Database Develop

battery life question

There is a lot of conflicting info about Wifi vs 3g.
Which is better to use in term of saving battery?
Does Signal strength of either affect battery life?
IF using wifi, should you have it to always on ( when in wifi zone of course) or should you have it set to sleep when screens off?

I've done testing on that and I've noticed that when using the phone in long intervals, its better to disable connections but when using the phone in frequent bursts it's better to just leave it on. But this is when you are in wifi range the entire time.
Sent from my GT-I9000 using XDA App

I typically have my wifi (and 3g) disable itself when the screen goes off. It seems to restore very quickly. I use Juice Defender (in market) to manage this, which I believe does a pretty good job improving battery life.

wbcollins said:
I typically have my wifi (and 3g) disable itself when the screen goes off. It seems to restore very quickly. I use Juice Defender (in market) to manage this, which I believe does a pretty good job improving battery life.
Click to expand...
Click to collapse
Completely agree, some people say juice defender drains your battery, but don't believe them haha
Sent from my GT-I9000 using XDA App

with the whole jD controversy. I'm assuming it has to do with how often the phone is coming out of sleep. If your using your phone every 5 or ten minuets a day then JD probably is going to use more battery then not having it vs lets say you let your phone sleep for half an hour or hours at a time...
Turning a car on and off ( im assuming) takes more gas then letting it run for a few minuets ( correct me if im wrong, but its just an analogy ;] ) but leaving your car run for a hour because your going to use it ina bit isnt effective at all.

Agreed that turning off networking when not needed (Wifi or 3g) will help battery life.
Signal strength of 3G and Wifi will impact battery life, as both protocols will adjust the power when the signal strength is high - low. Your phone will also crank up the power when the signal for basic voice service is weak to keep you connected.

I think over the course of a day at work, juice defender pays off. You can use it in lots of different ways, though the interface is a little clumsy. It also helps me, with help from juice plotter, to determine if my data connections are indeed staying off when I want them to or consuming more energy than they should. When my phone is in my pocket, I don't want it doing much.

can anyone get into more detail about the question at hand?
as in what is better then what .
2 wifi bars better then 2 3g bars?
which uses LESS power ?

IMO, i would say wifi uses less power since the signal doesn't need to travel far to get to your access point vs a 3G signal that needs to go a mile to get to the cell tower. But I'm not an electrical engineer so take it for what it's worth. I leave wifi enabled and use JuiceDefender to turn it on and off as needed. I'm more concerned about data usage since for me wifi is unlimited and 3G is not.

most ISPs limit Bandwidth to 250GB a month. so its not unlimited... so try to stay under that ;]

My experience, turn off wifi is better for bettery life. The battery level almost constant when the wifi is off. The level drop about 2-4% Per hours if wifi is on.
Sent from my cappy.

If you leave wifi on when you're not connected, it drains a lot of battery.
Sent from my SAMSUNG-SGH-I897 using Tapatalk

Battery Drain On s3 i19305

Hi, need some help,
I got this phone a couple of days back, its an unlocked one. Battery on the phone seems to be draining faster than i expected it to. The first time i charged it, it took 3 hours in the afternoon. By night it was 20% this was after playing games and downloading through wifi, so it seemed ok. I then put it for charge overnight. The next day it still seemed to drained by 7pm only used whats app this day, so i had to put for charge again.
Once fully charged (2 hrs) I shut off wifi, bluetooth, nfc and others. Switched off smart stay options and the display is set to lowest brightness (not auto). The wallpapers is also black so it will not drain battery. Overnight without the phone being used (only thing i set was alarm) the charge went from 89% to 78%. During the day I also find the charge still dropping pretty rapidly. I have included the screen shot of the battery from the same day. Between the first pictures there is no difference in use and still drops by 3% in 20 mins or so.
Is this a problem with the battery or is that how it is?
(Stock, no changes to rom)

Not sure if this is your specific problem - but one thing I've found that kills this phone fast is bad 4G cell reception. By default the phone runs as LTE/GSM/WCDMA (Auto) in Settings->Mobile Networks . If you are in a location with patchy (or none at all) 4G Coverage, the phone wastes an inordinate amount of juice switching to high-power mode on the cell radio searching for the elusive 4G/LTE ... Just like a 3G phone will deplete its battery extremly fast in a location with no/poor 3G connectivity (inside the 'secure' datacentres I wander into occasionally that have cell blockers, I can deplete the battery in a phone in about 3 hours just due to it constantly switching to high-power 'cell search' mode as it has no details on any cells to 'hand off' to....)
The difference is palpable... inside my office, if I have the phone on the right side of my desk closest to some windows, it will receive 'patchy' 4G and I'll go through about 60% battery over about 8-10 hours with intermittent phone use (most of the battery goes to screen time as I'm a 'fiddler' whenever I leave my desk for a coffee/break/etc...) If I place it on the left side of my desk, where the reception is much worse, it'll fall back to 3G and I'll go through about 80% battery doing nothing different...
I'm now in the habit of switching the phone to WCDMA Only when I'm going to be working in the bowels of the building, as there aint no hope of 4G there...Doing this drastically improves battery life.. Likewise if I'm stuck at home over the weekend, I leave it on WCDMA, as where I live has very patchy 4G as well and I only get it if I walk outside and down the street...
Just a possible reason for the excessive drain... at least worth trying anyway... *shrug*

adr6ian said:
Not sure if this is your specific problem - but one thing I've found that kills this phone fast is bad 4G cell reception. By default the phone runs as LTE/GSM/WCDMA (Auto) in Settings->Mobile Networks . If you are in a location with patchy (or none at all) 4G Coverage, the phone wastes an inordinate amount of juice switching to high-power mode on the cell radio searching for the elusive 4G/LTE ... Just like a 3G phone will deplete its battery extremly fast in a location with no/poor 3G connectivity (inside the 'secure' datacentres I wander into occasionally that have cell blockers, I can deplete the battery in a phone in about 3 hours just due to it constantly switching to high-power 'cell search' mode as it has no details on any cells to 'hand off' to....)
The difference is palpable... inside my office, if I have the phone on the right side of my desk closest to some windows, it will receive 'patchy' 4G and I'll go through about 60% battery over about 8-10 hours with intermittent phone use (most of the battery goes to screen time as I'm a 'fiddler' whenever I leave my desk for a coffee/break/etc...) If I place it on the left side of my desk, where the reception is much worse, it'll fall back to 3G and I'll go through about 80% battery doing nothing different...
I'm now in the habit of switching the phone to WCDMA Only when I'm going to be working in the bowels of the building, as there aint no hope of 4G there...Doing this drastically improves battery life.. Likewise if I'm stuck at home over the weekend, I leave it on WCDMA, as where I live has very patchy 4G as well and I only get it if I walk outside and down the street...
Just a possible reason for the excessive drain... at least worth trying anyway... *shrug*
Click to expand...
Click to collapse
Hi thanks for the reply. My phone does not show WCDMA in settings. It just has 2g/3g/4g/ auto OR 3g in network modes under mobile networks.

varun.k said:
Hi thanks for the reply. My phone does not show WCDMA in settings. It just has 2g/3g/4g/ auto OR 3g in network modes under mobile networks.
Click to expand...
Click to collapse
I have used an app called "Radio Switcher" to activate "gsm auto (prl)", when i open the app it seems to go into "Device info". It seems to work but "Network mode" does not seem to change.

I have uploaded the screenshots

Seems as though the system is using more battery than the screen itself.

The system seems to really take up way too much battery power. Mine is at 4%.
What are your sync settings? Especially for things like Weather, stocks, news etc. If you set them to sync every hour or so, your phone will keep running on the 3G network which will end up draining your battery.
Also, switch off motion. It's a cool feature, but it's not necessary. Same with auto-rotate.
Finally, use WiFi instead of 3G where possible. That saves battery too.
If you're rooted, download noFrills CPU control and reduce your max clock frequency on days where you won't get a charge. Phone runs well enough on 800mhz, but has a tendency to keep going at 1.4Ghz for no reason.
Otherwise, get a higher capacity battery

Snowstormzzz said:
The system seems to really take up way too much battery power. Mine is at 4%.
What are your sync settings? Especially for things like Weather, stocks, news etc. If you set them to sync every hour or so, your phone will keep running on the 3G network which will end up draining your battery.
Also, switch off motion. It's a cool feature, but it's not necessary. Same with auto-rotate.
Finally, use WiFi instead of 3G where possible. That saves battery too.
If you're rooted, download noFrills CPU control and reduce your max clock frequency on days where you won't get a charge. Phone runs well enough on 800mhz, but has a tendency to keep going at 1.4Ghz for no reason.
Otherwise, get a higher capacity battery
Click to expand...
Click to collapse
My sync is off, plus i have disabled sync for everything individuality and disabled all unwanted apps. Data service is also off, only use wi-fi. under motion only smart call is on and auto rotate us off.
I have uploaded a screen shot off after ti disable all these apps.(went to bed with 35% and was 28% in the mornin, turned wifi off before)

Will upgrading (official) phone to android 4.1.2 help (current ver is 4.1.1)? Current base band version is i9305BVALI5 i got an update on kies to i9305BVALI3. I don't think this is update to 4.1.2 is it?

I have updated to 4.1.2, and applied only gsm setting in mobile network. All apps are still disabled as before. The system still seems to be suing most amount of battery, more than the screen. I do not know what is using the system.

I have stared having the same problem a couple of days ago. Though I have sync enabled 0-24 for 3 gmail accounts, motions are on, screen auto rotate is also on. I am using nova launcher, almost all Samsung apps are frozen and most of time I am on wifi.
Now, this drain has nothing to do with the stuff I just mentioned (Enabled sync, motions...). I have all that things enabled all the time, and yes MPU and GPU are OC to 1600 and 640 MHz. But I was always getting >= 24h with ~3,5 h of screen on time. As I already mentioned, problem started a couple of days ago. Only thing which comes to my mind is that I have played with freezing / defrosting apps and I probably installed a couple of apps too. Like Beautiful Widgets and that's my main candidate to blame for this at the moment.
Though I am still not sure... Better than battery stats didn't show anything what could help. Network location locator or similar is at the top of the list of partial wake locks. But the time it hold the lock (About 25 min.) can't be the reason for such a high drain.
I have switched to HD Widgets, what I was using before (With this app one can disable auto location.) removed Beautiful Widgets, and turned off'Use wireless networks' and GPS in location services hoping it will help... So we'll see...

For me it still shows that adroid system and cell standby time is using a lot battery.

I don't get why android system and OS is using so much battery, everything is disabled. Network is on only GSM setting and i have network all the time, why is that also high? Does someone else also have the same problem?

If possible, install Better Battery Stats, maybe it will help you to identify the problem... In my case it is not of much use at the moment.
Sent from my GT-I9305 using xda premium

Strange idea: download an anti-virus and let it run.
Might as well give it a shot now, especially since AV is free.

Snowstormzzz said:
Strange idea: download an anti-virus and let it run.
Might as well give it a shot now, especially since AV is free.
Click to expand...
Click to collapse
I was using AVG, but i removed it thinking it could drain battery.

Sv: Battery Drain On s3 i19305
varun.k said:
I was using AVG, but i removed it thinking it could drain battery.
Click to expand...
Click to collapse
I think he meant that it could be a virus that drains all the battery.
Sent from my GT-I9305 using xda app-developers app

sebbe312 said:
I think he meant that it could be a virus that drains all the battery.
Sent from my GT-I9305 using xda app-developers app
Click to expand...
Click to collapse
I did an upgrade using odin to 4.1.2, the issue still remains though. The screen shots i posted is with the update.
So any virus should also be wiped out right?

varun.k said:
I did an upgrade using odin to 4.1.2, the issue still remains though. The screen shots i posted is with the update.
So any virus should also be wiped out right?
Click to expand...
Click to collapse
Anyways i tried it, does not seem to work though.

!crazy said:
If possible, install Better Battery Stats, maybe it will help you to identify the problem... In my case it is not of much use at the moment.
Sent from my GT-I9305 using xda premium
Click to expand...
Click to collapse
I have installed better battery stats, and it says that battery drain is 6% an hour at idle. I have attached the screen shots. I do not have root access to access some of its functions though.

[Q] Is this normal battery drain?

My cell standby is really really high and I'm nowhere near the 6+ hours SoT that people seem to be getting here. I even followed the battery optimization guide and disable all the moto features on the phone. I also changed my preferred network type from "Global" to "LTE/CDMA" to supposedly save more power.
Is anyone else having odd drain? I attached a list of the apps I disabled as well.

Cell stand bye does seem high. Silly but I'm sure you have turned phone off and fully charged to see if it remedies?
All else fails factory reset, I know it's a pain.

Broadley1 said:
Cell stand bye does seem high. Silly but I'm sure you have turned phone off and fully charged to see if it remedies?
All else fails factory reset, I know it's a pain.
Click to expand...
Click to collapse
I charged it while it was on fully after draining it to 1% when I first bought it. I have not turned it off or charged while it was off. I'll do that later when it is around 5% after work.
How would the factory reset help? I would reinstall the same apps again anyway so if that is the problem I wouldn't know it.

I didnt mess with any network settings but cell standby is higher than screen on my battery stats. My battery life isn't bad by any means but not as good as some others are getting

I've seen this issue reported by 2-3 other users, it's either related to the cell coverage in your area or might even be a faulty radio. Cell standby is usually high on my list but still about 1/4 of the power draw of my screen (assuming my average SoT of 6 hours) and around -96dBm (3-4 bars) signal strength. Try checking your signal strength - if you don't have an app for it, do: Settings > Wireless and Networks > More > Mobile Networks > Network type and strength.

I have this issue. My signal sucks at home. Only 3 bars most of the time.
Sent from my XT1254

Same issue here ... Just switched to ART and I'm going to switch from global to LTE/CDMA to see if I can knock it down a bit. Reception at my work is terrible in some spots (hospital). At home its not so bad.
Sent from my XT1254

Unexpected great battery life

Picked up my phone yesterday afternoon and after receiving the OTA and factory resetting afterwards, my battery life has been fantastic on the first initial charge. My screen on time is at 6+ hours and still going.
I haven't done anything special. My phone is bone stock with only T Mobile bloat disabled.
Is anyone else getting ridiculous screen on time?

Is this just leaving the screen on and not doing anything?

No...Just my regular usage on a lazy Sunday night while in bed.
I'm on wifi.. with Wifi calling on, web browsing watching videos on youtube, a couple phone calls and heavy texting. Also have 3 gmail account with push notification.
Stats look funny with the cell standby on top of my usage. Usually it's the screen that's on top

I've been really impressed with the battery on this device. It's been more than enough to get me through an entire work day. The fast charge feature is great for a quick top off before a night out.

I don't think this is out of the ordinary, I think the question was standby + SOT. It's easier to get high SOT times if there is no standby associated. So 6hrs SOT while the phone has been off the charger for 7hrs isn't as big of a deal as 6hrs SOT + being off the charger for over 24hrs.

That Cell Standby too, damn...that's caused by having VoLTE and WiFi Calling on. Agree with what everyone else said, 6hrs SOT with the phone being on for 7hrs41min is not really a proper measure of your battery.

shook187 said:
No...Just my regular usage on a lazy Sunday night while in bed.
I'm on wifi.. with Wifi calling on, web browsing watching videos on youtube, a couple phone calls and heavy texting. Also have 3 gmail account with push notification.
Stats look funny with the cell standby on top of my usage. Usually it's the screen that's on top
Click to expand...
Click to collapse
The real question is...why is cell standby the highest battery user if you've been on wifi with wifi-calling? this is what makes no sense.

I am able to last a full work day just streaming satellite radio and always on and off it throughout the day and still have a lot of a room to spare. Pleasantly suprised with how great the battery life is. Short of watching video's I am still at 30% range come night time. My S4 would of bottomed out at some point in the afternoon. I have to train myself to not have this phone plugged in every outlet I can lol.

That screen-on time.....
I get 4 hours max....... With whiped cache, VoLTE off, wi-fi scanning off, and wi-fi calling off.
Spotify and maps both slaughter the battery, but still.

Wifi/VoLTE calling
Yeah I've noticed that when on WiFi calling (with or without VoLTE enabled) phone never shuts down the radio. As in, I actually see both the signal strength indicator (crappy at my office) and WiFi calling, which never happened on my Lg G3 -- as soon as it goes on WiFi calling it'd turn off regular radio.
I bet that's the reason for big cell standby energy consumption.
Did anyone else notice this?

eMax999 said:
Yeah I've noticed that when on WiFi calling (with or without VoLTE enabled) phone never shuts down the radio. As in, I actually see both the signal strength indicator (crappy at my office) and WiFi calling, which never happened on my Lg G3 -- as soon as it goes on WiFi calling it'd turn off regular radio.
I bet that's the reason for big cell standby energy consumption.
Did anyone else notice this?
Click to expand...
Click to collapse
http://forum.xda-developers.com/tmobile-galaxy-s6/general/discuss-battery-problem-t3071622
Whipe your cache and disable wifi-calling and volte. The radio won't consume so much battery afterwards.

KingFaisal said:
http://forum.xda-developers.com/tmobile-galaxy-s6/general/discuss-battery-problem-t3071622
Whipe your cache and disable wifi-calling and volte. The radio won't consume so much battery afterwards.
Click to expand...
Click to collapse
Um... no. Without WiFi calling phone is useless. I was asking if anyone else had WiFi calling on and NO cell signal indicator at the same time

eMax999 said:
Um... no. Without WiFi calling phone is useless. I was asking if anyone else had WiFi calling on and NO cell signal indicator at the same time
Click to expand...
Click to collapse
i get the wifi calling and no signal type indicator (IE 4g, LTE, etc) but i do get signal bars. This is exactly how it functioned on my g3 as well though with the lollipop update. If you want no bars showing, you have to change your wifi calling prefs to "never use cellar network"

frettfreak said:
i get the wifi calling and no signal type indicator (IE 4g, LTE, etc) but i do get signal bars. This is exactly how it functioned on my g3 as well though with the lollipop update. If you want no bars showing, you have to change your wifi calling prefs to "never use cellar network"
Click to expand...
Click to collapse
Yeah my G3 before lollipop would simply remove the cellular indicator after about a second on the WiFi calling. I wonder if it's something that just changed in the system.
It's really annoying as previous behavior was exactly the logical one -- found WiFi, WiFi calling kicks in, regular radio gets turned off in a bit (hence no bars any more), if you go outside of WiFi coverage it turns back cell radio. Signal is so crappy at the office
Hopefully they'll fix it. I guess for now I have to keep switching "no cell at all, WiFi only" and back to "ok, cell but no WiFi calling". Ick.

I got 3 hours sot with 53% left to go. I have to say i am getting close to my note4 on this. I am very impressed so far.

Mine is doing well today. This is with Spotify and Snapchat usage.

Mine is getting better

So WiFi calling and volte on?

Yes to volte I don't use WiFi calling

I have airplane mode on, wifi calling, while I'm at home. Saves the most battery.

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.
Click to expand...
Click to collapse
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
Click to expand...
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...
Click to expand...
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.