Develop Bugs

Battery discharge on idle...

Hi,
I have use my phone 30min and idle
6h05 and I lost 35% of battery...
Is it normal or I have a problem?
Thx
Sent from my Galaxy Nexus using XDA

You probably have a rouge app. Download "Where's my Droid power" and it will tell you which app is keeping the phone awake and close it.
Sent from my Galaxy Nexus using xda premium

My day :
12h11 12% :
1h28 display : 48%
10h43 idle : 12%
...
I install Where My droid Power :
IU Systeme : 3,48%
Swiftkey : 3,1%
LightFlow : 1,49%
Phone : 1,28%
...
Thx
Sent from my Transformer TF101 using xda premium

The native ICS app has some battery statistics. Go to settings-battery and it gives you some indication of what is being used.
Mine almost exclusively says most is from screen.
You might consider some application killing software through the play store.
Sent from my Galaxy Nexus using XDA

wparkins said:
The native ICS app has some battery statistics. Go to settings-battery and it gives you some indication of what is being used.
Mine almost exclusively says most is from screen.
You might consider some application killing software through the play store.
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
Don't use those, please.
It ruins the stability of said apps.
And...
I find the most useful feature of the stock android battery stats to be the graph.
Settings>battery>click the graph.
If you're "Screen On" and "Awake" bars are close to being the same...it's good.
If awake is on really frequently with your screen off...it's bad.
Keep in mind that playing music and making phone calls will keep your phone awake with the screen off. That's fine.

Jubakuba said:
Don't use those, please.
It ruins the stability of said apps.
And...
I find the most useful feature of the stock android battery stats to be the graph.
Settings>battery>click the graph.
If you're "Screen On" and "Awake" bars are close to being the same...it's good.
If awake is on really frequently with your screen off...it's bad.
Keep in mind that playing music and making phone calls will keep your phone awake with the screen off. That's fine.
Click to expand...
Click to collapse
I don't understand so I post screen, bad or Good?
Sent from my Galaxy Nexus using XDA

Jubakuba said:
Don't use those, please.
It ruins the stability of said apps.
And...
I find the most useful feature of the stock android battery stats to be the graph.
Settings>battery>click the graph.
Click to expand...
Click to collapse
I couldn't agree more on the battery and data usage graphs.
Thanks for the tip on app killing software, it seems all kinda of places have recommended them even though I never used one yet.

Plz help me
Franco.kernel r43 with AOKP b34
Default voltage, governor interactive. Fréquence 350/1000
Thx
Sent from my Galaxy Nexus using XDA

Some quick things that could save you some battery:
- dissable 4g when you are not using it if you have a gsm hit 2g networks only..
- Turn bluetooth and GPS on when you need them power them off when you are not using them. there's a nice widget you can add to your homescren to keep those settings in check.
- if you are a chatter. install chat apps that use Push. a nice example:
a) msn, facebook chat: Trillian
My phone lasts for something like 20 hours (on normal use) but I recharge it every night.. (when I go to sleep I plug it in). If you are a heavy user you can consider buying a better battery, or keeping a small solar powered powerbank in your bag..

amonfog said:
My phone lasts for something like 20 hours (on normal use) but I recharge it every night.. (when I go to sleep I plug it in). If you are a heavy user you can consider buying a better battery, or keeping a small solar powered powerbank in your bag..
Click to expand...
Click to collapse
Could you please explain "normal use" to me, because 20 hours battery life is something I haven't seen since a blackberry.

amonfog said:
Some quick things that could save you some battery:
- dissable 4g when you are not using it if you have a gsm hit 2g networks only..
- Turn bluetooth and GPS on when you need them power them off when you are not using them. there's a nice widget you can add to your homescren to keep those settings in check.
- if you are a chatter. install chat apps that use Push. a nice example:
a) msn, facebook chat: Trillian
My phone lasts for something like 20 hours (on normal use) but I recharge it every night.. (when I go to sleep I plug it in). If you are a heavy user you can consider buying a better battery, or keeping a small solar powered powerbank in your bag..
Click to expand...
Click to collapse
Thanks but
No bt, no gps, no chat
I try 2g only so
Sent from my Galaxy Nexus using XDA

I think I find solution
Switch 2G when display off
Stop Wifi when display off
60% and 8h30 use... (with much lost this morning without this config )
Confirm tomorrow
Sent from my Transformer TF101 using xda premium

[Q] Is this acceptable battery life?

So I unplugged the phone at 7am in the morning,its almost 12 hours since.
My Usage was browsing 20 mins,facebook 10 mins, 5-10 texts, few apps installation,5-10 emails,5 min instagram,10 minutes of calls, 5-10 minutes reading pulse,GPS on for 5-10 minutes
And general other things using the screen to look up contacts etc.
These are the screenshots below.
Im running everything stock jellybean 4.1.1,stock rom,stock kernel. Its rooted and installed flash apk.
Now i would like to know is this really light Usage?
For this usage,is the battery life good or can it be made better?
Thank you for your time!

Check your location settings in Maps. It seems Google Now is using up the battery by using the "Update Location" feature on my phone.

Yep the location settings are all enabled.
Sent from my Galaxy Nexus using xda app-developers app

Srirama said:
Yep the location settings are all enabled.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
I think the "Location" features in Google Now need some fine tuning. I believe Google Now requires that you have location updating turned on to work so I have opted to turn off Google Now to see if Google will make it more efficient in the future.

But does this constitute average battery life?
Sent from my Galaxy Nexus using xda app-developers app

And this is the screen usage time.
Sent from my Galaxy Nexus using xda app-developers app

the subjav
Maybe I've always had below average battery life, but if I'm on any rom and I get 12+ hours of it + around 3 hours of screen on time. I usually consider it average. But that's basically what I've got on any rom/kernel, even stock.

At least your Nexus has better battery life than mine!
I'm using stock JB JRO03C ROM with stock kernel + XXLF1 radio baseband and with 3 hours screen using will drain my Nexus's battery too quick...
I gonna buy extended battery for my GSM Nexus but it will not help really much, maybe I gonna test Jame Bond kernel for Jelly Bean if that gives better battery life to my Nexus..

Srirama said:
But does this constitute average battery life?
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
I'd just checked mine and I'd gotten about 15 hours with at least 100 texts, 4 5 minute calls, 2 hours of music playing through headphones, constant facebook checking, and wifi on for 50% of battery time all with google now turned on and when put on charge still had about 30% batt. left.
I am using the jelly belly v3 rom though so can't speak for stock.

sanyokt4j said:
I'd just checked mine and I'd gotten about 15 hours with at least 100 texts, 4 5 minute calls, 2 hours of music playing through headphones, constant facebook checking, and wifi on for 50% of battery time all with google now turned on and when put on charge still had about 30% batt. left.
I am using the jelly belly v3 rom though so can't speak for stock.
Click to expand...
Click to collapse
Wow thats amazing battery life.
I never could manage so much and listening to music drains a lot of battery for me. I'm on stock 4.1.1, I consider mine as light usage too,wish I could get more out of it.
Sent from my Galaxy Nexus using xda app-developers app

Srirama said:
Wow thats amazing battery life.
I never could manage so much and listening to music drains a lot of battery for me. I'm on stock 4.1.1, I consider mine as light usage too,wish I could get more out of it.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
The music doesn't seem to drain my battery much, its only if I keep messing with the player.

Are you just listening to music or streaming it?
Sent from my Galaxy Nexus using Tapatalk 2

about 3/4 just listening the other was streaming, mind you this was into my headphones not through phone speaker

Try reducing the display brightness, it's the biggest factor in battery-drainage for me.

The display is at quite a low level. Maybe I need to flash other Roms to get better battery life.
For example right now.
My phone has been unplugged for roughly 2 1/2 hours. And I'm down to 86% and the screen usage time is only 33 minutes.
Sent from my Galaxy Nexus using xda app-developers app

try getting CPU spy and seeing if the phone is going into deep sleep, maybe you have an app that keeps it awake?

Srirama said:
The display is at quite a low level. Maybe I need to flash other Roms to get better battery life.
For example right now.
My phone has been unplugged for roughly 2 1/2 hours. And I'm down to 86% and the screen usage time is only 33 minutes.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
That roughly translates to 17 1/2 hours with 3 1/2 hours screen on time. Which is pretty average depending on what apps you use.
Could you provide more details like what apps/widgets you have with what sync settings you're using, email accounts, weather, etc?
Also, what variant of the Nexus are you using? GSM? Verizon? And are you using the stock battery or an extended?

Am getting 11hours 30 minutes now with 10% left.Thats worse than yesterday with pretty much the same usage. Infact i defaulted to 2G networks and didnt even use 3G.
Sure,Im using the stock weather widget and what's this song widget.
The apps that i use daily are pulse,facebook,twitter,gmail,messages,people,speedtest(maybe once or twice a day),xda,gallery,google talk,dropbox and Gtasks.
2 Gmail accounts and 1 other email account are in push sync.
and maybe few pictures with the stock camera app
Im using the GSM international version
Im on stock battery.
The accounts in sync are shown in the screenshot(except for dropbox,everything else is on)

Its even worse now.
6 hours from unplugging and am down to 50%
Sent from my Galaxy Nexus using xda app-developers app

Srirama said:
Am getting 11hours 30 minutes now with 10% left.Thats worse than yesterday with pretty much the same usage. Infact i defaulted to 2G networks and didnt even use 3G.
Sure,Im using the stock weather widget and what's this song widget.
The apps that i use daily are pulse,facebook,twitter,gmail,messages,people,speedtest(maybe once or twice a day),xda,gallery,google talk,dropbox and Gtasks.
2 Gmail accounts and 1 other email account are in push sync.
and maybe few pictures with the stock camera app
Im using the GSM international version
Im on stock battery.
The accounts in sync are shown in the screenshot(except for dropbox,everything else is on)
Click to expand...
Click to collapse
Facebook is notorious for battery drain. Check the settings in Facebook and make sure to "uncheck" the location setting. Also, try to switch a couple email accounts to do "hourly" checks instead of push (unless you absolutely need them to be push). Also, try reducing the sync intervals on apps like Pulse and Twitter.
Considering you're using the stock battery the battery life seems on par with the usage your phone is getting even when not using the screen. Push, sync, and apps that use a lot of data transfer (like Dropbox) use significant battery.
I noticed the "Maps" application is using up a good amount of battery in your screenshots which means it's probably updating your location quite a bit and/or you use Navigation. Either way, that eats battery life as well. A lot of apps use location so it would be best to check those settings as well.
Also, depending on when you're using "2G", it could mean it is taking longer to pull data which might lead to battery drain.

Tips and tricks: improve JB idle battery life.

Confirm the following option is unchecked:
Maps/Settings/Location settings/Report from this device.
If it is checked, uncheck it.
Here's the difference in battery life -
About half the battery drain with the option unchecked.

Thanks for the tip
Sent from my SPH-L710 using xda premium

It looks exactly the same lol. Just one was running on battery longer than the other?

ReapersDeath said:
It looks exactly the same lol. Just one was running on battery longer than the other?
Click to expand...
Click to collapse
What are you talking about? Did you zoom in to see screen on/awake usage? Both are about 7.5 hours of idle time.

I updated my phone to JB and followed the battery saving measures and the battery is dropping very quickly.
Before it could last up to 3 days in standby, now I'll be surprised if it lasts 8 hours.
I'll give it another day then try a factory reset if it does not improve.
Anybody else seeing this?
I have watchdog on the phone and it shows zero cpu off time.

Just install better battery stats, there is also a way to dump the same info in terminal but I don't use it. You are looking for alarms apps cause. It's most likely maps, followed by talk, exchange client, or anything like Twitter, FB,g+,stocks.... but most likely maps location settings
Sent from my SPH-L710 using Tapatalk 2

I have been doing a lot of research and the end result is that JB out of the box will eat your battery and yes disabling the settings under maps does in fact help a lot but there is a lot more you can do to get good life... for starters get the simple stuff out of the way, DELETE FACEBOOK MOBILE APP!!!...and twitter and anything that actively accesses the internet in the background... I know this may sound taxing but it is so worth it if yiu just make a bookmark in your browser and view it periodically than have an always active app... next if you are not in a primarily lte covered area set your phone to cdma only... go into settings and go to data usage and here you can see what is using data in the background I.e. facebook... and go there and check the restrict app box.., disable auto brightness and some have said that if you disable sprint connection manager thing you can do even more.... now that one I cannot be sure about I will post results in the coming days of what I find
Sent from my SPH-L710 using xda app-developers app

OZGBLACK said:
I have been doing a lot of research and the end result is that JB out of the box will eat your battery and yes disabling the settings under maps does in fact help a lot but there is a lot more you can do to get good life... for starters get the simple stuff out of the way, DELETE FACEBOOK MOBILE APP!!!...and twitter and anything that actively accesses the internet in the background... I know this may sound taxing but it is so worth it if yiu just make a bookmark in your browser and view it periodically than have an always active app... next if you are not in a primarily lte covered area set your phone to cdma only... go into settings and go to data usage and here you can see what is using data in the background I.e. facebook... and go there and check the restrict app box.., disable auto brightness and some have said that if you disable sprint connection manager thing you can do even more.... now that one I cannot be sure about I will post results in the coming days of what I find
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
You are pretty much correct the FB app sucks but I never really had much problems with it.
A lot of these tips though in general (not directed towards you) are stupid.
Like someone said a while ago I refuse to gimp my phone to sip a little bit more life out of it. What's the use of having a smartphone if you're not going to use it like one.
I always have high brightness unless its dark out. I broke my syncs intervals up to about 4 hours per sync and have push notifications from twitter and weather.
With those apps all I have to do is refresh when I enter the app having those syncing all the time is worthless unless you're constantly checking every 10 seconds.
I say I get fairly decent battery life granted I'm on wifi most the time and 7-8 hours with about 2 hrs screen on playing HD games youtube poweramp and my background processes.

Well in regards to the act of extending the life of your battery these are simply tips that you can utilize in the event you are someone who is out for extreme amounts of time.... I average anywhere from 13 to 17 hrs of battery life with 100% brightness, wifi 3g all of my favorite apps... instagram xda kik kindle Skype etc. And 5 to 6 hrs of screen on time. .. so these gimping tactics more than double my phones live time and doubles my life.... but hey if you can get to a charger after 8hrs by all means but for the most part I cannot until after 13 but i do in fact appreciate your incite
Sent from my SPH-L710 using xda app-developers app

Also even though you are disabling sone of these apps like google now.... you can still use it your just turning off the background nonsense
Sent from my SPH-L710 using xda app-developers app

OZGBLACK said:
Well in regards to the act of extending the life of your battery these are simply tips that you can utilize in the event you are someone who is out for extreme amounts of time.... I average anywhere from 13 to 17 hrs of battery life with 100% brightness, wifi 3g all of my favorite apps... instagram xda kik kindle Skype etc. And 5 to 6 hrs of screen on time. .. so these gimping tactics more than double my phones live time and doubles my life.... but hey if you can get to a charger after 8hrs by all means but for the most part I cannot until after 13 but i do in fact appreciate your incite
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
what rom and kernel are u using

Even with changing that setting in Maps I still am not getting the same battery life as I did with ICS. Maps is still coming up as my most used app when I check battery usage even though I rarely use it. Wonder if it may be Google Now causing Maps to keep running.

nabbed said:
What are you talking about? Did you zoom in to see screen on/awake usage? Both are about 7.5 hours of idle time.
Click to expand...
Click to collapse
Oh wow. Sorry from my phone I couldn't zoom in. I see now lol. Thought I saw 90 and 89 or something like that

I had the Maps setting turned off for a few days and also had A LOT of stuff disabled, but unfortunately my battery life (and my wife's as well) wasn't as good as ICS, and quite a bit worse actually.
Sadly, today, it looks like I figured out what the killer is:
Google Now.
This morning, 100% charged, I turned it off. My wife (who still had it on) and I were out and about together for about four hours, we both barely used out phones for that time. When we got home I checked both phones: I was at 96%, she was at 80%.
The only difference that I hadn't already accounted for:
Google Now.
So, unfortunately, it looks to me like one of the two biggest reasons for wanting JB in the first place (Butter being the other of course) turns out to be a big battery hog I don't yet know if there's maybe some setting within it that is a specific problem or if it's the whole thing in general... maybe you just need to disable a card or change an update frequency or something (I didn't touch any so I'm running whatever the defaults are), I don't know yet... but all indications are that's where the problem lies.
That, my friends, sucks.

Well since my phone has calmed down I am getting 13-16 hr easily. Brightness maxed of course and about 4-6 screen on time I will never cripple my phone. Hell I bought it so I can use not to look at. Lol thanks for the post of this though if I'm ever I. A die hard , situation I'll know what to do
Sent from my SPH-L710 using xda app-developers app

Orbiting234 said:
Even with changing that setting in Maps I still am not getting the same battery life as I did with ICS. Maps is still coming up as my most used app when I check battery usage even though I rarely use it. Wonder if it may be Google Now causing Maps to keep running.
Click to expand...
Click to collapse
Google Now uses the "Report from this device" and "Enable location history" maps location settings to determine your driving patterns so it can suggest alternative routes and report traffic delays. Disabling "Enable location history" will disable the driving pattern suggestions completely.
FWIW Settings | More settings | Mobile networks | Network mode
Changing from "CDMA" to "LTE / CDMA" has gained me better battery life. My wife also noticed the same.

(To save time, I'm cutting & pasting my post from another similar thread.)
> http://forum.xda-developers.com/showthread.php?t=1963689&page=3
"I have had my Galaxy S3 for a week now. Battery life stabilized after the initial syncing, etc. I updated to Jelly Bean v4.1.1 two days ago, and battery life didn't seem noticeably different. However, that was until today. My phone was off of the charger, around 10AM, and had < 5% charge by 4:30PM. I was very busy, so I was hardly using the phone all day. It was in my pocket or on my desk most of the time. One of the only settings I changed last night, was enabling 'Use wireless networks' and enabling 'Location and Google search' under 'Location Services' in 'Settings'. I just disabled both settings, and will see if the battery drain is any less tomorrow. Also, Google Now was off, and was never enabled on my phone. I'll try to post the results, if at all possible..."
So, for me, it seems to be Location Services may have caused my poor battery life, and was definitly not Google Now, as it was never enabled. I'll try using the phone with the settings off, and see if that changes anything...

Toney Starks said:
what rom and kernel are u using
Click to expand...
Click to collapse
Stock stock stock jellybean ota... that's it
Sent from my SPH-L710 using xda app-developers app

I do love Jelly Bean; as it is ICS only improved or enhanced. But battery life has definitely taken a hit. I can barely make it through 24 hrs. On ICS I could do a day and a half to two days with really light use. I've tried just about everything mentioned with little change. Good thing I have an extra battery. Thank you Samsung for making a phone with a user replaceable battery.
Thanks for all the ideas/suggestions anyways,
El Mono

I noticed the huge difference as well. I was walking around Chicago yesterday and not using my phone. After 4 hours I looked and my battery was at 50 %.
Sent from my GT-N8013 using XDA Premium HD app

Battery Life Question

I have happy with my battery life but only getting about 12 hours a day. And I read people getting a day and a half? That's ridiculous! I am currently running Jedi XP 8 with Perseus, I kill my apps instantly after use, use full brightness and turn off data when I'm on wifi. So what else? Thanks in advance.
Sent from my SGH-I317 using xda app-developers app

Maybe your full brightness has something to do with that.
Edit: I think this belongs in q&a s3ction.
Edit 2 : kernel overclocked?
Sent from my SAMSUNG-SGH-I317 using xda premium

Kmanblazzer said:
I have happy with my battery life but only getting about 12 hours a day. And I read people getting a day and a half? That's ridiculous! I am currently running Jedi XP 8 with Perseus, I kill my apps instantly after use, use full brightness and turn off data when I'm on wifi. So what else? Thanks in advance.
Sent from my SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
Screen brightness es are usually the ones killing the battery.
Full screen brightness is probably the reason why

Kmanblazzer said:
I have happy with my battery life but only getting about 12 hours a day. And I read people getting a day and a half? That's ridiculous! I am currently running Jedi XP 8 with Perseus, I kill my apps instantly after use, use full brightness and turn off data when I'm on wifi. So what else? Thanks in advance.
Sent from my SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
Absolutely. That screen brightness will kill it every time..
Current Devices: At&t Samsung Galaxy Note, Verizon Samsung Galaxy Nexus, Asus Google Nexus 7 Super Tablet
Current Roms: Jedi XP 9 (Note 2), AOKP (Galaxy Nexus), Nexus 7 Stock

z28tovette said:
Maybe your full brightness has something to do with that.
Edit: I think this belongs in q&a s3ction.
Edit 2 : kernel overclocked?
Sent from my SAMSUNG-SGH-I317 using xda premium
Click to expand...
Click to collapse
Yes the kernel over clocks
Sent from my SGH-I317 using xda app-developers app

Kmanblazzer said:
Yes the kernel over clocks
Sent from my SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
Kernel oc'd can drain battery aswell.
Sent from my SAMSUNG-SGH-I317 using xda premium

Coming from someone who LOVES bright screens... unless you're nearly blind, there's absolutely no reason why anyone needs to constantly be running their Note 2's screen at full brightness. Auto-brightness is extremely efficient, and if you don't like how the phones native auto-brightness feature manages things, there's many third party apps which can do it better. Full brightness will kill anything on a battery, from a laptop to a cell phone.

Very true ^^^^
Sent from my SAMSUNG-SGH-I317 using xda premium

Bsmith0731 said:
Absolutely. That screen brightness will kill it every time..
Current Devices: At&t Samsung Galaxy Note, Verizon Samsung Galaxy Nexus, Asus Google Nexus 7 Super Tablet
Current Roms: Jedi XP 9 (Note 2), AOKP (Galaxy Nexus), Nexus 7 Stock
Click to expand...
Click to collapse
This means nothing, you have the freaking phone in airplane mode, of course your phone is going to last forever like that

walie said:
This means nothing, you have the freaking phone in airplane mode, of course your phone is going to last forever like that
Click to expand...
Click to collapse
It means everything. I'm trying all methods..
Current Devices: At&t Samsung Galaxy Note, Verizon Samsung Galaxy Nexus, Asus Google Nexus 7 Super Tablet
Current Roms: Jedi XP 9 (Note 2), AOKP (Galaxy Nexus), Nexus 7 Stock

Full brightness can cut your screen on time in half. There is no reason to turn off data when connecting to wifi, it's already off. This is android, constantly killing apps will waste your battery even more.

simonxliu said:
Full brightness can cut your screen on time in half. There is no reason to turn off data when connecting to wifi, it's already off. This is android, constantly killing apps will waste your battery even more.
Click to expand...
Click to collapse
Why is that killing apps right after use drains your battery? I have come from iPhone so I thought it would just increase it. Also, since apps are running in the background why wouldn't background apps killing your battery? And if I shouldn't kill them right after use, when should I kill them?
Sent from my SGH-I317 using xda app-developers app

I get a day and a half on full brightness... But not much screen on time.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

Kmanblazzer said:
Why is that killing apps right after use drains your battery? I have come from iPhone so I thought it would just increase it. Also, since apps are running in the background why wouldn't background apps killing your battery? And if I shouldn't kill them right after use, when should I kill them?
Sent from my SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
Yeah no clue why he said that. Clearing your ram before you turn off screen increases your battery by a lot.
______________________________________
Phones: iPhone 4 - > iPhone 5 - > Note 2 (Always on AT&T)
ROM: International N7105XXDLL4 by miscom
Kernal: Perseus alpha30.1
A lot of bloatware removed.
Screen on time after normal charge: 7-8 hours always.

i'm very pleased with battery life on my device. i'm using a deodexed, rooted stock ATT 4.1.2 ROM, with stock kernel, Power Mode off, brightness set to about 40% and screen mode set to Natural. i don't use task killers, battery managing apps, etc. my usage is mainly email, calls, web surfing and listening to music (when i have time).
on an average work day, i can get 16-20 hours per charge with 6-9 hours screen time, about 150 emails (4 exchange accounts all set to push 24/7) and 35-90 minutes in phone calls. at the end of my average day i'll have 15-25% battery left before it's on the charger again. there are days when my usage is above average and battery life will be lower. fortunately, for me, i have wifi available and strong phone signals where i work. the pictures below are an example of an average workday: 15 hours, with 8 hrs screen time, 62 minutes of call time and there's 31% battery left. most of the screen time was related to reading/replying to emails, web browsing and texts.
the OP doesn't mention their expectations beyond getting 12 hrs on a single charge and how he/she uses the device on a daily basis. that will surely factor into their respective experience.

Kmanblazzer said:
Why is that killing apps right after use drains your battery? I have come from iPhone so I thought it would just increase it. Also, since apps are running in the background why wouldn't background apps killing your battery? And if I shouldn't kill them right after use, when should I kill them?
Sent from my SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
Background apps aren't necessarily doing anything. This isnt windows, Android is unix based, unused ram is wasted ram. The system loads apps into the ram so you can switch back and forth easily.
An app isnt constantly doing stuff in the background unless it is intended (like utorrent or music), or the app is badly made(I'm looking at you weather channel). Your ram is always on, no matter how full it is it will always use the same amount of power, when you're in deep sleep your apps are frozen and not actively running. Killing all your apps just means the next time you use the app it has to be read from internal storage and loaded into the ram instead of already being there in the first place, this actually uses more power. Some apps wont even stay closed and will immediately reopen anyways.
Tl; dr Android has ways of freezing apps when not in use, killing apps just means they have to be loaded again on next use which uses power. Some apps are broken and wake up all the time, use betterbatterystats to help find them.
The only solution is to use something like betterbatterystats and find the crap apps that are breaking deep sleep.

simonxliu said:
Background apps aren't necessarily doing anything. This isnt windows, Android is unix based, unused ram is wasted ram. The system loads apps into the ram so you can switch back and forth easily.
An app isnt constantly doing stuff in the background unless it is intended (like utorrent or music), or the app is badly made(I'm looking at you weather channel). Your ram is always on, no matter how full it is it will always use the same amount of power, when you're in deep sleep your apps are frozen and not actively running. Killing all your apps just means the next time you use the app it has to be read from internal storage and loaded into the ram instead of already being there in the first place, this actually uses more power. Some apps wont even stay closed and will immediately reopen anyways.
Tl; dr Android has ways of freezing apps when not in use, killing apps just means they have to be loaded again on next use which uses power. Some apps are broken and wake up all the time, use betterbatterystats to help find them.
The only solution is to use something like betterbatterystats and find the crap apps that are breaking deep sleep.
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Thanks, this helps a lot!
Sent from my SGH-I317 using xda app-developers app

Dr. Evo said:
Coming from someone who LOVES bright screens... unless you're nearly blind, there's absolutely no reason why anyone needs to constantly be running their Note 2's screen at full brightness. Auto-brightness is extremely efficient, and if you don't like how the phones native auto-brightness feature manages things, there's many third party apps which can do it better. Full brightness will kill anything on a battery, from a laptop to a cell phone.
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Ive tried using the Auto feature but when I enable it, it dims the screen so I can hardly see it. Ive seen screenshots of other users screens with the 'Auto' enabled and they are much brighter......Am I missing another setting somewhere else?

Simon. You are absolutely correct..
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Chasoscar said:
Ive tried using the Auto feature but when I enable it, it dims the screen so I can hardly see it. Ive seen screenshots of other users screens with the 'Auto' enabled and they are much brighter......Am I missing another setting somewhere else?
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As I said, there are all sort of third party apps out there, that manage screen brightness and most do it better than the native feature. This is the one I use... although I have the paid version. Best auto-brightness I've ever used on any phone...
GOOGLE PLAY: Lux Auto Brightness - Free

Need help troubleshooting battery drain issue

Hello guys.
I'm stumped at a battery drain issue that my wife's been having on her S3.
After doing my own standard tests like BBS, disabling bloat, checking running services, etc. , the only thing that caught my eye was that her device stays at high cpu (900mhz range) for way too long. When checking the cpu stats usung System Panel, I noticed that her cpu never dips below 500mhz, but cpu usage is low (3% or so).
How do I find out what's triggering the cpu clock to jump?
She's unrooted, which I know doesn't help with troubleshooting, but I don't want to mess around with her phone.
I should add that she has very few third party apps and they are all big name apps like evernote, Dropbox and Sugarsync.
Any help would be appreciated.
Sent from my Galaxy Note 2 using Tapatalk 2

Drop box v2 onwards has an auto upload feature for any pics/videos you take. Try disabling that or moving to 1.x versions. I realized this when my wife's db account said it was approaching limit trying to upload her HD videos.
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diablo009 said:
Drop box v2 onwards has an auto upload feature for any pics/videos you take. Try disabling that or moving to 1.x versions. I realized this when my wife's db account said it was approaching limit trying to upload her HD videos.
Sent from my SAMSUNG-SGH-I747 using xda premium
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Thanks. Her Dropbox is set to never sync. She has Sugarsync for backing up photos and videos, but that's only when charging.
The problem isn't cpu usage, but the cpu clock speed never slows down and doesn't deep sleep the way it should.
Sent from my Galaxy Note 2 using Tapatalk 2

how recent is this issue?
when did she update to 4.1.1?

xBeerdroiDx said:
how recent is this issue?
when did she update to 4.1.1?
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She got the phone over two months ago and all updates were done then. She's had great battery life, but has been complaining about battery life for the last two weeks or so. She's been using a pebble watch with it, but I'm quickly having doubts that the watch is the cause of this drain.
Even now, I've had her phone sitting next to me and deep sleep is only 74%.
Sent from my iPad 4th gen using Tapatalk 2