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Terrible battery life, please help!

Hello I am new to this forum, I just got the Samsung galaxy s 4g this Wednesday and I was wondering if anyone else was having battery issues. Right now I have my phone set to minimum brightness, auto sync off, black bckground and juice defender on. So I don't understand why am I getting only about 3 hours of battery life when all I'm doing most of the time is surfing the web(this forum) and facebook. I even get better battery life from my dads vibrant which is completely stock, has auto sync on, no juice defender, and screen brightness set to 50%. From reading the stats of both phones, the vibrant 4g is supposed to have a slightly better battery. I also don't understand why if the screen is at the minimum it still takes up 94% of the battery whereas on my dads vibrant 50% screen brightness takes up 30%. Is there anything I can do? Will wiping the battery stats help? If so how do I do that from a stock unrooted vibrant?
Sent from my SGH-T959V using XDA App

Check your notifications settings. I know that Samsung's contacts integration with social networks takes a big toll on the battery, hence why I've disabled it. Also, disable T-Mobile's Contact Backup Sync, just use Google's contacts integration.

Thanks for helping, but yeah I have those disabled already.
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icy56 said:
Thanks for helping, but yeah I have those disabled already.
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No, I charged mine this morning at 630AM, and I have been playing with it all day. It is currently 610PM, and I am at 60% still. Seems pretty good to me.

troby1986 said:
No, I charged mine this morning at 630AM, and I have been playing with it all day. It is currently 610PM, and I am at 60% still. Seems pretty good to me.
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Click to collapse
Wow thats much better than what I have been getting, have you changed any settings that might have increased the battery life for your phone?
Sent from my SGH-T959V using XDA App

Does the trick to fully discharge and recharge 3 times work with these batteries? According the the Li-on technology this is not supposed to be necessary but I've heard stories in the forums of folks getting great battery life on other phones after doing this. Many people also say their batteries work a lot better after a week of use (supposedly after "training" them as well.)
I believe the G2 is clocked down for this reason. You could try CPU-set app, clocking down to 500-800mhz when not gaming.
Anyone tried these tricks?

gggirlgeek said:
Does the trick to fully discharge and recharge 3 times work with these batteries? According the the Li-on technology this is not supposed to be necessary but I've heard stories in the forums of folks getting great battery life on other phones after doing this. Many people also say their batteries work a lot better after a week of use (supposedly after "training" them as well.)
I believe the G2 is clocked down for this reason. You could try CPU-set app, clocking down to 500-800mhz when not gaming.
Anyone tried these tricks?
Click to expand...
Click to collapse
Will ill try to cycle charge the vibrant and use it for a week, and ill try out cpu set. if this doesn't improve I'm definitely returning this phone. I had soo much expectation for this because I have seen people getting up to 24 hours. I can't even get halfway through the day barely using the phone.
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Thats weird... I unplugged at 9:30 used it moderately untill 12:30 at which time i turned brightness to max and watched the intire incpetion movie and watched an episode of kitchen nightmares and ended up at 56%.
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mavictb said:
Thats weird... I unplugged at 9:30 used it moderately untill 12:30 at which time i turned brightness to max and watched the intire incpetion movie and watched an episode of kitchen nightmares and ended up at 56%.
Sent from my SGH-T959V using XDA App
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Yeah there's gotta be something wrong with my phone, after watching halfway through inception from a full charge and at 0% brightness I had 30% battery left.
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I'm also struggling to make it through the day. I check Facebook / xda on occasion and text moderately, Gps off, notifications and auto sync off, display set to 0% with an all black background, even 3g off in areas where its spotty... I don't remember the vibrant being this bad...
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did you guys do a full battery break in? I charged my phone to 100% drained it till it died charged it to 100% again with the power off then drained till it died again... I have great battery life.

What is your usage like? Im breaking in my battery again today.
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rando191 said:
What is your usage like? Im breaking in my battery again today.
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Auto brightness on GPS on sync on 20 texts 30 min playing games 20 min on Facebook now on xda app for 15 min. And standby for 3 hours... currently at 80%. Also have hepatic feedback on the Mtm gingergread keyboard. If that matters.
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I got my replacement 4g today. Hopefully ill have better results. I have a question for those of you that are getting really good battery life, are you running juice defender or something similar in the background? Maybe that's a factor in why I've been getting terrible battery.
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Im having the same issue with battery life.. for me its a deal breaker.. I use my phone pretty heavily for keeping up with email and a little web browsing as well as talking quite a bit.. My iPhone 3Gs lasted me all day of heavy use and with the SGS4G I have to charge the damn thing at least once a day with light usage and if I have to be on the phone a lot then its twice a day.. Not acceptable at all...
Thats with wifi and gps disabled..
On the 3Gs I had wifi, bluetooth and the gps running all the damn time...

Took my phone off charge at 6:30 this morning haven't put it on charge yet at 88% never had this much juice with the nexus one.
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I'm not having any issues with battery life or heating. I use wifi teather most of the day and I'm getting to use it all day without issue. I did cycle my battery 4 times already just in case it matters. FYI

The batteries that our phone uses DOES NOT require u to cycle the battery. In fact, doing so will harm your battery. To avoid damage to your battery always charge ur phone when u r at <15% battery level. Trust me I thought the same until I did the research. I will post more info when I get on my PC later.
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**EDIT**
More information:
http://www.goodandevo.net/2010/06/does-the-htc-evo-4g-battery-need-to-be-primedconditioned.html
http://batteryuniversity.com/parttwo-36.htm

I just bought a Galaxy S 4G on wednesday. First android device coming from iphone 3G. I'm still trying to figure out the best way to preserve the battery life.
I took it off the charger at 6:30am and the battery was at about 2% at 8:30pm.
I haven't rooted the phone yet to remove some of the bloatware that comes pre-installed.
I've got email accounts synching, brightness set at about 10% w/ a static wallpaper. Played about an hour of angrybirds throughout the day and didn't really do any web browsing with a few phones calls. I mean 14 hours is decent but from what I've read there are plenty of people getting a full day of use and still have 50% battery left.
I guess once the battery fully charges I'll put inception on, turn off syncing and try a few other things.
So I guess I said all that to say this, my battery life isn't great but it's not downright horrible either. Any suggestions would be much appreciated.
And yes I'll continue browsing all the forums to see what else I can find.
Edit:
Played through half of Inception in airplane mode, brightness at minimum. I dropped from 93% to 80% in an hour and a half. Not too shabby.
Also created a shortcut to toggle between 4G modes and Edge. I know 4G is going to be a pretty big drain so I'll see how much that helps.
I'll keep tweaking it.

this is completely true and if you read the manual on page 13- h t t p:// downloadcenter . samsung . com/content/UM/201102/20110224044646930/T959_Galaxy_S_4G_English_User_Manual.pdf it says that
"• Do not wait until your battery is completely depleted before charging
your device. Repeating this process of a complete discharge and
recharge can over time reduce the storage capacity of any battery."
right now my phone is at 23% battery level with up time of 46:46:40 hrs/mins/secs. with skype calling (around 10 minutes), text messaging, browsing the net (for around 5 minutes about 6 times a day), and talking on the phone (around 15 minutes)
the settings i did:
1. took a picture with my finger blocking the camera to get pitch black picture and set that as my background and deleted all the shortcut icons (i short, i only have a blank screen with the only 4 icons down below)
2. changed the brightness settings to 2 clicks to the right from 0% brightness (or you can lower your brightness all the way down during the night, and 2 clicks away during the day, this will save you more)
3. disabled haptic feedbacks and audible touchtones, selections, and screen lock sounds
4. disabled animations
5. disabled background data and syncing when not in use
6. disabled packet data (3g), wifi, and gps when not in use
the last two are the biggest settings that made my battery last longer.
7. i only charge my phone when it gets to 20% and the manual recommends not to use the phone while charging
i hope this helps.
and yes it is recommended to charge your battery to 100% before you turn on your phone for the first time and this is also stated on the manual.
one more thing, don't forget to set your browser's brightness setting as well
Toshinobu said:
The batteries that our phone uses DOES NOT require u to cycle the battery. In fact, doing so will harm your battery. To avoid damage to your battery always charge ur phone when u r at <15% battery level. Trust me I thought the same until I did the research. I will post more info when I get on my PC later.
Sent from my SGH-T959V using XDA App
**EDIT**
More information:
http://www.goodandevo.net/2010/06/does-the-htc-evo-4g-battery-need-to-be-primedconditioned.html
http://batteryuniversity.com/parttwo-36.htm
Click to expand...
Click to collapse

It's the best battery saver I have tried.

Hi all,
Just want to share a battery saver app which works really well on my charge. I used to have 10-12 hrs normal usage, now I have 20hrs with left over at the end of the day. The only feature that you have to look out for is "enable cpu saving", it may work for you, but for me this put my phone in so deep sleep that it never wake up. But of course just pull battery, reboot then disabled the feature. it made by a big Chinese internet security company and "melvinchng" is nice enough to translate it to English for us. All credits go to him. Hope you all like it. Cheers!
http://forum.xda-developers.com/showthread.php?t=1685816

Better than Antutu?
Sent from my SCH-I510 using xda app-developers app

cnoevl21 said:
Better than Antutu?
Sent from my SCH-I510 using xda app-developers app
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Click to collapse
For me it is, but the best bet is try it for yourself and let us know your opinion. You have nothing to lose.

Here is screen shots of mine. I will post a few more later.

If u want to save battery just turn off 4g under wireless and networks. My 3g only will last 1.5 days of moderate to lighter use.
Sent from my SCH-I510 using xda app-developers app

buhohitr said:
Here is screen shots of mine. I will post a few more later.
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I may be missing something, but it looks like all it is doing is blocking mobile data periodically, right? mobile data is the biggest drainer on battery performance (in my experience). however, I don't want to have it off, even for a minute - as if I misplace my phone, I'll need mobile data to be on in order to find my phone via the Lookout app...

jco23 said:
I may be missing something, but it looks like all it is doing is blocking mobile data periodically, right? mobile data is the biggest drainer on battery performance (in my experience). however, I don't want to have it off, even for a minute - as if I misplace my phone, I'll need mobile data to be on in order to find my phone via the Lookout app...
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Click to collapse
It doesn't unless you instruct it to do so. If you toggle wifi/4g on only when needed then you should save even more. Did you see Vulkano? that video streaming over 4g. If I have wifi/4g on all the time, with my normal usage, I can have the phone unplugged at 8am to 10pm and still have about 30% left. Of course my normal usage maybe different from yours. If I have your phone in standby (screen off), I got 10hrs and the phone is at 91%.(about 1% per hrs). I suggest to find out if this app really help or not, just try it out, you have nothing to loose.

buhohitr said:
It doesn't unless you instruct it to do so. If you toggle wifi/4g on only when needed then you should save even more. Did you see Vulkano? that video streaming over 4g. If I have wifi/4g on all the time, with my normal usage, I can have the phone unplugged at 8am to 10pm and still have about 30% left. Of course my normal usage maybe different from yours. If I have your phone in standby (screen off), I got 10hrs and the phone is at 91%.(about 1% per hrs). I suggest to find out if this app really help or not, just try it out, you have nothing to loose.
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Click to collapse
thanks, I will.
I know that in standby mode with wifi on and 4G off, my battery drains about 1% per hour. with 4G on (no wifi connection), ~5% per hour.
once factoring in some moderate usage, that drops down quite significantly.

OK, as promissed, here are pictures after 11hrs. Noticed my screen time is more than 50%.

Looks good. But will need to see a comparison to without the app.
But I did download and install it. Will see how we do tomorrow.
tappin' that....

jco23 said:
Looks good. But will need to see a comparison to without the app.
But I did download and install it. Will see how we do tomorrow.
tappin' that....
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Haha, seems like to need a lot of lucks!

buhohitr said:
OK, as promissed, here are pictures after 11hrs. Noticed my screen time is more than 50%.
Click to expand...
Click to collapse
Actually, you didn't include your screen on time at all. Your screen's percentage of battery use was over 50%, though. Including your actual screen on time would help when comparing battery usage.

well, this app was a major fail for me. after 4 hours, down to 61%. it blocks what I need (google syncs such as mail, calendar, photos, drive, music, etc). so if someone sends me an appointment, I will not receive it.

I don't have any problem with Juice defender. But I guess it isn't for everyone. I just use it so I don't have to worry about manually switching back and forth between 4g and wifi as I go around throughout the day.
I turned off 4g recently to try to improve my horrible battery life (just got 4g in my area too ). It wasn't a huge difference but what really changed it for me was to stop overclocking. I really don't see much lag anyways and it didn't help with the apps I wanted so fixes fine for me.

Tazer2death said:
I don't have any problem with Juice defender. But I guess it isn't for everyone. I just use it so I don't have to worry about manually switching back and forth between 4g and wifi as I go around throughout the day.
I turned off 4g recently to try to improve my horrible battery life (just got 4g in my area too ). It wasn't a huge difference but what really changed it for me was to stop overclocking. I really don't see much lag anyways and it didn't help with the apps I wanted so fixes fine for me.
Click to expand...
Click to collapse
regarding Wifi, I have found that editing the build.prop file to adjust the wifi interval scan helps dramatically. I changed my 1800 (once every 30 minutes). now I leave wifi and 4G on all the time with no significant battery drainage.
but I have found that these so-called battery saving apps just simply cut off mobile data or "auto-sync".

This app was a huge fail for me. Back to the antutu battery saver i go.
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cnoevl21 said:
This app was a huge fail for me. Back to the antutu battery saver i go.
Sent from my SCH-I510 using xda app-developers app
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Click to collapse
antutu was a fail for me too. so was "easy battery saver"
trying out juice defender again. I think I'm okay with mobile data turning on/off periodically. JD seems to do this nicely. I also like how JD turns on mobile data when the screen is unlocked.
however, I'm thinking that this could be done via a build.prop edit of some kind. essentially, what I would like to do is:
if WiFi is disconnected and screen is off/locked, turn on mobile data for 1 minute every 30 minutes, if WiFi is connected, turn off mobile data and keep wifi connection.

"Hypermiler" (Battery Life) Tips

This is a little bit of a boast, I guess you could say... but also educational in a way.
This is my most recent battery life. I found that when I posted my screenshots, people think they are faked in some way. (Posted it here and other GS3 forums) They are not. I am using the stock battery my phone came with. NOT an extended battery. And you can see from the battery graph that the phone was not charged. I guess this is to show that you can use your phone heavily, and still get amazing battery life.
I am using the stock jellybean leak. Not rooted or unlocked.
This is everything I have done to get good battery life.
-I turned the LED touch lights off (I don't like them, they're so bright)
-I have all vibrations off. My phone does not ever vibrate.
-I have power save on.
-I have S-Voice "wake command" off.
-I have motion control disabled.
-I am almost always on wifi (work & home)
-When I am on wifi, I turn mobile data off.
-When I am going to bed, I put my phone in airplane mode.
-I rely heavily on the task manager, I clear my open windows and under the "RAM" tab I clear memory. Probably once an hour.
-I have my sync OFF. I check my email manually.
-Auto brightness.
-I never partially charge. I let my battery go all the way down to 1% then I charge it to 100%. Always.
-Always have a dark background, if possible.
Thats everything. Mind you, I didn't make or receive any phone calls on this cycle. But I did use my phone, as you can see I didn't just let it sit around. Device idle was like 3%?
Anyone else a "hypermiler" like me? I don't get this much screen time every time, it ranges from 5-7. I've gotten more than this and I've gotten less.
Hope this can help even if it's only a little.
Sent from my SCH-I535 using xda app-developers app

josh995 said:
-I rely heavily on the task manager, I clear my open windows and under the "RAM" tab I clear memory. Probably once an hour.
-Auto brightness.
-I never partially charge. I let my battery go all the way down to 1% then I charge it to 100%. Always.
Sent from my SCH-I535 using xda app-developers app
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Click to collapse
-Clearing the ram too much actually drains the battery more because certain apps will have to auto start again every time you clear memory
-Keeping it at around 0-30% all the time should save you more.(I can still see my screen during the day at 30%)
-That doesn't do anything.

josh995 said:
-When I am going to bed, I put my phone in airplane mode.
-I rely heavily on the task manager, I clear my open windows and under the "RAM" tab I clear memory. Probably once an hour.
-Auto brightness.
-I never partially charge. I let my battery go all the way down to 1% then I charge it to 100%. Always.
Click to expand...
Click to collapse
-Are there no A/C outlets in your bedroom?
-What the previous guy said, this is a stupid thing to do. Java was designed around efficient use of resources, and restarting running apps (which would happen, unless you have them removed entirely) would use more processing power than you had saved by not having the tasks running in the first place.
-Using Auto is causing the system to periodically poll the light sensor, draining more battery than used otherwise.
-This is how you kill Li-Ion batteries (one way, at least). The whole spiel about discharging fully, THEN charging fully or the battery will have some sort of "memory" of capacity less than actual capacity is how Ni-Cad rechargables work, not Li-Ions. Li-Ion batteries are the opposite. For superior life, keep them topped up as much as possible. FYI
I hope THIS helped, more than a little.

There are plenty of outlets in my room. Lol I just don't need to use them that often as you can see also I hate getting calls and messages in the middle of the night but I use my phone as an alarm sometimes so airplane mode just seems convenient.
This is just what I do. I mean, some of the things I do may not help at all. But this is what I do with Android phones and I've always gotten really good battery life. I've always, always gone down to 1% then charged up to 100% and I've never had a battery go bad on me. Then again I only ever keep a phone for 1 year. I do know that these batteries don't have the memory problem, I just can't bring myself to not fully discharge or charge. I have mild OCD, for real. Little things like that brother me
I'll play with backlighting to see what that does for me.
I've gotta be doing something right. Idk about the task manager, I've just always liked not having programs running if I don't need them to be. I know they arent "running" but it just gives me peace of mind, I guess.
Thanks for the recommendations I will try them.
Sent from my SCH-I535 using xda app-developers app

josh995 said:
There are plenty of outlets in my room. Lol I just don't need to use them that often as you can see also I hate getting calls and messages in the middle of the night but I use my phone as an alarm sometimes so airplane mode just seems convenient.
This is just what I do. I mean, some of the things I do may not help at all. But this is what I do with Android phones and I've always gotten really good battery life. I've always, always gone down to 1% then charged up to 100% and I've never had a battery go bad on me. Then again I only ever keep a phone for 1 year.
I'll play with backlighting to see what that does for me.
I've gotta be doing something right. Idk about the task manager, I've just always liked not having programs running if I don't need them to be. I know they arent "running" but it just gives me peace of mind, I guess.
Thanks for the recommendations I will try them.
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
You getting really good battery life =/= you getting the best battery life possible.
I have pushed ~2 days of battery life without charging many times on my GS3 (with all the bells and whistles running, just mobile data turned off when i'm not commuting), i just don't have a reliable measurement because:
1. I'm flashing mods/roms/kernels/whatever multiple times per week, and
2. I usually charge my phone when it's convenient, which is fairly often.

charlieg90 said:
You getting really good battery life =/= you getting the best battery life possible.
I have pushed ~2 days of battery life without charging many times on my GS3 (with all the bells and whistles running, just mobile data turned off when i'm not commuting), i just don't have a reliable measurement because:
1. I'm flashing mods/roms/kernels/whatever multiple times per week, and
2. I usually charge my phone when it's convenient, which is fairly often.
Click to expand...
Click to collapse
I stopped flashing because of my OCD. I mean, I'm not crazy but it causes perfection issues and all the ROMs I was flashing had glitches here and there and Idk if you've known anyone with OCD but with the perfection issue, those glitches were all I could think about. So there went flashing. Lol.
Also comes into play with the charging thing. You seem knowledgeable in what you said but even though you said keeping it topped up is best, in my mind, that's destroying my battery. Lol. I really do appreciate your info though.
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josh995 said:
my OCD
Click to expand...
Click to collapse
I'm glad you said it, so that I didn't have to. :silly:
I read your post and the first thing that came to mind was, "there is medication for that, you know.":laugh:

Here's my .02. My battery never lasts that long. Not even close. I'd feel disappointed if it did. I bought my gsiii with the intent of gobbling up unlimited data and using the oc'd processor to run apps till the phone is so hot I have to set it down. I've burned up almost 6gigs of data since the 7th. I get around 4 hours of screen on time most generally. I also throw it on a charger whenever I have the chance. My battery rarely dips below 50%. Like others have said, full discharge cycles are for ni-cad batteries. Li-ion doesn't benefit. Good battery life for me is the lg flip phone we have on a diff line that lasts a couple weeks.
Sent from my SCH-I535 using Xparent ICS Tapatalk 2

josh995 said:
I stopped flashing because of my OCD. I mean, I'm not crazy but it causes perfection issues and all the ROMs I was flashing had glitches here and there and Idk if you've known anyone with OCD but with the perfection issue, those glitches were all I could think about. So there went flashing. Lol.
Also comes into play with the charging thing. You seem knowledgeable in what you said but even though you said keeping it topped up is best, in my mind, that's destroying my battery. Lol. I really do appreciate your info though.
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
Okay, okay, as long as you admit it... I'll stop being a snarky jerk. I'm totally the same way though. Perfectionist to the core.

It's a very bad idea to let the battery go down to 1% regularly, lithium batteries should be charged more often for better life and more cycles

Sorry but I still just don't believe 7 hours of screen on time. 4 is above average even amazing screen on time for this phone and stock battery. I suppose there is the possibility of using 0 percent brightness, or even lux brightness or something similar to get the brightness even lower.
You said you use auto brightness, I'm sorry I just don't buy it.
People with the extended batteries are getting 7 hours of screen on time not stock batteries.
7 hours of screen on time is literally double almost every other phone on the market with stock batteries. I really fail to see how having minimum usage and a high performing rom will get you double screen on time.
Edit: with that said, in my current situation I will never have wifi access plus I tether a lot so I really have yet to personally see screen on time since I rooted. Before root and stock I got about 3.5 of screen on time.
Not trying to be a douche or anything just very curious about how 7 hours comes about.
Sent from my SCH-I535 using Tapatalk 2

bond32 said:
Sorry but I still just don't believe 7 hours of screen on time. 4 is above average even amazing screen on time for this phone and stock battery. I suppose there is the possibility of using 0 percent brightness, or even lux brightness or something similar to get the brightness even lower.
You said you use auto brightness, I'm sorry I just don't buy it.
People with the extended batteries are getting 7 hours of screen on time not stock batteries.
7 hours of screen on time is literally double almost every other phone on the market with stock batteries. I really fail to see how having minimum usage and a high performing rom will get you double screen on time.
Edit: with that said, in my current situation I will never have wifi access plus I tether a lot so I really have yet to personally see screen on time since I rooted. Before root and stock I got about 3.5 of screen on time.
Not trying to be a douche or anything just very curious about how 7 hours comes about.
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
you dont get 7 hours because you are not doing what op did for perfection, and you just like other "4 hour" guys in this thread. I can confirm 7 hours usage is totally possible and what left can support one day idle time when you turn off data etc. Iusually dont do that because I like my phone work at full functionality, but I also like tinkering around to keep maximum use of juice, by eliminating wake locks and autostart.
killing background helps sometimes because some stupid apps keeping using cpu after backgrounded. op go and get a iphone, its perfect for OCD since it can get zero unwanted background activity, amazing idle time and stable usage with relatively easier configuration and tweaking.
1% is NO. 1 battery killer, heat is NO. 2, top up at 100% is NO. 3. Li based battery is at best 40%. but plaese its just a phone, charge and use anytime you want. phone outdated way earlier than battery.
Sent from my SCH-I535 using Tapatalk 2

generalmilk said:
you dont get 7 hours because you are not doing what op did for perfection, and you just like other "4 hour" guys in this thread. I can confirm 7 hours usage is totally possible and what left can support one day idle time when you turn off data etc. Iusually dont do that because I like my phone work at full functionality, but I also like tinkering around to keep maximum use of juice, by eliminating wake locks and autostart.
killing background helps sometimes because some stupid apps keeping using cpu after backgrounded. op go and get a iphone, its perfect for OCD since it can get zero unwanted background activity, amazing idle time and stable usage with relatively easier configuration and tweaking.
1% is NO. 1 battery killer, heat is NO. 2, top up at 100% is NO. 3. Li based battery is at best 40%. but plaese its just a phone, charge and use anytime you want. phone outdated way earlier than battery.
Sent from my SCH-I535 using Tapatalk 2
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Click to collapse
While I understand what you're saying I think you misread my post. I was strickly referring to the screen on time which 7 hours of screen on time with stock battery is inconceivable. 4 is about the most you would normally see.
7 hours of USAGE is common.
Sent from my A500 using Tapatalk 2

Well I mean. You don't have to believe me. I mean I have nothing to offer but my word. I do use auto brightness. But because of the suggestion I'll probably set it to manual and see what that does.
I got 7 hours screen on time with the stock battery. The battery says "3.8 v li-ion battery"
I've gotten more than this is the past but I've also gotten less.
Like I said you don't have to believe me but... I'm using the stock battery.
And to the poster who mentioned to get an iPhone - I have one for my business line
Sent from my SCH-I535 using xda app-developers app

battery statistics are poor statistics in general. there are too many variables. luckily we have removeable batteries if we need mroe juice.
heres some postings to add to the mix
put my phone through the paces with fantasy football.
held up pretty well. stock battery mind you. on pace for nearly 8 hrs of on screen time. This isnt with typical use though... With typical use I can get 20hrs and 5-6 hrs of screen time. I thought anywhere from 4-6 hours of on screen time was what people were suppposed to be getting.

Yeah we all use our phone differently. I rarely actually talk on the phone with my GS3 because I use my iPhone for that. But everything else I do on my GS3, reading news, some browsing, xda.
I just thought I'd share what I do for people that may want to get better battery life.
Sent from my SCH-I535 using xda app-developers app

bond32 said:
While I understand what you're saying I think you misread my post. I was strickly referring to the screen on time which 7 hours of screen on time with stock battery is inconceivable. 4 is about the most you would normally see.
7 hours of USAGE is common.
Sent from my A500 using Tapatalk 2
Click to expand...
Click to collapse
Then I shouldn't use the word "usage". I meant 7 hours screen on time. Sometimes I got 8 or more, but only use it continuously after charging, no idle time.
---------- Post added at 12:10 PM ---------- Previous post was at 11:58 AM ----------
josh995 said:
Yeah we all use our phone differently. I rarely actually talk on the phone with my GS3 because I use my iPhone for that. But everything else I do on my GS3, reading news, some browsing, xda.
I just thought I'd share what I do for people that may want to get better battery life.
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
Yet that involves turning off data. IMO the smartphone should always stay online. In my experience, iPhone can get constant -4 ~ -5ma juice flow during idle even with data (2G) and all the push notifications on, which are the only things I want for stay online. I feel its hard to get similar result on my GS3 though.

generalmilk said:
Yet that involves turning off data. IMO the smartphone should always stay online. In my experience, iPhone can get constant -4 ~ -5ma juice flow during idle even with data (2G) and all the push notifications on, which are the only things I want for stay online. I feel its hard to get similar result on my GS3 though.
Click to expand...
Click to collapse
I'm always online, whether it's wi-fi or 4G. Luckily I have wi-fi at home and at work.
Like, literally as I'm walking out the door of my house, I turn on my mobile data, and when I get to work I turn it off. When I'm leaving work I turn mobile data back on and when I get home I turn it off.

josh995 said:
I'm always online, whether it's wi-fi or 4G. Luckily I have wi-fi at home and at work.
Like, literally as I'm walking out the door of my house, I turn on my mobile data, and when I get to work I turn it off. When I'm leaving work I turn mobile data back on and when I get home I turn it off.
Click to expand...
Click to collapse
what you did is pointless. If you leave data on, data is not connected when wifi is connected, and it will connect automatically when no wifi connection.

generalmilk said:
what you did is pointless. If you leave data on, data is not connected when wifi is connected, and it will connect automatically when no wifi connection.
Click to expand...
Click to collapse
It's not pointless to me. As I said a few posts before... I have OCD, obsessive compulsive disorder. Things like this affect me. I know that being connected to Wi-Fi that data is not connected, but in my brain, it's as if something is telling me that because my data toggle is on, it's running.
I really can't help it.
Sent from my SCH-I535 using xda app-developers app

Are there any others s4 owners out there noticing BAD battery life?

I've seen a couple threads praising their s4s for how long the battery life and in one case how much it flatlines while it's idle.
Since I've had mine , I've noticed the opposite. Using it very casually throughout the day with some light texting it'll drain probably about 30-40% while doing very little of anything.
But the part that stands out the most is when my s4 is idle overnight , it'll drop about 17-20% while others have reported seeing very little loss.
Has anyone else expierenced poor battery life? Is this normal for my s4 to do?
The only features I have turned on are; Wifi, Sound, Mobile Data, and Sync.

MentalToast said:
I've seen a couple threads praising their s4s for how long the battery life and in one case how much it flatlines while it's idle.
Since I've had mine , I've noticed the opposite. Using it very casually throughout the day with some light texting it'll drain probably about 30-40% while doing very little of anything.
But the part that stands out the most is when my s4 is idle overnight , it'll drop about 17-20% while others have reported seeing very little loss.
Has anyone else expierenced poor battery life? Is this normal for my s4 to do?
The only features I have turned on are; Wifi, Sound, Mobile Data, and Sync.
Click to expand...
Click to collapse
Seems you have a run away app that is sucking your battery. If you are rooted, check out Better Battery Stats on xda. I get at most ~2% in an hour but normally its not even 1%.

nakedninja42 said:
Seems you have a run away app that is sucking your battery. If you are rooted, check out Better Battery Stats on xda. I get at most ~2% in an hour but normally its not even 1%.
Click to expand...
Click to collapse
Weird.. I don't think I have any apps that are running wild in the background. I'm not rooted atm though.
If it were a mystery app running in the background, would it be listed on the battery stats screen showing the % each program is taking up?

MentalToast said:
Weird.. I don't think I have any apps that are running wild in the background. I'm not rooted atm though.
If it were a mystery app running in the background, would it be listed on the battery stats screen showing the % each program is taking up?
Click to expand...
Click to collapse
Could be location reporting
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

MrPlNK said:
Could be location reporting
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
I'm sorry if I'm TOTALLY off, but would that require the gps toggled on?

MentalToast said:
I've seen a couple threads praising their s4s for how long the battery life and in one case how much it flatlines while it's idle.
Since I've had mine , I've noticed the opposite. Using it very casually throughout the day with some light texting it'll drain probably about 30-40% while doing very little of anything.
But the part that stands out the most is when my s4 is idle overnight , it'll drop about 17-20% while others have reported seeing very little loss.
Has anyone else expierenced poor battery life? Is this normal for my s4 to do?
The only features I have turned on are; Wifi, Sound, Mobile Data, and Sync.
Click to expand...
Click to collapse
You said you have sync enabled, how many different accounts or apps are syncing and how often? If you have 4-5 accounts syncing every 15 minutes, your phone will never sleep and you will see massive drain
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

MentalToast said:
I'm sorry if I'm TOTALLY off, but would that require the gps toggled on?
Click to expand...
Click to collapse
One of the problems I had when updating to my new S4 was the memory card. Going from the S3 to the S4 was not good. The S4 didnt like the memory card and was causing high Gallery cpu/battery usage. Reformating the card fixed that problem.
Now, my Galaxy S4 has the best life of any Android I have ever had. At the end of the day, it still has 40% battery remaining with an screen on time of around 4 hours.

hmbpopo said:
You said you have sync enabled, how many different accounts or apps are syncing and how often? If you have 4-5 accounts syncing every 15 minutes, your phone will never sleep and you will see massive drain
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
I think you're aiming in the right direction here. That was one of my guesses was that sync is draining it fast.
Just checked what i had under accounts. The only ones that were syncing were Google (toggled off a few of the features i don't use so i only sync what i do use, drive , calender etc)
The only other one that was on was Samsung account which i just toggled off as well since I don't have any need for that to be synced up whatsoever.
The only other apps I can think of that actively try to sync are my gmail and facebook. I'm not sure how to view the frequency for gmail to sync, but facebook is set up to check every hour.

MentalToast said:
I think you're aiming in the right direction here. That was one of my guesses was that sync is draining it fast.
Just checked what i had under accounts. The only ones that were syncing were Google (toggled off a few of the features i don't use so i only sync what i do use, drive , calender etc)
The only other one that was on was Samsung account which i just toggled off as well since I don't have any need for that to be synced up whatsoever.
The only other apps I can think of that actively try to sync are my gmail and facebook. I'm not sure how to view the frequency for gmail to sync, but facebook is set up to check every hour.
Click to expand...
Click to collapse
Yeah I have more accounts than that and I see 4+ he's of screen time a day with 30-40 percent left at the end of the day. I would try formating your sd card as stated above as that is also a known problem
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

Not I personally. My buddy his wouldn't charge past 46% no matter what. Not even with new battery or after a factory reset.
I tho notice better battery life with this phone then on my s3.
Sent from my SAMSUNG-SGH-I337 using xda premium

hmbpopo said:
Yeah I have more accounts than that and I see 4+ he's of screen time a day with 30-40 percent left at the end of the day. I would try formating your sd card as stated above as that is also a known problem
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
I don't have a sd card inserted

Here is mine on little usage. About a good 2-3 hours of screentime, everything turned on, max brightness, and live wallpaper...
I also had a 64GB MicroSD from my Galaxy S II that I did not format.
From the screenshot, the MediaServer is from the live wallpaper, and Maps -> almost every location setting in maps setting is checked... which will change soon... :good:

FWIW, GSMArena did a new battery test for the i9505 after the recent OTA update:
http://blog.gsmarena.com/samsung-i9...ests-update-battery-life-improved/#more-48734
Overall, it saw a slight improvement.

MentalToast said:
I'm sorry if I'm TOTALLY off, but would that require the gps toggled on?
Click to expand...
Click to collapse
Doesn't google now always tell you how far you are from home regardless of gps being on?
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

nakedninja42 said:
Seems you have a run away app that is sucking your battery. If you are rooted, check out Better Battery Stats on xda. I get at most ~2% in an hour but normally its not even 1%.
Click to expand...
Click to collapse
Is there a free app that is good for checking out the stats. Looks like the Better Barry Stats is paid.

Yea just checked bbs and it showed that any smart screen feature turned on caused wakelocks 7 hours straight while I was sleeping. disabled and Now I barely get battery drain and my phone goes into deep sleep. Sucks cuz I liked using smart screen features.

I'm getting itty good results I think? Formatted memory card installed.
How does this stack up against your guys
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

RandomHandle said:
Is there a free app that is good for checking out the stats. Looks like the Better Barry Stats is paid.
Click to expand...
Click to collapse
Its paid in Play store, but if you find the xda thread (search on google: "better battery stats xda") there is a version available there. If you like it support the dev

RandomHandle said:
Is there a free app that is good for checking out the stats. Looks like the Better Barry Stats is paid.
Click to expand...
Click to collapse
Look on XDA, its free.
Also after the OTA update my battery life is about 2x worse. Before I would lose 1% overnight and now i lose about 3%. Before I could get 4hrs screen on time with 20hrs standby, and now I am at 35% with 10 hours standby and 2hrs 6min on screen on.
Going to factory reset tonight.

I have only slightly better battery life than my rooted inspire 4g with a 1230 mah battery....
I cant WAIT for the custom roms and developers tweaking these phones...there is soo much potential for this device!
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

Looks like I'll have to bring my charger to work..

So I got the s8+ two days ago and I gotta say, I'm not that impressed with the battery, my nexus 6p was more reliable.. Just got home from work and had ~17% left with 3.5h sot. This means that when I get home from work I'll have to charge my phone for half an hour atleast before I can go out and enjoy my spare time, I can't just go out straight from work
Anyone have any pointers?
Some key notes, no wifi at work (working within the government in Sweden is retarded)
And the 4g is pretty weak.
Brightness is around 50% and I have disabled bixby and 100 other services (package disabler)
Played games for like 1h
Some browsing, no video watching
Nobody called me during the say because I'm an asshole
That's pretty much it

Two days isn't really a good test to see what the battery life will be like. Especially since you are installing apps and setting up the phone.
Sent from my SM-G955U using Tapatalk

I suggest use a black theme to save battery, as AMOLED screens doesn't need much power producing black color.
Also in the bottom of Battery settings, there's "always sleeping apps". Add all apps here that you don't need running in the background.
Also disable mobile internet if not needed, or at least turn on data saver.
Sent from my SM-G955F using Tapatalk

Katt50 said:
Two days isn't really a good test to see what the battery life will be like. Especially since you are installing apps and setting up the phone.
Sent from my SM-G955U using Tapatalk
Click to expand...
Click to collapse
BratPAQ said:
I suggest use a black theme to save battery, as AMOLED screens doesn't need much power producing black color.
Also in the bottom of Battery settings, there's "always sleeping apps". Add all apps here that you don't need running in the background.
Also disable mobile internet if not needed, or at least turn on data saver.
Sent from my SM-G955F using Tapatalk
Click to expand...
Click to collapse
Yeah im happy both of you responded to me, I do realize that 2 days is way too soon to judge the battery, and I am not going to do so, you are both right and I did follow the advice you posted, got all the apps I don't need running in the background etc! Thanks guys, let's see if I end up with more %tomorrow after work

WOW! I wonder what's draining you so quickly? I'm getting right at 7hrs SOT with no WiFi and marginal cell service at work!

You must've disabled an app that keeps pinging the system. Try to enable all apps and go from there. You shouldn't have to disable anything. Just watch for resource hungry apps like Facebook or Snapchat

subyfan said:
WOW! I wonder what's draining you so quickly? I'm getting right at 7hrs SOT with no WiFi and marginal cell service at work!
Click to expand...
Click to collapse
guaneet said:
You must've disabled an app that keeps pinging the system. Try to enable all apps and go from there. You shouldn't have to disable anything. Just watch for resource hungry apps like Facebook or Snapchat
Click to expand...
Click to collapse
Yeah im not enjoying this.. it's been 3 hours, barely used the phone and im down to 80% already (30 min sot)
I renabled everything in package disabler again, won't be using it untill people get more comfortable and researched in the subject of matter.
4g signal is pretty bad at work though, and these idiots dont have wifi lol. (getting like 1-2 bars)

Maybe it was package disabler causing the problem, if you disable something which something else relies on it might constantly try and connect to the disabled package causing battery draining
if you do continue to have a poor experience i definitely suggest using a pure black theme, This will boost your SOT buy a few hours minimum

MrAshMan said:
Maybe it was package disabler causing the problem, if you disable something which something else relies on it might constantly try and connect to the disabled package causing battery draining
if you do continue to have a poor experience i definitely suggest using a pure black theme, This will boost your SOT buy a few hours minimum
Click to expand...
Click to collapse
I did re-enable all apps within package disabler again in the morning, im at 65% now thats 5h battery usage and 1.5h SOT.
How are people getting 8-9 hours SOT... HOW
also I am using a black theme atm, it's the "high contrast" on samsung theme store
I appreciate the help

You may have a dud. I'm coming from a 6p too and I usually have about 30% batter at the end of the day when I was shutting down right before leaving. I run a dark substratum theme with brightness at 35%. I get 6hrs but I stream video and game off and on.Give it a few days and if things don't improve try a new one.

alldino said:
I did re-enable all apps within package disabler again in the morning, im at 65% now thats 5h battery usage and 1.5h SOT.
How are people getting 8-9 hours SOT... HOW
also I am using a black theme atm, it's the "high contrast" on samsung theme store
I appreciate the help
Click to expand...
Click to collapse
Hey man. I had this same issue when i bought my phone. Apparently my phone wasn't going into deep sleep mode. Install an app called CPU spy and you'll be able to see if you're phone isn't going into deep sleep due to an app. If your phone is going into deep sleep but you still have battery drain like that. It could be a defective device. Btw the issue I had was facebook app. I disabled it and now I'm getting at least 8:30 hours sot.
Sent from my SM-G955U1 using XDA-Developers Legacy app

vermiciouskanid666 said:
You may have a dud. I'm coming from a 6p too and I usually have about 30% batter at the end of the day when I was shutting down right before leaving. I run a dark substratum theme with brightness at 35%. I get 6hrs but I stream video and game off and on.Give it a few days and if things don't improve try a new one.
Click to expand...
Click to collapse
lildoggs said:
Hey man. I had this same issue when i bought my phone. Apparently my phone wasn't going into deep sleep mode. Install an app called CPU spy and you'll be able to see if you're phone isn't going into deep sleep due to an app. If your phone is going into deep sleep but you still have battery drain like that. It could be a defective device. Btw the issue I had was facebook app. I disabled it and now I'm getting at least 8:30 hours sot.
Sent from my SM-G955U1 using XDA-Developers Legacy app
Click to expand...
Click to collapse
I'll look into that theme, thank you for the tip Vermicious!
I am going to install cpu spy, I do use facebook, i dont know why tbh, might actually disable it and might just use the messenger app whitch is the app i pretty much only use anyways (for social media)
I have verified that I can return the phone unlike my note 3 that I bought a couple of years ago (battery laster 4 hours first charge, wanted to return it but since i had peeled the plastic off they rejekted it lol, such dicks xD)
Other than the battery being a big off the device is absolutely incredible, I am happy I gave samsung another chance, (I had sworn to never use a samsung device again after the note3)
again, many thanks for taking your time to look into my issue!