Database Develop

Pretty good battery life!

I'm seeing a lot of posts about poor battery life but am i the only one who's getting pretty damn good results?
I'm currently on 2days, 18hours, 31minutes and 41seconds on battery* and it's still on 31%. I reckon i can still probably get another 24 hours out of it.
Is anyone else getting similar results?
* Roughly: 5 phone calls, 20+ texts, 40+ minutes of youtube via HDMI out, 5 photo's (some with flash) and internet/market browsing here and there.
I'm running CM7 with vorkKernel (standard clock speed) with GPS turned off and WiFi on (when at home),

that kernal you are using. does it show accurate battery stats? I noticed cm7's battery is pretty erratic.
btw this is xthedarknight99 on twitter!

My battery life is great when I use JuiceDefender and when I don't use apps that use the mobile data connection the entire time.
My battery gets raped to hell and back when I have apps running that use mobile data, like MSN or IRC. I work 4-hour shifts and during a shift I usually leave MSN running using 2G data. In those 4 hours I lose around 40-50% of my battery, it's wicked.
One thing I've noticed is, when I enable Wi-fi and leave it enabled, battery drain overnight is around 8%. When I disable Wi-fi AND Mobile data and let JuiceDefender enable mobile data for a short time every 15 mins, my battery drain overnight is around 10%. If I leave mobile data enabled the entire time my battery loses 30% overnight.
Something is seriously wrong with the mobile data chip/driver.

hazard99 said:
that kernal you are using. does it show accurate battery stats? I noticed cm7's battery is pretty erratic.
btw this is xthedarknight99 on twitter!
Click to expand...
Click to collapse
Not sure. The battery stats may be off slightly but it's been well over 2 days since i last charged my phone
here's the screenshot i took a few hours ago.
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EDIT: Accidentally put 12 hours instead of 18 in the first post ><

Tr0gledyte said:
My battery life is great when I use JuiceDefender and when I don't use apps that use the mobile data connection the entire time.
My battery gets raped to hell and back when I have apps running that use mobile data, like MSN or IRC. I work 4-hour shifts and during a shift I usually leave MSN running using 2G data. In those 4 hours I lose around 40-50% of my battery, it's wicked.
One thing I've noticed is, when I enable Wi-fi and leave it enabled, battery drain overnight is around 8%. When I disable Wi-fi AND Mobile data and let JuiceDefender enable mobile data for a short time every 15 mins, my battery drain overnight is around 10%. If I leave mobile data enabled the entire time my battery loses 30% overnight.
Something is seriously wrong with the mobile data chip.
Click to expand...
Click to collapse
Yeah, Wifi uses a lot less power than 3G when it's connected but uses a hell of a lot of power if it's constantly scanning and can't connect. I always turn mine on when i get home and turn it off when i leave the house

Noticed the same thing too. But less acutely, as I don't use any apps that use data constantly, except for an hourly email check.
Similarly, wifi at home seems to have slower drain than 3G mode when I am outdoors (wifi switched off when outdoors). I don't use 2G mode.
Generally, I stay above 50% battery level after a whole day's use - so I can't complain too much.

Finally plugged my phone in lol
Not got a screenshot of it but the stats are: 3days, 6hours, 17minutes and 49seconds on battery. Not bad!

Mine did something "bad" like this too. 3d 5h... never imagined, after the problems it makes day to day...

You lucky bugger! Ive actually had time to test it in the wild(slightly) today and well its not good at all!
5hours 20minutes or something around that, phone actually drained 99% lol! In that time i did:
almost 2 hours of browsing web, forums like hexus/xda so nothing to heavy... no constant loads/refreshes
Played 10-15minutes of xconstructor (im so easily pleased!)
Had 2 gmail accounts of auto sync, push basically
made around 27minutes worth of phone calls
5 texts
Not much really to drain 100% battery . Any ideas on how to improve battery life?
edit: this is on modaco fr18b2

@meltus.... do you mind me asking whether you're on stock rom or what apps etc you have changed to get that. I'm getting a healthy 24 hours for the battery normally but wouldnt mind extending that!!

Did you try to recalibrate the bettery with batterycalibration app? For me it basically doubled the battery life!

i recalibrated the battery before installing a new rom (it was 100% battery) however ill try again .

Meltus do you have sync on?
Also do you use whatsapp?
Those are the #1 battery killers on my phone.
Specially whatsapp.

I can't understand how your battery can last so long, while mine last less than a day ...!!!

Meltus said:
I'm seeing a lot of posts about poor battery life but am i the only one who's getting pretty damn good results?
I'm currently on 2days, 18hours, 31minutes and 41seconds on battery* and it's still on 31%. I reckon i can still probably get another 24 hours out of it.
Is anyone else getting similar results?
* Roughly: 5 phone calls, 20+ texts, 40+ minutes of youtube via HDMI out, 5 photo's (some with flash) and internet/market browsing here and there.
I'm running CM7 with vorkKernel (standard clock speed) with GPS turned off and WiFi on (when at home),
Click to expand...
Click to collapse
That is impressive
May I know which nightly build are you on?
I've always been tempted to install them but i was too afraid of stability issues

that is indeed impressive. my battery gets merked by approximately 33% after 40 minutes of youtube lol

I have almost the same battery life on the latest CM kang, but with 2G only... With 3G I get little more than one day...

I think he's pulling our leg with that screenshot
No details of rom, baseband or ril combo etc.
-smc

hicks12 said:
You lucky bugger! Ive actually had time to test it in the wild(slightly) today and well its not good at all!
5hours 20minutes or something around that, phone actually drained 99% lol! In that time i did:
almost 2 hours of browsing web, forums like hexus/xda so nothing to heavy... no constant loads/refreshes
Played 10-15minutes of xconstructor (im so easily pleased!)
Had 2 gmail accounts of auto sync, push basically
made around 27minutes worth of phone calls
5 texts
Not much really to drain 100% battery . Any ideas on how to improve battery life?
edit: this is on modaco fr18b2
Click to expand...
Click to collapse
I lost 3 or 4% in one hour on standby with Modaco fr18b2. Now on CM7 kang I have still 100% after 8 hours on standby. Data-2G and Wi-Fi are turned on all the time.
Well settings are the same as with Modaco ROM.

I want to flash CM so bad but am waiting to see what the official gingerbread does.. I know that once I go to CM I won't go back lol my battery is horrible right now
Sent from my LG-P999

[Q] How to troubleshoot kernel wakelock problems?

Hi everyone,
I've been optimizing my battery drain issues as suggested in other threads in here and elsewhere, since I'm having unusual battery usage when the phone is off (even in the flight mode, with WiFi,GPS,Autosync off, it uses more than 10% of the battery in 6 hours).
I've used CPU Spy, OSMonitor, BetterBatteryStats, and terminal commands (ps, top, etc.) trying to pinpoint the battery problem, and I got to some results, but I got stock with this issue:
CPU Spy shows that my Galaxy Note never goes to "Deep Sleep". It's always stuck with 200 MHz when it's turned off. So, I figure the issue should be a wakelock.
The BetterBatteryStats everything is (to some extent) natural, except that it shows (in its Kernel Wakelocks page) a huge number under the name "GPS", and I don't seem to be able to find the problem. Actually, the time reported for the "GPS" wakelock is almost equivalent to the uptime of the device minus the time that the device was fully awake (screen on).
For example, I turn off the screen, wait for 10 seconds, turn back on, and the number is increased by 10 seconds. (It doesn't increase when the screen is on)
Here's what I've tried already:
- Turning off the GPS (it was off from the beginning actually)
- Turning off everything (Wifi, Cell)
- Killing most of the apps in Running Services
- Restarting the device
One important observation was that when I restart the device, the "Deep Sleep" is back for some few minutes. When I use my device for one or two minutes (nothing special, turn on Wifi, do a sync) the "GPS" kernel wakelock is back, and doesn't go away no matter what I do.
I searched a lot, and nobody seems to have noticed a high "GPS" wakelock on the kernel.
My ROM is Samsung's stock ROM (Updated to 2.3.6)
Kernel version: 2.6.35.7-N7000XXKK9-CL725676
Anyone has any idea what to do to find out what is causing the wake lock?
------------
Update:
There's a few experiments that I had:
- When I have WiFi turned off and restart the device (hold the power button, turn off, and turn back on) there is no issue (phone can go to deep sleep, and there's no "GPS" kernel wake lock). After turning on the WiFi and passing a few minutes, the issue is back.
- When I have WiFi turned on and restart the device (so that the WiFi is on from the beginning when the device starts) entering Deep Sleep is impossible. The "GPS" wake lock exists from the very beginning.
- The above issue made me think that it might be a Network Location issue. So I went to Settings > Location and security > and disabled "Use wireless networks" and restarted the device. The issue never happened again no matter how long I waited. I turned on WiFi, auto sync, manual sync, turned on GPS and used Google Maps, ... There was no problem with Deep Sleep. The device can sleep alright.
- When I changed the "Use wireless networks" setting back on, to my surprise, the issue DID NOT COME BACK. I even used it (located myself without GPS in Google Maps) and everything else... But the device can still go to sleep.
So, bottom line is that I have the issue fixed (for now!) but I can't realize what was it and why isn't it there anymore.
Anyone has any ideas?
------------
Another update:
The phone got to sleep well last night. 1 percent battery drain during the whole night. But when I got to work (the location changed), the "GPS" kernel wake lock is back, and causing the phone to stay awake. I had to disable the Network Location again to put my baby to sleep again...
-Hamed

I have the same problem..Huge GPS percetage but the GPS is off.. I will try your methode now..hope it works

I had the very same issue on KK9/KL3/KL7
I dont have the GPS enabled but the scenario is similar, I used the phone with wifi (but no wifi location services enabled) and it does not go into deep sleep till the phone is restarted and bettery battery stats show a huge uptime caused by the GPS.

I seem to be facing the same issue. My phone used to go into Deep Sleep without any issue earlier, I noticed this issue today. I'm trying OP's suggestions and will report back if it helps.

same issue here since kl7

Making me crazy.. Anyone has a solution?
It happens whenever they phone boots with wifi on... Booting with wifi off then turning it on it will sleep fine

i have exactly the same problem.
galaxy note on rocket rom v14 and v15.
i'll try your method and update if find anything. it's driving me nuts!

Exactly same problem here
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I have the same problem. Sometimes on restarting, the problem seems to go away. Have just not been able to find a pattern to see what triggers it off.
I've attached some screen shots.
My phone lost about 20% in 8 hours. At night. Ridiculous.

The only way I found around this is to reboot in airplane mode...

Maybe it's some program keeping it awake. Keeps trying to get a fix on location.
Are any of you using Samsung dive? Or have you enabled the "remote control" feature?
Sent from my GT-N7000 using XDA App

gaddy888 said:
Maybe it's some program keeping it awake. Keeps trying to get a fix on location.
Are any of you using Samsung dive? Or have you enabled the "remote control" feature?
Sent from my GT-N7000 using XDA App
Click to expand...
Click to collapse
r u using google latitude ? if so try loging out.

FFor a better experience level battery must be a full wipe and wipe Dalvik cache and have the battery load 100% and with ODIN PC to install the official rom you want depending on your country KL3 OR KL4 http://forum available here. xda-de...m.xda-developers.com/showthread.php?t=1331784 flash the kernel SpeedMod K1-1 Test 5 http://http://forum.xda-developers.com/showthread.php?t=1443385available here

I did try logging out of Lattitude. The problem didn't appear for a while, but it's back now.
Has it got anything to keeping the Auto Sync on?

I have the same problem and i am on RocketROM v19 + AbyssNote 3.2. The GPS appears after i discharge to about 80% mark.
The percenetage of my battery is from 100% to 1%, what is "GPS" that is keeping my phone from sleeping?

I have the same issue.
From time to time the GPS kernel wakelock kicks in and starts draining the battery.
This appears mainly when I connect to a Wifi network and never when I use a GSM network data link.
2 solutions for me: restart the phone with wifi off.
Enable GPS, start a GPS software like GPS test for a short while, and then leave the app and stop the GPS again.
When I check with CPU spy, the phone enters deep sleep again.

Check all the widgets on your homescreens. Anything that requires updates that use current location will activate the GPS.

it is not related to any widget or so, i tried all combinations and, no matter what, gps will come back again.
the only way around this I found was to reboot in airplane mode. it would work for a day or so and then GPS wakelock will show again needing another reboot

No need to reboot in airplane mode, just turning off wifi and reboot will work. This is troublesome as i have encountered GPS waking my phone twice a day sometimes. I am fed up with rebooting my phone. I really hope they fix this in future ICS.
I am currently testing on logging out facebook, i have yet to encounter the GPS wakelock so far. Hope all goes well and facebook is the root of these GPS wakelocks.

Did you also tried what I posted above?
Enable GPS, start a GPS software like GPS test for a short while, and then leave the app and stop the GPS again.
Click to expand...
Click to collapse
It's working for me.
I noticed that this "GPS" wakelock appears only when I'm connected via WiFi with a very weak signal.

sibere said:
Did you also tried what I posted above?
It's working for me.
I noticed that this "GPS" wakelock appears only when I'm connected via WiFi with a very weak signal.
Click to expand...
Click to collapse
I am constantly connected to a very weak wifi connection too but does that really have anything to do with the GPS wakelock? if so, i will look into this to confirm.
And your methods above, does it work permanently or whenever the GPS wakelock occurs, i have to redo the steps?

[Q] Battery Problems - falling from 70 to 0 %

Hello,
i have a bad problem with my LG starting from day one when i bought it. I tried many things now, to no avail.
The problem is that sometimes my battery falls from high percent value to 0 just in one second. then the mobile goes out and i have to charge it, even it was nearly full some minutes ago.
Another problem is a warm mobile in standby mode when i have mobile inet active, and battery wont last longer than 4 hours. With WIFI it doesnt get warm but starts to decerase RAM until the mobile is unusable (timeouts, freezes, ect)
So there are 3 problems, i think related together somehow:
1. sudden Akku drainage, falling from high percent value to zero
2. fast akku drainage with mobile inet on, doesnt fall from #to zero, but get used up very fast
3. Unusable mobile due to RAM issues when WIFI activated.
Here are following some pics and a Log attached from Android Stats. Here you can see starting at 9.34 the bettery recalculations, in very short timeframes.
Can someone see any issues from the log what could be the problem?
The situation was like this: I recharged yesterday evening, and turned mobile inet on. Then i went to sleep. In the morning i saw that i had no connection to google servers (icons white instead on green) but i saw the battery was only drained 2% over night so i thought not bad.
I reactivated internet (mobile) in hope to get conn to google servers. Well, i got it but in same time the battery got drained from 98% to just 40% in one second. Since then the mobile stays warm. I have auto sync deactivated.
LOG
http://a-wo.com/00/asi_logs-20120208-095928.log
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I forgot:
Android 2.3.4 original, rooted but nothing changed on firmware/rom/baseband/anything

So i inserted screens now.

you have some kind of background application that doesnt let your phone enter deep sleep mode to lower cpu frequency and conserve battery (phone is awake when screen is not on, you can see the activity in the pictures). you should check what app is using most of the CPU time, it might not be code optimized and might be sucking too much of the battery.
also, it might help resetting the battery stats, search a bit and find some info on that (short version, charge it to 100%, let it for another hour plugged in, go in CM, delete battery stats, restart).
worst case scenario, your battery is busted and a replacement might be needed. hope that helps.

andrei.je said:
just a hint : most battery consumption can be checked in the battery stats, on the activity graph : awake vs screen on - if awake and screen on are not synced in the activity graph (should have same lines) then you have a problem. meaning when your phone has its screen off it should go into deep sleep mode (lower cpu frequency) but if you the phone is awake while screen is off, you have an application installed that won't let your phone sleep and just keeps using the cpu and sucking the battery.
this is mostly applied to standby battery life, if you are playing a game/watching a movie, doesn't really matter screen is on, cpu/gpu is sucking the battery.
my worst battery life while i had the O2X was about 16h, but that's with normal phone use (no games - you can have a psp for that, no music - you can have an ipod for that), mostly emails, browsing, IMs, calls/texts all day long also best battery life was 2d 10h (mostly on standby)
Click to expand...
Click to collapse
Thanks for also answering my post on the other topic.
It may be that theres an app that keep our phone from sleep, but even with this app, when i dont turn on wifi or mobile internet, the mobile runs 6 days straight. This is no joke, offline it could hold 6 days, i have a screen of where it looses 8% in 28 hours. And as you can see on my screen, it happens from one second to the other.
I already changed the phone the third time now, even with very few installed apps, this remains. I had it first time on day one when bought th mobile. Since then in all 3 mobiles maybe 15 times.
Anyway, it bothered me, but not as much as that the phone went nearly unusable with internet active. Always at 50 mb ram. So it was basically an offline only phone. In my 2 tests, both 5 days without internet, the mobile neither went slow, nor went off, nor lost battry, nor anything. Very fast LG OS. Until internet...
Anyway, now i installed Chuck Norris CM /MIUI ROM, lets see what happens. Until now its so smooth and soft, it feels like a complete other mobile. Also with wifi active... but i cannot say anything until tomorrow.
I tested already a lot of System Analyzer apps but theres really not much to see. Nothing seem to use much battery in whole. At least nothing that explains a loss of 70% in 5 seconds.
I posted a log here, thats the best thing to see i guess, but i cannot really read it well :-(
Anyway, your help is appreciated
Click here to see log

Saenchai said:
Thanks for also answering my post on the other topic.
It may be that theres an app that keep our phone from sleep, but even with this app, when i dont turn on wifi or mobile internet, the mobile runs 6 days straight. This is no joke, offline it could hold 6 days, i have a screen of where it looses 8% in 28 hours. And as you can see on my screen, it happens from one second to the other.
I already changed the phone the third time now, even with very few installed apps, this remains. I had it first time on day one when bought th mobile. Since then in all 3 mobiles maybe 15 times.
Anyway, it bothered me, but not as much as that the phone went nearly unusable with internet active. Always at 50 mb ram. So it was basically an offline only phone. In my 2 tests, both 5 days without internet, the mobile neither went slow, nor went off, nor lost battry, nor anything. Very fast LG OS. Until internet...
Anyway, now i installed Chuck Norris CM /MIUI ROM, lets see what happens. Until now its so smooth and soft, it feels like a complete other mobile. Also with wifi active... but i cannot say anything until tomorrow.
I tested already a lot of System Analyzer apps but theres really not much to see. Nothing seem to use much battery in whole. At least nothing that explains a loss of 70% in 5 seconds.
I posted a log here, thats the best thing to see i guess, but i cannot really read it well :-(
Anyway, your help is appreciated
I think the problem is caused by the battery stat file. Avoiding the techinical causes you should only charge the phone untill 100% and using battery calibration (you can donwload it for free from market) calibrate the battery! Hope to be helpful ^_*
Click to expand...
Click to collapse

[Q] Weird "battery drain" when lightly using the phone

Hello !
I just bought my P880 two days ago and everything is great except one thing: battery drain. It is not occouring in background when phone is in Deep sleep, it doesn't lose charge while it's sleeping, but when I just unlock it/start using it, it just starts draining.
I have rooted it, and unrooted using SuperSU. The thing is I haven't experienced that kind of drain yesterday, it was working fine except drain caused by bad signal (badly inserted SIM).
Usage by Android System is at 50% over 5 hours, Screen is at 9%. Awake graphs are the same as Screen on graphs- no wakelocks.
I have these apps installed:
Prey Anti Theft
Skype (not running)
Adobe Reader
SoundHound
Disco Light
QR Droid
Sygic (not running)
X-plore
SwiftKey 3 keyboard
WiFi, GPS, Data, everything turned off except mobile signal
Running Internation version with Android 4.0.3, Kernel 2.6.39.4-00001-g0f9182c
Mobile network type is EDGE:2 with mobile signal -70dBm
I'm first time android user and this is my first problem so I tried to include as much info as possible.
Thanks in advance

I see 2 mayor issues, first is the android deft app, it may be running and trying to sync but bcz the data is off it will try to connect foreva.
Also, edge is (in other words) ROAMING and this forces the antenna to use more power to get signal from another provider, it get worst if you have a phone with sim card.
Sent from my LG-P880 using Tapatalk 2

Gildegan said:
I see 2 mayor issues, first is the android deft app, it may be running and trying to sync but bcz the data is off it will try to connect foreva.
Also, edge is (in other words) ROAMING and this forces the antenna to use more power to get signal from another provider, it get worst if you have a phone with sim card.
Sent from my LG-P880 using Tapatalk 2
Click to expand...
Click to collapse
Thanks for pointing that out, but I have disabled every sync and I have set phone to 2G mode only, the reason is that UMTS signal was low and was draining battery even more.
I am only losing sharge when just doing random things on phone, even if that means only adding/removing widgets/apps on main screen with WiFi off.

Then you must try the Deodexed version of v10f, removing the bloatware with the script in the same thread.
The issue may be some lg apps that are running in the background so doing this will have 6 hours in standby time with 100% still, like me (if I turn all radios off ).

I have just woken up, while sleeping (9h) phone was awake for about 50%, no wakelocks but there were 30 alarms from Android/Google maps ans 29 alarms from com.google.android.gsf
Hope this helps.
I may try custom ROMs if nothing else works.
While typing this message I have lost 7%.

Similar state here as the OP. Got the phone two days ago.
All is good, it rooted OK, Directory Bind works fine, phone runs like hell (about 10 times faster than my old Galaxy S) BUT it drains battery like a genuine power guzzler.
Ok I get that according to the performance you get, it comes with an accordingly high power draw, so I don't ***** about it, I just want to know if this is normal. I mean I played 2 hours and 15 minutes of Sprinkle and the battery died, starting from a full charge. Screen was set at 50%.
GPS is off, Bluetooth is off, no 3G mobile network and screen is at 50% brightness as I said. There's an NFC icon on the notification bar next to the battery icon, which I am not sure if it should be there.
Here are a couple of shots from the battery section of the phone and from Battery monitor widget if these help.
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Please note that as the OP said, the phone consumes nearly nothing when idling. Firmware is 10f.
PS I am not trying to hijack the OP's thread. I just noticed the same behavior and I'd like some help on the same matter, as well as to contribute in whatever way I can. If the OP is offended somehow, I will gladly start a new thread.

@psolord No, not offended at all. I'm glad you posted actually.
My phone has encountered 20 more Alarms, wake ups since I left it standing:
com.google.android.apps.maps Wakeups: 50
com.google.android.gsf Wakeups: 45
You can see pictures below, the drop on the second picture happened when I was writing me previous post from P880.
- I am also rooted again (after factory restore)
- I have reenabled 3G networks but the signal is only at about 50%.
Any additional info please ?

Ok buddy, so we can keep discussing it here together.
For the matter at hand, I see the same behavior, when I unlock the screen, it's like I have opened a whole in the battery.
It dropped from 85% to 65% just from downloading a new map (500MB, 20min download on a slow wifi) from Sygic downloader. I mean this can't be right, right?
I also checked cpu spy and it reports the system 75% at deep idle, 15% at 51Mhz and the rest are 0% to 1% up to 1500Mhz. So if the cpu has so little operation, what on earth is draining the battery?
I wonder if we could be looking at a bad battery batch.
Is there an app that reports exactly what activity consumes power and how much?

Indeed, the hole in the battery.
I even restored to factory from recovery mode since I screwed up the root, so it was just stock, but guess what, nothing has changed :crying:
I really hope this can get fixed, else I'll get a replacement.
I hope someone from this forum with more experience can help :/

I think I am onto something.
Can you please check how is the phone doing if you disable everything under location and services?

psolord said:
I think I am onto something.
Can you please check how is the phone doing if you disable everything under location and services?
Click to expand...
Click to collapse
I am going to try this, I am also talking to LG Support right now. WIll let you know when I get more information.

I disabled everything, and I didn't see pretty much any improvement. LG Support suggested me to return the phone.
Pretty much draining the battery atm so I can charge it back to 100% and use something like Battery Calibration. Maybe it can change something.

Yeah indeed I was onto nothing. Nothing changed for me either.
Playing 30mins of a 720P resulted my battery dropping from 62% to 50%. I also used the gps for the first time with Sygic (Jesus even the GPS is lightning fast) and the battery went from 50% to 30% for a 20 minute ride. It seems that my phone cannot give me more than 2 hours of use. That's just silly.
BTW do you or anybody, know of an app that can show battery usage per app?

psolord said:
Yeah indeed I was onto nothing. Nothing changed for me either.
Playing 30mins of a 720P resulted my battery dropping from 62% to 50%. I also used the gps for the first time with Sygic (Jesus even the GPS is lightning fast) and the battery went from 50% to 30% for a 20 minute ride. It seems that my phone cannot give me more than 2 hours of use. That's just silly.
BTW do you or anybody, know of an app that can show battery usage per app?
Click to expand...
Click to collapse
Stock application ?
Also you can use Better Battery Stats to see if there are any wakelocks or anything is waking up the phone etc.

What is happening right now is rather strange, I disabled screen turning off (trying to drain battery to 1%/2%) looking at stock battery app, it seems to be stuck at 21% and it's not changing.

The stock application does not do so much analysis, but the batterystats you used above seems more like it.
I am getting panicked and I miss some stuff haha. Ok lets cool.
It makes me sad that we don't get any input from the community. Something like "yeah this is normal, live with it" or "your phone is faulty, take it back to the shop for a replacement" or something.

Agreed, ANY, ANY kind of input would be appreciated, but I guess we are getting none.
I am going to fully charge it today, do some stuff and report back tommorow. Also anyone, please do post any suggestion you may have.

shiinkotheone said:
What is happening right now is rather strange, I disabled screen turning off (trying to drain battery to 1%/2%) looking at stock battery app, it seems to be stuck at 21% and it's not changing.
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Maybe this has to do something with the built in power saver. Maybe it kicks in when the battery drops to the 20s and stops whatever is draining it.
I am thinking trying some battery saver to see if it does the same thing but from the beginning of the full charge.

psolord said:
Maybe this has to do something with the built in power saver. Maybe it kicks in when the battery drops to the 20s and stops whatever is draining it.
I am thinking trying some battery saver to see if it does the same thing but from the beginning of the full charge.
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Actually I have disabled it when it asked me if it should turn on. So I guess nothing to do with that.

I am going to backup now, fully unroot and somehow get it to pure stock. Than I'm probably going to exchange the phone in case battery life doesn't change.

[Q] Can someone explain how forgetting wifi networks improves battery?

Sorry if this is a stupid question. But i read somewhere that forgetting (deleting) wifi networks would help battery. For me, this actually worked. Im not a power user so my phone will be idle for hours at a time. Coming from an iphone (i know its not a fair comparison cuz iphone is more lightweight), i would lose ~5% during 9.5 hours of work if i never took it out of my pocket. On the gnote3, i sometimes get 15%-20% drain even with a screen time of ~30min. But after forgetting the wifi networks, drain is reduced to 5%-10% within that 10 hours im working. So can anyone explain why after a few weeks, my battery will start to drain quicker again until i forget my 2 wifi networks (work and home)? As a disclaimer, that 5% on the iphone is when i literally didn't take the phone out of my pocket at all. I am playing with my gnote3 more than the iphone (the newness still hasn't worn off for me yet), but i wanted to throw the iphone stats in as a reference.

JTY87 said:
Sorry if this is a stupid question. But i read somewhere that forgetting (deleting) wifi networks would help battery. For me, this actually worked. Im not a power user so my phone will be idle for hours at a time. Coming from an iphone (i know its not a fair comparison cuz iphone is more lightweight), i would lose ~5% during 9.5 hours of work if i never took it out of my pocket. On the gnote3, i sometimes get 15%-20% drain even with a screen time of ~30min. But after forgetting the wifi networks, drain is reduced to 5%-10% within that 10 hours im working. So can anyone explain why after a few weeks, my battery will start to drain quicker again until i forget my 2 wifi networks (work and home)? As a disclaimer, that 5% on the iphone is when i literally didn't take the phone out of my pocket at all. I am playing with my gnote3 more than the iphone (the newness still hasn't worn off for me yet), but i wanted to throw the iphone stats in as a reference.
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Well I'm not certain if it actually works this way or not. But here's a theory..... If you have a bunch of stored wifi access points and aren't connected to any, the phone might be looking for those connections? But isn't it looking for wifi anyway? Maybe if you don't have stored access points it doesn't look so often? That's my theory on this situation that I've never heard before but anything is possible because it's the internet!!! The easier fix to this without deleting your wifi access points is to disable wifi all together. You can even add a shortcut to your homescreen!
If you really want to get to the bottom of this and find out what was happening I would install Wakelock Detector. Even when you're not using your phone because it's locked in your pocket, rogue apps or processes can wake your cpu. This app will tell you what's waking your device and draining the battery. If your device is rooted I HIGHly recommend getting Greenify. You can choose to hibernate apps directly from the wakelock detector app. Now how cool is that!!

I like what ^he said. Only if your WiFi is constantly on but not connected it will constantly be scanning which will impact battery. If its connected but a weak signal this will also impact battery life poorly, same as constantly connecting and disconnecting. I leave all my WiFi on all the time at home and over 10 hours of non use only drop 2% or less. However in your WiFi setting there is a setting that has an option to disable WiFi when asleep. If your always pulling your phone out to play with it and have this option enabled then every time you turn your phone on it will scan for a network. And turn back off when you turn the screen off. I am not a fan of this option and for better battery life leave your WiFi on all the time UNLESS you don't have a network to connect to. If you're connected leave it on, if not turn it off. I recommend to set it up like this.
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RErick said:
I like what ^he said. Only if your WiFi is constantly on but not connected it will constantly be scanning which will impact battery. If its connected but a weak signal this will also impact battery life poorly, same as constantly connecting and disconnecting. I leave all my WiFi on all the time at home and over 10 hours of non use only drop 2% or less. However in your WiFi setting there is a setting that has an option to disable WiFi when asleep. If your always pulling your phone out to play with it and have this option enabled then every time you turn your phone on it will scan for a network. And turn back off when you turn the screen off. I am not a fan of this option and for better battery life leave your WiFi on all the time UNLESS you don't have a network to connect to. If you're connected leave it on, if not turn it off. I recommend to set it up like this.
Sent from my SM-N900A
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I've got the same setup as you! It seems to work for me as you can tell by my battery stats.

What I usually do is I just take a few seconds to disable everything other than mobile data when I'm out and about. If I need to check emails I do so with a manual sync, unless it's during work or on-call hours (Gotta keep them servers running 24/7!) in which case I leave on autosync.
I try to never leave location on unless I need to use Maps, and because of that I keep all the stuff that's supposed to use WiFi even when WiFi is off disabled as well. I'm sure there's fifty ways I could automate all of this into profiles but I like the manual control over my battery consumption.
I haven't run numbers but I've kept the phone uncharged for almost two days with no problems. I was even able to make it back to home on the last 5% with three or four subway stops and plug her in before she died. And that's with the default battery.
I think it's more about overall mindfulness of what processes are running versus an insane level of finetuning for the process. If you make sure A) that WiFi is disabled, and that B) WiFi is *REALLY* disabled, meaning no scanning for networks or being used for location services, then even if you have fifty networks saved it won't scan for any of them.