Database Develop

[Q] Maximizing battery life as much as possible?

Before anyone accuse me of it, I did, in fact, look through the other battery threads on this forum (and other forums, for that matter), and I've already applied numerous tricks. I managed to get my phone to last roughly 9 hours from my typical usage, which now makes it comparable to other phones I've used in the past.
However, in about a day or two, I'm going to be getting a bluetooth headset...which basically means that I'm going to need to keep the Captivate's bluetooth on 24/7 (or, at least, most of the day). I really don't know how much battery this is going to cost me on the Captivate, so I'm trying my best to make things better now to make things smooth in the future. However, I appear to be at the end of my rope.
I have pretty much gimped the Captivate as much as one could reasonably take (more, I'd dare argue). I cut all of my volume down to half of what it was and I removed most of the quick icons. I also set a completely black wallpaper, I turned off all animation, and I turned the brightness down to its lowest setting.
I honestly don't know how to make it any worse. The SAMOLED screen is basically a meaningless PR term to me now and I'm actually missing phone calls from sheer lacking of hearing my phone ring...despite it being right in my pocket.
Going even further, I also attempted to switch to ADW.Launcher based upon recommendations by others that it increases battery life (I found that it had little to no effect). I also attempted to severely underclock my CPU (down to 200Mhz) based, again, upon other claims that it increases their battery life all the way to as high as 30+ hours on a single full charge.
Somehow, underclocking my CPU actually made the battery die out faster.
Furthermore, I attempted to use programs (SMODA, 2G/3G) which claim they allow me to switch to EDGE because, for some God-forsaken reason, Android doesn’t seem to have any toggle for doing it. Unfortunately, none of them seem to work; rather than switching to 2G, they all just completely disabled data, which, unfortunately, is completely unacceptable to me. So at this point, I only seem to have a few more extreme (from my perspective) options. Once I actually get the bluetooth, I plan to turn off most of the auto-updating apps (email, weather, twitter, etc), and just update them myself periodically. Furthermore, I plan to turn off the GPS location feature once I get my GPS unit.
Beyond the above, though, as I said, I'm at the end of my rope. Once I employ the other tricks, I figure I might be able to stretch battery life to 9.5-10 hours, but I would like to go even further. If anyone could offer me some help, I would highly appreciate it.

if your gonna have a bluetooth headset on disable your ringtone completly that would be meaning less. if your near wi-fi a lot have it connect only though that.
also you can clock the cpu down to 100Mhz along with the GPU.
AND to force 2G/edge read my howto in general
oh the ext2 lagfix can also save you some battery life

xatrekak said:
if your gonna have a bluetooth headset on disable your ringtone completly that would be meaning less. if your near wi-fi a lot have it connect only though that.
also you can clock the cpu down to 100Mhz along with the GPU.
AND to force 2G/edge read my howto in general
oh the ext2 lagfix can also save you some battery life
Click to expand...
Click to collapse
I'm already doing the first sans disabling ringtone. I'm not so sure doing such a thing would be acceptable to me.
As for the underlocking suggestion, as I said, I underclocked the CPU all the way down to 200Mhz and the battery actually drained even faster. I doubt underclocking even further is going to help. Furthermore, I actually did try 100Mhz originally, but the performance was so horrendous that it was unbearable.
As for the lag fix, I already have it. Lastly, I knew about that 4636 technique to switch to 2G already, but, unfortunately, it doesn't appear to work for me. The setting doesn't save and 3G still remains.
EDIT: I actually found a way to make the above work. Simply dial *#*#197328640#*#*, then go Debug Screen > Phone Control > UE State Control > Change RAT to GSM. This will actually force your phone to use GSM only. This seems like the answer to all of my battery problems....except it doesn't work. Once you make the change, the INFO menu reports that it has been changed to 'GSM Only', but data appears to have been disabled. Restarting your phone makes data works again, but the INFO menu reported that data has been reset back to 'GSM/CDMA auto'. Yay.

If you haven't already, turn off GPS when you aren't using it. Use the Power Control widget to help. Make sure all of the things in the power control widget are off unless you are using it. And use advanced task killer if you haven't already.

i say screw underclocking let run at whatever i dont think it makes a difference.
forget advanced task killer, i like auto killer.
leave gps off unless needed, and backround data
switch to 2g when you can.
no live walls of course use dark or black, no updating widgets
i dumped stuff like juice defender, cause with backround data off i dont think it does anything.
flight mode it at night (when sleeping) if not charging
ive been running jh3 (now jh7) with sre. get to work (i run 2g at work)at 9am listen to pandora all day through bluetooth (which is on for 6-8hrs) and wifi (6-8hrs) good amount off browsing bout 30 min of voice calls, some texts email checking, more browsing, some games. on average lately after being unplugged for 13-17 hrs at the end of the day with 20-30% life left,using bout 3hrs of display, 30 min voice calls, bluetooth doesnt use crap bout 3%, media server usually 15%, cell satndby i wanna say 10%, im pretty happy i guess, even though im always lookin for better results, tryin the new sre with undervolting, heard some good things.
still when that seidio 3200 mah battery comes out im gettin it, dont care how fat it makes the phone, things to dang thin as it is, and without some sort of cover its like a wet bar of soap!!

What is your typical daily usage? I have fairly light usage (few games here and there a little music and a good amount of web surfing, app browsing and texting with a few phone calls using speaker phone) and I'm at 28 hours of use with 55% battery.
I have just the typical power saving tricks(gps off, bluetooth off, screen at minimum or 30% and my data doesn't sync automatically), no under clocking or anything. I should point out I'm running a euro galaxy rom and am not ever on a wifi connection.

NotAppropriate said:
What is your typical daily usage? I have fairly light usage (few games here and there a little music and a good amount of web surfing, app browsing and texting with a few phone calls using speaker phone) and I'm at 28 hours of use with 55% battery.
I have just the typical power saving tricks(gps off, bluetooth off, screen at minimum or 30% and my data doesn't sync automatically), no under clocking or anything. I should point out I'm running a euro galaxy rom and am not ever on a wifi connection.
Click to expand...
Click to collapse
Wow you are lucky. Yesterday I got 2 phone calls for a total of 3 minutes. I sent 7 text messages. I surfed the web maybe for 15 minutes. No games. Nothing else major. GPS off. Bluetooth off. Wifi on. Screen at 22%. Only background data I have is email which checks once every hour and a weather widget that refreshes every 6 hours. I got barely 12 hours in before my battery died.

fishgator said:
If you haven't already, turn off GPS when you aren't using it. Use the Power Control widget to help. Make sure all of the things in the power control widget are off unless you are using it. And use advanced task killer if you haven't already.
Click to expand...
Click to collapse
Yes, I'm keeping GPS off, and I'm using ATK already.
NotAppropriate said:
What is your typical daily usage? I have fairly light usage (few games here and there a little music and a good amount of web surfing, app browsing and texting with a few phone calls using speaker phone) and I'm at 28 hours of use with 55% battery.
I have just the typical power saving tricks(gps off, bluetooth off, screen at minimum or 30% and my data doesn't sync automatically), no under clocking or anything. I should point out I'm running a euro galaxy rom and am not ever on a wifi connection.
Click to expand...
Click to collapse
Typical usage for me runs along this line: A lot of web browsing, perhaps 30-45 minutes of music, and plenty of IM. I also use Aldiko to read now and then. Calls do factor into this, but typically only two or three 10-15 minute phone calls.
Truthfully, I simply don't see how it is possible for you to use the phone for 28 hours straight and still have 55% battery. I could lose 30% battery just by leaving my Captivate on stand-by for 30 hours.

I certainly understand the interest in having the best battery life possible.
Are you in a work environment where you cannot plug it to a computer for part of the day?
Fortunately, I am. And I always have it plugged in in the car.
I don't want to have a powerful phone with all the features turned off in order to keep it going.

I dont see how you can get 28hrs @ 55% either, with the kind of usage he was claiming, i wouldnt exactly call that light usage
Sent from my SAMSUNG-SGH-I897 using XDA App

28hrs @ 55% What firmware you runnin
Sent from my SAMSUNG-SGH-I897 using XDA App

ewingr said:
I certainly understand the interest in having the best battery life possible.
Are you in a work environment where you cannot plug it to a computer for part of the day?
Fortunately, I am. And I always have it plugged in in the car.
I don't what to have a powerful phone with all the features turned off in order to keep it going.
Click to expand...
Click to collapse
Well, I do have a work environment where I can keep my Captivate plugged in, but only half of the time. Other times, I need to move. Aside from that, it kind of annoys me to use a phone attached to a wall socket. I prefer to keep my smartphones plugged in only long enough for them to fully charge (or at least charge to 80+%), then unplug them for usage. This is kind of tough for the Captivate considering it takes 3-4 hours to fully charge.
I also fully agree with you on the last point, which is what makes all of this so frustrating.
*Sigh* It's really too bad the Captivate is my first Android phone; it's been kind of a negative experience for me so far. Ironically enough, the one issue that hasn't been a problem for me is the one issue most seem to be having -- GPS performance.

roadrash7 said:
I dont see how you can get 28hrs @ 55% either, with the kind of usage he was claiming, i wouldnt exactly call that light usage
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
I am in class for most of the day so the phone is idle most of the time but i only play about 10 minutes of music with about an hour or 2 combined web surfing and games but my phone is still chugging at 39 percent battery life at 38 hours of usage. I guess that qualifies as light usage then.
edit: jm6 with unhelpful kernel and sre
also, you have let the battery die out completely and recharge completely with the phone powered off correct?

NotAppropriate said:
I am in class for most of the day so the phone is idle most of the time but i only play about 10 minutes of music with about an hour or 2 combined web surfing and games but my phone is still chugging at 39 percent battery life at 38 hours of usage. I guess that qualifies as light usage then.
edit: jm6 with unhelpful kernel and sre
also, you have let the battery die out completely and recharge completely with the phone powered off correct?
Click to expand...
Click to collapse
I'm honestly shocked at your usage. Am I reading right that in the 38 hours since you last charged it, you only used it for 10 minutes of music and a combined 1-2 hours of web surfing/games? I wouldn't call that light usage. I would call that hardly any usage.
Under such conditions, I can see why your battery life lasts so long.

I don't see why you can't get a days worth of usage out of your phone. Cell phone calls use the most battery - that is why the phone is rated at about 5 hours of talk time. This would be in the best signal area. If you are in a lower signal environment (especially in a heavy building all day) you will see faster battery drain.
I am not sure why you are bothering with BT if you are only talking on 2 or 3 calls - but if you take 3 15 minute calls that is at least 15% of your battery - the only way to change this is force the phone to Edge.
I would not lower ringtone volume - that is not a big battery saver in the grand scheme of things and you are missing calls - not a good trade off. If you are doing a lot of web surfing, go WiFi instead and you will see big battery imrovements. 3G voice and data suck battery - it doesn't matter if you have android or iPhone.
If you put your phone in Airplane mode you can go for 5 days between charges with minimum use.

The radio does kill the battery, I don't think the battery usage screen really depicts this. Since I've gotten my captivate my old BB Bold (at the time would only last 3 hours due to its degraded battery) lasts days on end with its radio disabled while sitting in my desk. I'd love to see native 3G toggle or at least a captivate catered app, I'd even pay for the latter
Sent from my SAMSUNG-SGH-I897 using XDA App

alphadog00 said:
I don't see why you can't get a days worth of usage out of your phone. Cell phone calls use the most battery - that is why the phone is rated at about 5 hours of talk time. This would be in the best signal area. If you are in a lower signal environment (especially in a heavy building all day) you will see faster battery drain.
Click to expand...
Click to collapse
Well, that rating is probably the battery life if your decide to talk on your phone for five hours straight. I really, really doubt it takes into consideration the in-between times (games, apps, and, of course, web surfing). Phone calls undoubtedly takes the most amount of battery, but Internet usage is probably second place and, as said, I use that fairly often.
Lastly, I'm not planning to use my bluetooth exclusively for phone calls. I'm going to use it for calls, listen to music on the Captivate, chat on my PC, and so on. It's multi-usage.
Next, you're missing a lot of the things I said. As I said, I already tried numerous methods to force the phone into 2G; not one of them works (they either don't work at all or actually completely disable my data). I'm already using wifi as opposed to 3G as much as possible.
Lastly, I'm sorry, but using airplane mode to save battery is not acceptable. If I'm even willing to consider this, then I might as well just turn off the Captivate to save battery.

I just read something about an external sd card being another battery drain.
Took mine out and we will see. I was already getting through the day with about 20%left.

8525Smart said:
Well, that rating is probably the battery life if your decide to talk on your phone for five hours straight. I really, really doubt it takes into consideration the in-between times (games, apps, and, of course, web surfing). Phone calls undoubtedly takes the most amount of battery, but Internet usage is probably second place and, as said, I use that fairly often.
Lastly, I'm not planning to use my bluetooth exclusively for phone calls. I'm going to use it for calls, listen to music on the Captivate, chat on my PC, and so on. It's multi-usage.
Next, you're missing a lot of the things I said. As I said, I already tried numerous methods to force the phone into 2G; not one of them works (they either don't work at all or actually completely disable my data). I'm already using wifi as opposed to 3G as much as possible.
Lastly, I'm sorry, but using airplane mode to save battery is not acceptable. If I'm even willing to consider this, then I might as well just turn off the Captivate to save battery.
Click to expand...
Click to collapse
I didn't meant to suggest that airplane mode was an alternative, just to point out that the cell radio for Voice and Data is your biggest drain.
If you are going to use the phone for almost an hour of talk time, heavy web surfing and BT connections for tethering then your battery life will be limited. If you are using BT to chat on your pc - then maybe tethering with USB would be better - you could charge at the same time.
Your other option is to get a spare battery.
And I did read what you had to say, I just didn't realize how much you were expecting your phone to do. The only numbers your provider were around talk time.
I use my phone a lot and I charge it every 24 hours - I am more then satisfied - but I know that if a spend an hour or more talking on it and bunch of web surfing that I will have to think about charging it as my usage increases.

There is a way to force the phone into 2G. It isn't very user friendly. I have tested this and it works great.
Enter the Phone app.
Dial *#*#197328640#*#*
Select [1] DEBUG SCREEN
Select [8] PHONE CONTROL
Select [4] UE STATE CONTROL
If you want 2G, select:
[3] CHANGE RAT TO GSM
If you want 3G, select:
[2] CHANGE RAT TO WCDMA

[Q] T-Mobile Note 4 Battery Drain

Hello All,
I have been noticing battery drainage issues on my Note 4, ever since I got the device. I have had it for a week (I got it on 10-28-14 right from T-Mobile but I didn't fully set it up until the 29th, and today's the 5th) and thought maybe after a few discharges and recharges, I would notice improvement. Coming from a Verizon LG G2, I have been used to starting my day at 8:00AM with 100% and coming home by 6:00PM with 30-40%, without having to employ any Battery Saving features or tricks. Obviously on days where I used my phone more, it will go under 20% and I would turn on battery saving mode, turn off any unnecessary wireless network signals, etc. I have been trying to keep patient because this phone is a spec powerhouse and I know theres just something running wrong in the background, but when I look at Battery usage, 9/10 times, Android system is using up ~40% of my battery, while screen is ~20%.
Has ANYONE had similar issues, or have any ideas on how to fix it?
Notes (no pun intended):
-I have the latest software update, the one that fixed battery life.
-I am running completely stock android, albeit with Nova launcher over touchwiz (all my apps downloaded from Play Store, no root)
- I do have "Ok, google" enabled and always listening
-I have turned off all animations in Developer Options (to counter some of that touchwiz lag)
-I use signals like bluetooth, nfc & gps RARELY, they are usually never on.
-Synch is usually on, because I want my notifications, but I have even turned this and Data off to try to save battery, but even on just Cellular or Wi-Fi, battery drains quick.
-Screen Brightness is on auto, but if I watch a youtube video, I usually turn it up to full.
-I haven't wanted to use power saving just because I shouldn't HAVE to in order to get through my day if I barely turn my phone on.
-Battery drain ranges from 5-15% per hour on mostly standby, the most screen on-time I have gotten thus far is under 2 hrs.

If you want amazing battery life (I'm talking truly 50% more), root your phone and flash FireKatv3 ROM. It's no joke. Dead serious. The battery life is insane, let alone a faster, smoother, lighter, cooler (temp.) phone...whatever you do, don't stay stock. It doesn't do the n4 any justice.
Let me know if you have any other questions. I'd be glad to help.

I've attached a few Screenshots of how today went, barely any usage, yet I drained so much during standby.

iunlock said:
If you want amazing battery life (I'm talking truly 50% more), root your phone and flash FireKatv3 ROM. It's no joke. Dead serious. The battery life is insane, let alone a faster, smoother, lighter, cooler (temp.) phone...whatever you do, don't stay stock. It doesn't do the n4 any justice.
Let me know if you have any other questions. I'd be glad to help.
Click to expand...
Click to collapse
Thanks, but for now i wanna keep my warranty and use the S-pen for at least a few months.

Is battery drain possible due to hardware damage?

So over the course of time I have used many different ROMs and also have had 5 batteries for my Note so far.
All ROMs gave me terrible battery life, except the stock android for around the first year, eventually it started giving me terrible battery life too.
So that got me wondering, is it possible that some kind of faulty hardware on my Note's motherboard is causing those battery drains?

[email protected] said:
So over the course of time I have used many different ROMs and also have had 5 batteries for my Note so far.
All ROMs gave me terrible battery life, except the stock android for around the first year, eventually it started giving me terrible battery life too.
So that got me wondering, is it possible that some kind of faulty hardware on my Note's motherboard is causing those battery drains?
Click to expand...
Click to collapse
I'm pretty sure that would be possible, but I'd make sure to rule out any other cause you can rule out first.
First thing to do is check on who or what is consuming the battery, so installing something like CPU Spy will let you know if the phone just keeps running at top speeds.
Because there simply isn't enough juice in these batteries to allow all parts of the phone to run full throttle for hours.
Smart phones are really at their best, when their just sitting idle and then they really shouldn't consume any power. That's what you need to check: Does it really slow down and sleep, when you're not actively using it?
And CPU Spy (or similar tools) will give you that info by telling you how much time the CPU has spent at each speed setting. If it doesn't drop to deep sleep when the phone if off the charger, screen switched off at the home screen but stays running at 100-500MHz, then you have found the reason for the miserable battery life. Now you'd just have to find what's causing it.
And that could be a long story journey...
However you could start with an empty ROM fully wiped, nothing but the ROM and the minimum set of GAPPS installed (and CPU Spy or similar for checking) empty internal SDcard, expecially no media files. If you have an external SD card, best remove that initially so you don't have to delete any data you keep on there.
If then the Note isn't guzzling battery and sleeping deeply when not used, your hardware is fine.
Then it's just a matter of adding item after item, always checking of that is causing any change to CPU states and energy consumption.
You should also try to find out of any of your five batteries has issues and use a known good one for the testing.

abufrejoval said:
I'm pretty sure that would be possible, but I'd make sure to rule out any other cause you can rule out first.
First thing to do is check on who or what is consuming the battery, so installing something like CPU Spy will let you know if the phone just keeps running at top speeds.
Because there simply isn't enough juice in these batteries to allow all parts of the phone to run full throttle for hours.
Smart phones are really at their best, when their just sitting idle and then they really shouldn't consume any power. That's what you need to check: Does it really slow down and sleep, when you're not actively using it?
And CPU Spy (or similar tools) will give you that info by telling you how much time the CPU has spent at each speed setting. If it doesn't drop to deep sleep when the phone if off the charger, screen switched off at the home screen but stays running at 100-500MHz, then you have found the reason for the miserable battery life. Now you'd just have to find what's causing it.
And that could be a long story journey...
However you could start with an empty ROM fully wiped, nothing but the ROM and the minimum set of GAPPS installed (and CPU Spy or similar for checking) empty internal SDcard, expecially no media files. If you have an external SD card, best remove that initially so you don't have to delete any data you keep on there.
If then the Note isn't guzzling battery and sleeping deeply when not used, your hardware is fine.
Then it's just a matter of adding item after item, always checking of that is causing any change to CPU states and energy consumption.
You should also try to find out of any of your five batteries has issues and use a known good one for the testing.
Click to expand...
Click to collapse
Okay to begin, the phone never drains battery when idle, never. If I charge to 100% at night around 23:00 , in the morning it would be around 90%. So that seems fair enough. Because I keep my EDGE / 2G activated at all times.
The real problem is when the screen is turned on (doesn't matter what I do).
I tried to keep the screen on for one hour, idle, doing nothing. Battery drained by a whooping 25%. So basically it's my screen which is consuming my battery. I didn't try this when I made this thread, so there's no mention of this in the first post.
So I don't think any other apps are consuming anything. Besides I hardly have any apps installed.
I got the gapps from the following link and installed the 'mini' package.
http://forum.xda-developers.com/par...apps-official-to-date-pa-google-apps-t2943900
Apart from I only have WhatsApp, Notepad, Perfect AppLock, AdAway and Chrome installed. Only a few apps since I did a full wipe yesterday night. Even flashed a stock ROM first and began from scratch.
So I don't really think it's any apps consuming any CPU, only screen is eating a ****load. Could it be the damaged screen?
Holy ****! I just recalled while writing this post, I did get this screen of this phone replace once, like one and half year ago. Could that be it? I did get it replaced from a official Samsung store though.

[email protected] said:
Okay to begin, the phone never drains battery when idle, never. If I charge to 100% at night around 23:00 , in the morning it would be around 90%. So that seems fair enough. Because I keep my EDGE / 2G activated at all times.
The real problem is when the screen is turned on (doesn't matter what I do).
I tried to keep the screen on for one hour, idle, doing nothing. Battery drained by a whooping 25%. So basically it's my screen which is consuming my battery. I didn't try this when I made this thread, so there's no mention of this in the first post.
So I don't think any other apps are consuming anything. Besides I hardly have any apps installed.
I got the gapps from the following link and installed the 'mini' package.
http://forum.xda-developers.com/par...apps-official-to-date-pa-google-apps-t2943900
Apart from I only have WhatsApp, Notepad, Perfect AppLock, AdAway and Chrome installed. Only a few apps since I did a full wipe yesterday night. Even flashed a stock ROM first and began from scratch.
So I don't really think it's any apps consuming any CPU, only screen is eating a ****load. Could it be the damaged screen?
Holy ****! I just recalled while writing this post, I did get this screen of this phone replace once, like one and half year ago. Could that be it? I did get it replaced from a official Samsung store though.
Click to expand...
Click to collapse
I'd consider playing with the brightness, just to see of something a little lower is good enough for daily use but I'd say that isn't impossible...
While Samsung liked to hype the fact that OLED would only use power on illuminated pixels, mine are mostly white because reading is what I do most on my Notes.
And then this screen on the Note 1 didn't use particularly less energy than a good LCD backlight screen according to the reviews I remember.
I also remember an article which said that the energy consumption on OLED wasn't linear and that the last 20% of brightness might cost 50% more power (the numbers are most likely bogus but the main point was that brightness/energy consumption wasn't linear).
And yes, there is most likely variation between individual screens on OLED and moreover OLED displays decay with use and over time. I haven't noticed it that much with my Note 1 yet, but my older Samsung Galaxy S I-9000 that I passed on to one of my sons developed a brightness issue: Everything below the first 100 lines or so is significantly darker than the top. I don't know wether that's a consequence of his usage pattern (Whatsapp) or some other reason, but I do know that he typically kept the display at top brightness and also kept it lit far longer than I ever did.
I've always been somewhat disappointed by the endurance of the Note 1 but I haven't really noticed any significant change with the different ROM versions. And since I was also somewhat disappointed by the performance of the device I couldn't resist replacing it with the Note 3 when that came out.
That device was better in pretty much every regard, except screen ratio: I really, really liked the 16:10 of the Note 1 a lot better than the 16:9 of the Note 3.

abufrejoval said:
I'd consider playing with the brightness, just to see of something a little lower is good enough for daily use but I'd say that isn't impossible...
While Samsung liked to hype the fact that OLED would only use power on illuminated pixels, mine are mostly white because reading is what I do most on my Notes.
And then this screen on the Note 1 didn't use particularly less energy than a good LCD backlight screen according to the reviews I remember.
I also remember an article which said that the energy consumption on OLED wasn't linear and that the last 20% of brightness might cost 50% more power (the numbers are most likely bogus but the main point was that brightness/energy consumption wasn't linear).
And yes, there is most likely variation between individual screens on OLED and moreover OLED displays decay with use and over time. I haven't noticed it that much with my Note 1 yet, but my older Samsung Galaxy S I-9000 that I passed on to one of my sons developed a brightness issue: Everything below the first 100 lines or so is significantly darker than the top. I don't know wether that's a consequence of his usage pattern (Whatsapp) or some other reason, but I do know that he typically kept the display at top brightness and also kept it lit far longer than I ever did.
I've always been somewhat disappointed by the endurance of the Note 1 but I haven't really noticed any significant change with the different ROM versions. And since I was also somewhat disappointed by the performance of the device I couldn't resist replacing it with the Note 3 when that came out.
That device was better in pretty much every regard, except screen ratio: I really, really liked the 16:10 of the Note 1 a lot better than the 16:9 of the Note 3.
Click to expand...
Click to collapse
I see. Thank you for the time you took to write this reply.
I always have my brightness to the lowest possible and yet I am facing battery drains.
Anyways, it seems this problem is beyond repair. I have literally tried every solution possible and nothing seems to have worked. So I guess it's time to move on.
Thank you for your time and information.
It's probably my screen that's consuming the battery. It can easily last up to 20 hours with 2G turned on the entire day. But as soon as I turn the screen on and start doing something, battery drains at like 1% every 60 seconds.

How old is your battery?.. I´d say get a new one if it´s older than 1 year..

Looking for extreme battery saving, root, and great camera+GPS. Hiking 1023 miles

I generally knows how to flash stuff, use xposed, and whatnot. But I've never really done anything unified to focus on extreme battery saving. I am hoping to be able to switch profiles or something like that so I can keep the phone running on the lowest power possible but still be available for me to wake up to higher power for camera, gps, and messaging uses. The reason for this use case is because I will be hiking half of the Appalachian Trail this summer from Harper Ferry, WVA to Springer Mountain, GA, a total of roughly 1023 miles. Being able to stretch my battery as much as possible without actually enabling airplane mode or turning it off would be extremely helpful. I'm deaf so I cannot just simply borrow anybody else phone to call family. So I must be able to use my current phone for many different functions, including communication.
I do want to be able to use my phone as a primarily social media and messaging device. I have a wordpress blog that I'm trying to get in the habit of updating more often. I also have Instagram, Facebook, and the like. I will be bringing a pocket camera with me but I still want to be able to use my phone to snap pics for easy sharing to Instagram (it will autopost to both Facebook and Wordpress). One of my concern about the camera app is because I know that some ROMs have had issues with the camera's performance after a little while. Being on the trail for about 2 and half month, I won't have any opportunity to fix up my phone. Hence why I want to start testing thing out right now and have about a month or two to go before the actual hike.
GPS is obviously going to be vital. I have a guidebook with me that should covers everything and I almost never ever lose my cardinal direction so I'm not too worried about getting lost. But some GPS access could help just in case I need to figure out exactly how far I've missed a turn or how much I have left to go for the day. Plus it would be nice to have in case of emergency.
I do need bluetooth though. I have a Pebble watch that would be useful for me on the trail, I think. And I will be using a folding bluetooth keyboard on the trail too.
I remember once having Cyanogenmod on an old phone of mine with the ability to extremely underclock. It was incredibly laggy but I was able to create a shortcut to the clocking page so I could switch to a higher speed as I needed it. I'm hoping to be able to do the same with my Verizon's Nexus 6.
Anyway, I'm hoping for any input on which ROM, kernel, etc... would be recommended for setting up the absolute best battery saving and be able to switch the functionality high or low as I needs it. Thanks for any input.

Deafcyclist said:
... to focus on extreme battery saving. ...
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I know that this doesn't exactly answer the question you asked. And I've only owned my N6 since September, and despite flashing everything under the sun with my older devices, I have yet to leave stock on the 6.
That said, are you considering auxiliary batteries (some will give you about 3-4 full charges and are the size of a deck of cards) and possibly solar arrays to top them off? I would consider hanging one from the top of my pack during the day and taking my rests near clearings for direct sunlight. And if you're really looking to stretch your battery, but don't want to run in flight mode, I would consider leaving the BT devices home and maintaining a 2g connection while hiking, only switching to higher power radios when you need to upload images. Remember, in fringe areas, the higher power radios are going to use exponentially more power than when they have a solid signal. And the 2g radio has better reception in fringe areas, besides. Personally, I would use flight mode while sleeping.
One other thing about the radio: this may sound like snake oil, but it is my understanding that the radio's reception can be stronger when closer to the ground based on how the radio waves travel. (It may have been a placebo, but I'm certain I have seen benefit from this on occasion).
I would also make sure that things like NFC, ambient display, screen rotation, adaptive brightness, sync, notifications and vibration are turned off (Being deaf, I suppose that no vibration may not be possible). I would also uninstall (or disable) any and all apps that are not absolutely necessary for the trip. I would also uninstall the Facebook app, if you are using it. If you prefer an app experience for it, I would recommend the Metal app in it's place. No matter what rom you install, you should go for optimizing the power usage.
As for the camera, I would stay away from the AHDR modes and stick to single frame (huge battery saving there!)
I would set a completely black lock screen and home screen wallpaper, too.
I would also suggest an automation app for managing your power usage. Most allow you to have predefined groups of settings that you can assign home screen shortcuts or a quick settings tile. I recommend Automate by Llama Labs.
Good luck! And I hope you have a fantastic trip!

So far that I know of, is that the CPU and GPU speed and governors affect how much the battery is used (#2 heavy power consumer behind the active-matrix organic LED screen with light background) - the faster they run, the more power they require to do certain tasks. I have since set my Nexus 6 phone's processor at 200 - 300 MHz to 1 GHz across entire quad cores (with AutoSMP hotplug and ondemand governors) and GPU locked to 300 MHz maximum, and that configuration have been saving me a lot of power (and quite noticeable with the new battery I installed last week). The ROM I am using is crDroid (Android 7.1.1 Nougat), if you're wondering.
As for GPS, it depends. It may just sip or hog the power. Vibration? It depends on vibration strength (which can be adjusted with Kernel Adiutor Mod app), the stronger it is, the more current it require. Long story short, experimentation is necessary. I also recommend to use black theme under Substratum, it will also ease current consumption by the screen, which I have been doing also (Swift Black Substratum theme pack is what I'm using, perfect amount of blackness to save a good amount of power, and can be found in Google Play Store).

I second cameraddict's suggestion of a power pack. I have the 3000mah version of this, and it works very well.
https://www.amazon.com/PowerCore-Po...&qid=1490282378&sr=8-4&keywords=anker+battery
There are others with higher capacity, but this one would more than double your N6's capacity, and it's the size of a small cigar.

cameraddict said:
I know that this doesn't exactly answer the question you asked. And I've only owned my N6 since September, and despite flashing everything under the sun with my older devices, I have yet to leave stock on the 6.
That said, are you considering auxiliary batteries (some will give you about 3-4 full charges and are the size of a deck of cards) and possibly solar arrays to top them off? I would consider hanging one from the top of my pack during the day and taking my rests near clearings for direct sunlight. And if you're really looking to stretch your battery, but don't want to run in flight mode, I would consider leaving the BT devices home and maintaining a 2g connection while hiking, only switching to higher power radios when you need to upload images. Remember, in fringe areas, the higher power radios are going to use exponentially more power than when they have a solid signal. And the 2g radio has better reception in fringe areas, besides. Personally, I would use flight mode while sleeping.
One other thing about the radio: this may sound like snake oil, but it is my understanding that the radio's reception can be stronger when closer to the ground based on how the radio waves travel. (It may have been a placebo, but I'm certain I have seen benefit from this on occasion).
I would also make sure that things like NFC, ambient display, screen rotation, adaptive brightness, sync, notifications and vibration are turned off (Being deaf, I suppose that no vibration may not be possible). I would also uninstall (or disable) any and all apps that are not absolutely necessary for the trip. I would also uninstall the Facebook app, if you are using it. If you prefer an app experience for it, I would recommend the Metal app in it's place. No matter what rom you install, you should go for optimizing the power usage.
As for the camera, I would stay away from the AHDR modes and stick to single frame (huge battery saving there!)
I would set a completely black lock screen and home screen wallpaper, too.
I would also suggest an automation app for managing your power usage. Most allow you to have predefined groups of settings that you can assign home screen shortcuts or a quick settings tile. I recommend Automate by Llama Labs.
Good luck! And I hope you have a fantastic trip!
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Click to collapse
Thanks for all of the ideas. I already have a 10,000mah external battery that I will be using..Unfortunately solar panel are not very feasible on the trail, there is a reason why it is sometimes called a green tunnel.
I'll be removing virtually everything unneccesary from the phone. I do use Facebook a lot but I'm planning on using titanium backup to freeze the app (plus other apps) when I'm not using it so it should not be a problem there.
Good idea about limiting to 3g when I'm on the trail. There, I only need minimal data for emergency messaging and basic GPS sharing.
I do have a pebble smartwatch and I'm thinking that maybe using it would offload the battery usage from the phone to my watch allowing me to still have some notification and other details on the watchface.
Dr. Mario said:
So far that I know of, is that the CPU and GPU speed and governors affect how much the battery is used (#2 heavy power consumer behind the active-matrix organic LED screen with light background) - the faster they run, the more power they require to do certain tasks. I have since set my Nexus 6 phone's processor at 200 - 300 MHz to 1 GHz across entire quad cores (with AutoSMP hotplug and ondemand governors) and GPU locked to 300 MHz maximum, and that configuration have been saving me a lot of power (and quite noticeable with the new battery I installed last week). The ROM I am using is crDroid (Android 7.1.1 Nougat), if you're wondering.
As for GPS, it depends. It may just sip or hog the power. Vibration? It depends on vibration strength (which can be adjusted with Kernel Adiutor Mod app), the stronger it is, the more current it require. Long story short, experimentation is necessary. I also recommend to use black theme under Substratum, it will also ease current consumption by the screen, which I have been doing also (Swift Black Substratum theme pack is what I'm using, perfect amount of blackness to save a good amount of power, and can be found in Google Play Store).
Click to expand...
Click to collapse
Yeah, that's why I'm asking about it at this point. I feels that 2 months are long enough for me to experiment with this. I'm hoping to do the trick with governers so I'll be reviewing your comment after work today.
dahawthorne said:
I second cameraddict's suggestion of a power pack. I have the 3000mah version of this, and it works very well.
https://www.amazon.com/PowerCore-Po...&qid=1490282378&sr=8-4&keywords=anker+battery
There are others with higher capacity, but this one would more than double your N6's capacity, and it's the size of a small cigar.
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Click to collapse
Yeah, I have a 10,000 mAh battery, heh.

I'd go back to Marshamallow and not Nougat for battery savings. Also "Pixel Off" app to reduce brightness and turns off 1/2 pixels to save battery. You can also use Black and White mode in Developer Option to save battery. Kernel Audiutor can underclock to 1190 Mhz top and 300 Mhz bottom with "conservative" governor and "powersaving" mode.

HueyT said:
I'd go back to Marshamallow and not Nougat for battery savings.
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I disagree, because I haven't seen a difference between Marshmallow and Nougat regarding battery saving (even though stock Nougat ROM blows - all the reason to install custom LineageOS derivative ROM instead) - I know because I checked with new battery installed and I am still at 56% battery remaining ever since 5 days after charging to 100%, on the Nougat ROM with aggressive economy CPU settings I tailored on my phone, however, as for 1/2 "Pixel off" and black - white video option to save a bit juice, I agree even though it will make the UI quite ugly.

Dr. Mario said:
I disagree, because I haven't seen a difference between Marshmallow and Nougat regarding battery saving (even though stock Nougat ROM blows - all the reason to install custom LineageOS derivative ROM instead) - I know because I checked with new battery installed and I am still at 56% battery remaining ever since 5 days after charging to 100%, on the Nougat ROM with aggressive economy CPU settings I tailored on my phone, however, as for 1/2 "Pixel off" and black - white video option to save a bit juice, I agree even though it will make the UI quite ugly.
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https://www.reddit.com/r/GalaxyS7/comments/5ujoyj/nougat_battery_life_latest_btu_vs_marshmallow/
http://www.phonearena.com/news/Bad-...-Edge-after-Android-7.0-Nougat-update_id90859

I had another thought this morning. ( I realize that all my suggestions are minor, but lots of minor adds up.) I would also turn off all animations in Developer options.
I also wanted to agree about the monochrome color option in Developer options. And the dark theme, in general.
As for kernel settings, on other devices I've had, I had quite a bit of success with UV. If memory serves, once I had finished a weeks worth of experimenting, I gained about 10% from UV. And using the ondemand governor, with lots of tweaking, I was able to increase battery life without too big of a hit on usability. I found that powersave always created a very unpleasant experience.
edit:
One more thing, from my experimenting, you can also gain several % by changing how you interact with the device. Your governor will spike the CPU every time you touch the screen. One major difference you can make today is changing that behavior. When reading, scroll from the bottom all the way to the top of the screen and don't touch it again until you need to scroll all the way from the bottom. This isn't as hard or as silly as it sounds. Watch how you use your device, Many people touch the screen a lot

Despite every effort and tweak you can think of, you'll achieve only minimal battery life extension. Your best bet is to use the few tweaks that you feel are acceptable and rely on your 10000mah battery - nothing else will have anything like that effect.

dahawthorne said:
Despite every effort and tweak you can think of, you'll achieve only minimal battery life extension. Your best bet is to use the few tweaks that you feel are acceptable and rely on your 10000mah battery - nothing else will have anything like that effect.
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Click to collapse
Respectfully, I disagree. Each .5%-2% gain adds up. 10 tweaks at an average of .75% gain is 7.5% Add one major tweak that gives an average of 8% and you now have a 15.5% gain. My battery, right now, on official 7.0 (with no tweaks) averages 40 hours on battery with 6-8 hours of SOT. I have many other metrics for this... So 40 hours x 15.5% = total battery life of 46+ hours. Those 6 hours are not minimal effect. Especially when there is no outlet nearby for days.
It is possible with the right mix of OS tweaks, app settings and kernel tweaks to see an average gain in the 30-50% neighborhood.
This, by the way, comes from years of tweaking and experimenting on many devices. Going back to 2003 or so. You can check out my old posts on optimizing my old Galaxy S2, I shared a lot about that device.

No need for "respectfully" I'm sure it's really just a preference. A lot of tweaks may well add up to a respectable extension, but they will never triple it as a 10000mah battery will. I'd rather carry the extra few ounces and be sure that I have a reserve. Not arguing, just stating my preference.

dahawthorne said:
No need for "respectfully" I'm sure it's really just a preference. A lot of tweaks may well add up to a respectable extension, but they will never triple it as a 10000mah battery will. I'd rather carry the extra few ounces and be sure that I have a reserve. Not arguing, just stating my preference.
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Gotchya. I just mention all the tweaks AND the battery for his use case. As an initial full charge plus three extra charges(with the 10,000mah) without tweaks (conservatively) would net him a total of about 8 days of use. But with 20% savings from tweaks, that goes up to nearly 10 days. Quite a useful increase.
ps... I wrote: "respectfully" 'cause you know how forums can be. Sometimes I think it's best to be proactive and let the person your responding to know that you're not arguing. Cheers!

HOW are you guys getting more then 10/12 hours on this watch?

Granted, I'm only on day 4.. but still..
I've tried disabling LTE, simple watch-face, etc.. but can't get it to live for more then 12 hours without needing a recharge..
Do those of you reaching more then 12 hours use an always on screen? Gestures?
I did do a test overnight and it only dropped 20% (7 hours) - but my typical drop rate is much higher then that with casual use..
-mark
ps - I'm on-track for 12 hours again today, and that's with only having received ~3-4 email notifications which I just quickly dismissed in the past two hours so far..

For those that might be interested in this subject, I also posted it on reddit which seems to be getting much more traffic..
https://www.reddit.com/r/AndroidWea...ort_watch_how_are_you_guys_getting_more_then/
-mark

I just put mine on charge after 48 hrs with 3% left that is with screen always on off and only turning WiFi on when needed.I'm using mine tethered to my g6 without lte.

Firstly in my case I don't use LTE.
I've found having WiFi and gps switch on has made very little difference to battery life, as it's tethered anyway for this information.
I think the battery life has got better after a couple of weeks usage, and typically a full day has plenty left, nearly 50% on occasions.
Yesterday was a long day, and it managed 20 hours straight through

I usually get around 24 hours. But barely 24 hours (if I do anything except let my watch run idle on my wrist whole day, I don't hit the mark).
Screen always ON
NO SIM (doesn't even work in europe)
Always tethered to the phone
Tilt OFF
Gestures OFF
Location MIXED (decided to experiment a bit, seen no discernible difference in battery drain whether it was ON or OFF)
Watchface: Portions with 4 complications
First couple of hours is sleep tracking with screen turned off (but constant HRM sensor activity), which consumes slightly less than regular operation.
Today I turned always screen off and holy **** what a difference. After 12 hours I'm still at 80%. So the clear culprit of this is the screen. I think I will try to get used to this, it was wasting energy 99% of the time before anyway (I'm not looking it at it all the time).

I end up getting through the day at about 30 to 50% with everything on except for LTE which I toggle on and off during the rare occasions I need it. I usually use brightness 6 during the evening and 8 during the day, I find the auto-brightness too dim on every occasion. On the other hand I've had a few random days where it rapidly used it's battery and I was down to power saving in the afternoon. Havne't figured out what is happening when it occurs but when it happens my phone also rapidly drains. Other than that I wish I could increase the screen on time, it sometimes dims before I've done what I want to do and I feel like I have enough spare bat to burn a little more keeping it on longer.

My Answer, you don't. I leave everything on and charge it, like 3 times a day. I'm lucky because I have two others to swap to during charge, but I even bought a second charger for work when I do not have those available.
I simply do not want to reduce any features of the watch, so I charge it often. That's just what it is if you ask me, you're not going to miraculously get this thing working for 2 days, simple as that. So use it big, and charge it often!
$13.99 the name is: LG Watch Sport Charger, Kissmart Replacement Charger Charging Cradle Dock Adapter for LG Watch Sport Smart Watch

krabman said:
I end up getting through the day at about 30 to 50% with everything on except for LTE which I toggle on and off during the rare occasions I need it. I usually use brightness 6 during the evening and 8 during the day, I find the auto-brightness too dim on every occasion. On the other hand I've had a few random days where it rapidly used it's battery and I was down to power saving in the afternoon. Havne't figured out what is happening when it occurs but when it happens my phone also rapidly drains. Other than that I wish I could increase the screen on time, it sometimes dims before I've done what I want to do and I feel like I have enough spare bat to burn a little more keeping it on longer.
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Is there a faster way to toggle cellular on and off other than going into settings?
Sent from my Pixel XL using Tapatalk

Not that I know of and for me it's a double downer, when I use the watch standalone I don't need bluetooth. I menu dive to switch both and then revert when I'm done. The radios should be available from the pull down quick settings IMO, it would be enough to have an icon there to open them all and you could toggle those you need from there. Considering the wasted space on that pull down it becomes a bit of a what were they thinking issue...

Hi guys i'm interested about lg watch sport here in europe and i'm willing to buy from ebay korean model. My cuestion is can i use it completly without pairing to phone with sim inside. Can i set it up without cell phone? How about using facebook, viber ( making VOIP calls) email etc... thanks

Logon941 said:
Hi guys i'm interested about lg watch sport here in europe and i'm willing to buy from ebay korean model. My cuestion is can i use it completly without pairing to phone with sim inside. Can i set it up without cell phone? How about using facebook, viber ( making VOIP calls) email etc... thanks
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Click to collapse
You need to pair with phone initially. It also makes it easier to copy your accounts over to the watch. After you set it up, you don't need your phone anymore BUT if you keep it on cellular the watch isn't going to last.
Sent from my Pixel XL using Tapatalk

krabman said:
Not that I know of and for me it's a double downer, when I use the watch standalone I don't need bluetooth. I menu dive to switch both and then revert when I'm done. The radios should be available from the pull down quick settings IMO, it would be enough to have an icon there to open them all and you could toggle those you need from there. Considering the wasted space on that pull down it becomes a bit of a what were they thinking issue...
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Click to collapse
From my time with the watch it appears that having cellular on has little impact on battery life as long as you're within range of your phone. The part that does affect battery life with cellular on is IF you're in an area with just complete sucky cell signal to start off with. (IE my workplace) that will kill battery.
I had battery draining issues at work even with cellular off at work but I figured out that although on my phone when connected to work wifi I can get to the play store on my phone but on my watch it can't get to the playstore or communicate with google. My assumption is the watch is draining because the google play services can't connect/sync with google therefore causing it to stay awake and drain. Watch battery life has been much better when I disable wifi on my phone BUT now my phone drains a little faster because it's not on wifi.
Bluetooth Autoconnect app has been a lifesaver when having watch/phone/BT headset/BT car connected. You can set up profiles and priorities so that the car/headset/headphones take over the call duties so you can hear phone calls through those devices instead of the watch.
I'm still getting used to life having to sift through the menus to disable and enable radios but you're right. There needs to be an easier and faster way.