Samsung Galaxy S6 buring a hole in my pocket and battery life is horrible. - Android Q&A, Help & Troubleshooting

Hi all
Hope this is the right place for this question.
I have a Sprint Samsung Galaxy S6 and it is all up to date with updates etc. Android 5.1.1
I have seen this asked a lot on the web...why is my phone so hot and why is the battery draining so quickly?
I have tried Clean Master and the Battery hibernator (same as Greenify?)
I have tried Doze
I have tried Netguard...never gave it a good chance
I have tried an app called Cooldown or something like that.
I have tried clean up
I installed a GSAM battery monitor and it said that google play services was the culprit. I ran a program called Gservice fix that seemed to help temporarily.
I have deleted all of those apps and same issue persists.
It seems to be worse when I am not on wifi. using the LTE network , so I am wondering if that may be a clue.
I took it to the Sprint store and of course the guy said to do a factory reboot. I know that that is the last option, but I was wondering if there is anything in 2016 that may help me get my phone back to a state where I don't have to have it worry about my battery draining.
Leaving town Tuesday so I would love to see if I can improve this issue!
A million thanks to everyone who reads this and tries to help us out!
Mikeinstlouis

Please post a screenshot of your battery stats / Details, before you make any further changes.
Thanks
Salman Al-Badgail

What's the best way to go about that? Go into my settings and look for the battery?

mikeinstlouis said:
What's the best way to go about that? Go into my settings and look for the battery?
Click to expand...
Click to collapse
Yes go into settings, go to battery, battery usage (something like that) and take a screenshot of the main battery users. I suggest you turn off sync when you are not using it. That uses a lot of background usage to sync everything. Also, keep the screen brightness down. Screen usage is the number 1 culprit for (normal) android users. Just get back to us with the info.

My battery seem to do a little bit better, not great but a little bit better. But I think it may be because I'm on Wi-Fi. Not sure what I did differently

The issue seems to occur when I am on LTE, not Wi-Fi. How can I uninstall Google Play services updates when its great out? I've read several places that it's helped other people

Related

[Q] Abnormal battery drain overnight

Hi everyone,
I have a problem with my GT-i9300 with stock JB & stock kernel (I9300XXDLJ4), the battery drains too much fast while screen is off, even after all apps closed or cold start (if screen is on, battery drains abnormally fast as well). BBS shows lots of partial wakelocks named NetworkLocationLocator, and of course I have googled this and found an issue in AOSP issues list, but no solution. (sorry can't post links, issue #37348)
The only thing I can do to prevent early battery death is to go to Settings->Location and uncheck 'use wireless networks', but this is really bad for overall user experience. Things like latitude or google now are disabled.
I am attaching lots of screenshots that might help to understand my problem + BBS report and logs.
Thanks everyone in advance...
Mate, you know that there is an entire thread dedicated to better battery stats......... Search will probably lead to a resolution.
Sent from my GT-I9300 using xda premium
I am searching for solution for like weeks including thread mentioned. Still no result..
Sent from my GT-I9300 using xda app-developers app
woyorus said:
Hi everyone,
I have a problem with my GT-i9300 with stock JB & stock kernel (I9300XXDLJ4), the battery drains too much fast while screen is off, even after all apps closed or cold start (if screen is on, battery drains abnormally fast as well). BBS shows lots of partial wakelocks named NetworkLocationLocator, and of course I have googled this and found an issue in AOSP issues list, but no solution. (sorry can't post links, issue #37348)
The only thing I can do to prevent early battery death is to go to Settings->Location and uncheck 'use wireless networks', but this is really bad for overall user experience. Things like latitude or google now are disabled.
I am attaching lots of screenshots that might help to understand my problem + BBS report and logs.
Thanks everyone in advance...
Click to expand...
Click to collapse
I have exatly the same issue. Search and search and nothing. already troubleshoot using BBS, the only way to do it is disable it or use an app that disconnects 3g and wifi and connects it every x minutes - like easy battery saver. the only thing I am amazed is that there are not so many reports about it...
will keep you posted since I keep troubleshooting.
nunomax said:
I have exatly the same issue. Search and search and nothing. already troubleshoot using BBS, the only way to do it is disable it or use an app that disconnects 3g and wifi and connects it every x minutes - like easy battery saver. the only thing I am amazed is that there are not so many reports about it...
will keep you posted since I keep troubleshooting.
Click to expand...
Click to collapse
It seems like I found the problem, at least on my phone. I have disabled SNS (Social Network Service or so, a weird app shipped with the stock rom by samsung) and also uninstalled the facebook app, looks like I don't have the issue since that. Battery has drained much less overnight today, and I don't see any location-related wakelocks in BBS. I'll try to find what exactly causes the problem
Can you please be more specific about this service? Where did you disable and what was the name of the app?
Thanks
Sent from my GT-I9300 using Tapatalk 2
nunomax said:
Can you please be more specific about this service? Where did you disable and what was the name of the app?
Thanks
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
It's under Settings->Application Manager. You have to swipe twice to the right in order to open 'All applications' tab there, and find SNS app, and then click 'Disable' button. The app's icon looks like Facebook logo (little f letter on blue background). Please let me know if it was helpful.. and don't forget to freeze/uninstall official facebook app
Thanks. Meanwhile I've remove and disable a lot of services, mainly from Samsung that I don't use and the battery drain is more stable when the device is on standby.
Sent from my GT-I9300 using Tapatalk 2
nunomax said:
Thanks. Meanwhile I've remove and disable a lot of services, mainly from Samsung that I don't use and the battery drain is more stable when the device is on standby.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Well, have you noticed anything other than the services and battery drain? Maybe an in-/decrease of performance, or something else?
If you look on the Android *stock* battery stats app, you'll see, as soon as the screen is off, for the night, the data connection goes crazy with different signals and network modes. Have you tried putting the phone somewhere else at night, maybe just to see, whether that makes a difference? I'm guessing, you get fluctuations in your network, at night. That has happened to me, quite a lot, as I had my GS II (Telekom DE fixed it, though).
If that isn't the problem, then you've probably installed other third-party apps, that are causing this battery drainage, maybe they're collecting your user data, or something.
Anyways, hope I could help!
LG familyguy59/Beatsleigher
Yes I've been watching it. In resume:
1) if you activate use networks for location the battery drains even if none app request it.
2) there are a bunch of services mainly from Samsung that drains the battery just because they do.
3) if I leave my Wi-Fi off for the night it will drain 5% against 20% if I leave it on
Probably this one is because of weak Wi-Fi at my bedroom. Yes I've selected only when connected but even so the phone doesn't respect it.
4) if you have selected backup this phone to Google it will drain the battery also
5) I can have really good battery life if I disconnect Wi-Fi and data and connect it once in a while
But my point is why should I need to manage all this stuff? Why do I need to spend more time troubleshooting something instead of having fun with a new phone?
I've used juice defender, battery stats and a bunch of other applications just to conclude that android and Samsung are a piece of **** regarding power management.
And yes, Google now is disconnected and also history location.
If I wipe my phone and do not install anything, battery life is regular, as soon I start to install apps it will start to drain without apparently explication.
I have bought an extra battery and will live with it. I this it's just an os feature.
I've tried some custom rom's but all of them have problems, some because something doesn't work, others because developer didn't implement it, so I know if I want one good enough to suit my desires,I should cook it myself but I do not want to do it, so I came back always to official one.
And I do not have enough patience to undervolt or spend my nights tweaking something that should have work from out of the box.
This is my experience with my first android and I think this is why people always have complains about this system. I'm just going to live with it and accept the fact that this os have lots of defects that should not exist.
One thing is true: it is very frustrating from an user experience point off view.
Just my 2 cents
Sent from my GT-I9300 using Tapatalk 2
I completely agree with you here. I don't know what exactly causes the problem, bugs with Samsung's software or bugs in Android itself - I don't care. The user experience is awful with this device.
I really considering getting an iPhone. iOS is built the way when regardless of amount apps installed and their quality the battery life is stable and decent. No app, maybe except VoIP, could drain battery if it's in the background or the screen is off. For me personally, all this Android's 'customizability' causes only decline in UX and battery life.
Ridiculously, there are lots of poor quality apps for Android that behave extremely bad, for example The Tribez game. It's a game, and I am expecting battery drain only when I'm playing (isn't it logical?), however, I do get drain caused by this app even if it's closed! That's ridiculous. I just bought an iPad version and I have absolutely no problems with it, moreover, it is running much faster on my dualcore tablet than on my cutting edge quad core phone. Of course, this is just an awful job porting the game from iOS to Android, but I'm sure, mostly this is problem with Android itself. This is the _mobile_ OS, and it must not allow any app behave like this (like iOS does, it kills badass processes almost instantaneously). I'm sorry Android fanboys, but your lovely OS is a poor quality product.
I've already said too much, but again, I don't want to think if my WiFi or anything else is turned off, I want to use my handset. I think you get my point.
Sent from my GT-I9300 using xda app-developers app

Mysterious battery drain. Please help! (need PROs)

Intro
Hello I'm a very old lurker in this forum yet a new member and this is my first post so please don't kill me if I failed to follow the rules or if my English sucks. I will try to organize this thread and make it clear and easy to understand and read, while providing as much information as I can.
The Problem
So my i9100 has been having extreme battery drain lately, about 2% per 3 minutes. I refrain from using it throughout the day to help my battery hold until night. When I do so, it is usually about 40% by the time I go to sleep with having BARELY used the phone. Probably just now and then to answer a Whatsapp message or to check the time. I've long ago uninstalled all games since I can't even think of playing games with this horrible battery status.
How it started
The last thing I can remember before starting to have this problem is about a year(?) ago when I was on Jellybam. I had good battery, and then a build with an excellent battery came out and it worked perfectly. I can't remember which version it was, but a little after that, I updated Jellybam and noticed SUPER battery drain. I waited a little for the next updates but it wasn't fixed, so I changed a ROM. I noticed that it wasn't helping. So I tried the following for a couple of months now:
Attempts To Solve The Problem
I have tried the following:
Using lowest screen brightness
Disabling obvious stuff like GPS, Bluetooth, Wifi, 3G
Closing or even NOT installing any known battery consuming apps
NOT using task killers
USING task killers
Underclocking
Removing widgets. Using least icons possible on launcher
Using many different launchers
Changing ROMs, kernels and both
Reverting back to stock
Buying a new battery (extended and not original)
Trying a new original battery from a friend who has i9100
Flashing modems and RILs, including GetRIL. In fact, I've had better battery with worse signal (but not always). I think it was with XXLPH or XXLPW.
Using battery savers like JuiceDefender which basically do everything I've already tried. What's a smartphone without internet
Using BetterBatteryStats and Gsam Battery Monitor Pro. Did not notice anything special (but I am not pro enough to understand everything on BBS, though I googled some of the things and haven't noticed something unusual). Maybe some pro can help me with it.
Assumptions / Notes
A couple of versions ago, I have used Omega ROM version 4.2.1 which suddenly fixed(?!) my battery. I can't remember which build it was, but the new one doesn't fix the battery drain. I assume it could be due to the radio update to XXMS2
I have a feeling that the drain is related to the modem (aka baseband), because I've had some more battery-friendly modems and some less
I have tried many modems that are supposed to work perfectly (and really gave me good connection speed and signal), but they did not fix the battery drain. Even on stock rom
My provider is Golan Telecom, which is supposed to work good with Cellcom modems, but it didn't. At least not battery-wise
Last resort can be taking it to a lab, but it's hard for me to stay without my phone, and I think people here are more skilled than the noobs in the lab.
Can the problem be hardware-related but not battery-related? May it be caused by the huge amount of times I've flashed ROMs and kernels?
Had my phone for around 2 years
Never bricked my phone
Sorry for being a burden to this forum with this first post of mine, but thanks a TON of anyone who can shed some light on this problem for me!
*I have attached one log of BBS
2h screen on , 3h wifi running and 50% how you did that?
I don't think that is a big battery usage
Which battery do you have?
Sent from my GT-I9100 using XDA Premium 4 mobile app
krazy1101 said:
2h screen on , 3h wifi running and 50% how you did that?
I don't think that is a big battery usage
Which battery do you have?
Click to expand...
Click to collapse
Don't know, the battery is just dying so fast...
I got the original one that comes with the i9100
It doesn't look horrendous to me. Things to do though :
1. Grant BBS root rights. Need it to see network and alarms.
2. Did you play music at all? If not, you need to diagnose apps which are putting out sound. Viber is a common culprit.
3. Deleted_wakelocks comes when you turn wifi off. As it's so large, something is killing you when you're on wifi. My guess would be wlan_rx_wakelock. Basically you need to turn off wifi when you're not actively using it to avoid the drain from it. "Better wifi on/off" may be an app which helps you out there, it'll automate the turning of wifi on and off with your screen.
Sent from a galaxy far, far away
Hopper8 said:
It doesn't look horrendous to me. Things to do though :
1. Grant BBS root rights. Need it to see network and alarms.
2. Did you play music at all? If not, you need to diagnose apps which are putting out sound. Viber is a common culprit.
3. Deleted_wakelocks comes when you turn wifi off. As it's so large, something is killing you when you're on wifi. My guess would be wlan_rx_wakelock. Basically you need to turn off wifi when you're not actively using it to avoid the drain from it. "Better wifi on/off" may be an app which helps you out there, it'll automate the turning of wifi on and off with your screen.
Click to expand...
Click to collapse
Thanks for your reply.
1. I have given it root rights, and will soon upload an updated log
2. I haven't played music at that time, not that I remember, but even with different players or not players at all, and without sound on keypress, the same drain is occuring. Also, I have long ago stopped using Viber as it eats the battery even more. My battery can't afford to have Viber :/
3. The drain seems to continue with or without wifi. I usually leave my wifi on when I'm at home, like now, but I have also tried, many times, to leave 3G without wifi and see if the battery improves. It didn't, unfortunately.

Android 4.3 is draining my battery on standby!

Hi XDA
I literally don't know what to do with my Samsung Galaxy SIII for a bout half a year ago i updated my phone to Android 4.3 and things went a bit weird. First thing I noticed was that the phone was really slow to wake up from standby, sometimes I had to take out the battery because nothing happen. The second thing is that it sometimes get really hot even on standby. I can't make it though half a day without charging my phone! Today it got mad at my phone again and was searching around the web for a solution, I came by lot of forums with people who was dealing with the same problem, but no fix able. I found a guy who had a an app which could register the battery usage in a graph. After running the app i noticed the same as the guy from the video - my phone is pretty normal on use, but then I turn the phone on standby it goes insane (look at the picture linked below)..
I don't know how to deal with the problem. I have gone though the applist to see any remarkable apps, but nothing has cough my attention.
I hope you guy are willing to help me - Save my phone!
mathias.gren said:
Hi XDA
I literally don't know what to do with my Samsung Galaxy SIII for a bout half a year ago i updated my phone to Android 4.3 and things went a bit weird. First thing I noticed was that the phone was really slow to wake up from standby, sometimes I had to take out the battery because nothing happen. The second thing is that it sometimes get really hot even on standby. I can't make it though half a day without charging my phone! Today it got mad at my phone again and was searching around the web for a solution, I came by lot of forums with people who was dealing with the same problem, but no fix able. I found a guy who had a an app which could register the battery usage in a graph. After running the app i noticed the same as the guy from the video - my phone is pretty normal on use, but then I turn the phone on standby it goes insane (look at the picture linked below)..
I don't know how to deal with the problem. I have gone though the applist to see any remarkable apps, but nothing has cough my attention.
I hope you guy are willing to help me - Save my phone!
Click to expand...
Click to collapse
Wrong phone forum!!!
Here is your phone forum http://forum.xda-developers.com/galaxy-s3
Hi, did you solved your problem?
If not, i'd recommend System Panel app. Download it, install, launch. Then go to Menu->Settings, check Enable monitoring option. Then let your phone to be in idle mode several hours - maybe before going to bed. After it - go to SP->Menu->Monitoring->History (in bottom right corner)->Press chart in top left corner->Top apps. Then you'll see top applications that worked in idle mode.
For more information go to 4pda russian forum and search "Советы по улучшению энергосбережения устройств на Android OS" thread - google translate will helps
Try This,,,,,,
I think some app is malfunctioning , i would suggest using Greenify if u r rooted ,
And if u r on Stock ROM then i would suggest u to delete or disable the BLOATWARE.
It helped me hope this was helpful
4.3 on the S3 is extremely buggy especially without Samsung's patch ( which didn't do much ). There isn't much that you can do on stock Touchwiz, except maybe flash a custom kernel. I would suggest flashing a custom rom, but that is up to you. There are many choices for custom roms here including Touchwiz, if you like it.
I've been experiencing disappointing battery life since the android 4.3 update last month on my non-LTE t-mo galaxy s3. I know there's been a lot of discussion and advice by t-mo reps on various forums, but it simply isn't accurate. The party line is "something you installed on your phone is causing increased battery drain after the 4.3 update." However, my partner and I have two identical T-mo galaxy S3's. We have entirely different sets of apps installed on our phones. As soon as we installed the 4.3 update, both of our phones started to drain rapidly faster than before the update. On 4.2 our phones would last to 50% by the end of the day (~8pm) with light to moderate use. Now they're at ~20% by the end of the day, and I can see my battery levels drop faster just while using the phone. This is totally unacceptable. I've downloaded battery monitoring apps, and no apps I've installed are draining the battery, it's the system and kernel that take up most of the cpu. People are saying it's the touchwiz additions that are causing the system to use up more cpu cycles. I refuse to do a factory reset because there's so many reports of this not doing anything. There's clearly a bug in the 4.3 update for the SG3, unless it's touchwiz as everyone seems to indicate. How can I check to see if something is causing too many wakes?
4.3 works prefect here. same battery life as with 4.0 or 4.1.
it's not the fault of 4.3.
Sent from my GT-I9300 using xda app-developers app

Huge battery drain when idle

Hello everyone,
My s6 Edge does not go to sleep. It drains huge amount of battery while idle.
I need urgent help. I have disabled all AT&T bloatware. But it still does not work.
I have also tried hard resetting it, it does not work. Battery continues to drain.
Thank You.
Is this something new or has it always been like this? Btw, which version of LP are you on? 5.0.2 or 5.1.1?
Its new, LP v. 5.0.2
amirage said:
Is this something new or has it always been like this? Btw, which version of LP are you on? 5.0.2 or 5.1.1?
Click to expand...
Click to collapse
5.0.2 seems to be notorious for battery drains...check if your device has the 5.1.1 update which seems to be better in terms of RAM management. Also, are you data or wifi...if on data, then LP is again notorious for a world famous "mobile radio active" bug...it's all over the web...So, the best solution would be to either put the phone in deep freezer until Google fixes the huge bugs in LP or sell your phone...just kidding...
After updating your device (if there's any), do a factory reset...it should solve your problems...hopefully
Does not go to sleep? Check your settings about screen timeout..The battery drain can be fixes through system update..if samsung has any update ready
Sent from my Micromax A110 using XDA Free mobile app
I hard reseted my phone, disable all bloatwares, haven't installed any apps, haven't signed in to anything (even google, only signed into samsung account). charged to 100%. Left the phone for 4-5 hrs, battery drained to 81%.
fliptroniks said:
I was going to say just make sure you dont have too many apps running and you can also download a battery saving app on the play store for free which can help. It sounds like theres something you have running draining your battery though. Keep in mind however that the galaxy s6 edge when charged to 100 percent can hold a charge for quite awhile, but if your only charging it too around 40 or 50 percent it will die rather quickly.
Click to expand...
Click to collapse
shifatul said:
I hard reseted my phone, disable all bloatwares, haven't installed any apps, haven't signed in to anything (even google, only signed into samsung account). charged to 100%. Left the phone for 4-5 hrs, battery drained to 81%.
Click to expand...
Click to collapse
What does it tell you in the battery stats? That's the first place to look. Is Screen at the top or something else like Google Services or a fitness tracking app? Send a screenshot of that as a starter for 10.
shifatul said:
I hard reseted my phone, disable all bloatwares, haven't installed any apps, haven't signed in to anything (even google, only signed into samsung account). charged to 100%. Left the phone for 4-5 hrs, battery drained to 81%.
Click to expand...
Click to collapse
Your best bet is to install TWRP, root, and flash "No deep sleep fix", thats if you dont care about tripping knox of course.
Seems like an aggressive suggestion since we don't know the root cause yet. It might not be a wake lock issue; it could be location tracking or updates getting stuck. I'd rather see the battery stats first.
Screen is not even on the list, i haven't used my device for more than 15-20 mins (used chrome & inbox for 15-20 mins in the morning)
H00pyFr00d said:
Seems like an aggressive suggestion since we don't know the root cause yet. It might not be a wake lock issue; it could be location tracking or updates getting stuck. I'd rather see the battery stats first.
Click to expand...
Click to collapse
H00pyFr00d said:
What does it tell you in the battery stats? That's the first place to look. Is Screen at the top or something else like Google Services or a fitness tracking app? Send a screenshot of that as a starter for 10.
Click to expand...
Click to collapse
shifatul said:
I hard reseted my phone, disable all bloatwares, haven't installed any apps, haven't signed in to anything (even google, only signed into samsung account). charged to 100%. Left the phone for 4-5 hrs, battery drained to 81%.
Click to expand...
Click to collapse
shifatul said:
Screen is not even on the list, i haven't used my device for more than 15-20 mins (used chrome & inbox for 15-20 mins in the morning)
Click to expand...
Click to collapse
Google Services like I thought. There's a number of things that can cause this as it's quite a fundamental service. The most simple fixes are:
- Make sure there's no pending updates in the Play store. These can work havoc with the battery when waiting for manual approval
- If this doesn't work, remove your google account, reboot and re-add it. For some reason this can fix the sync issues that cause drain
- Still no dice? The next one is to backup, factory format then restore your backup. It's a bit extreme but sometimes when you update your software it causes a glitch that only goes away with a factory format
Each time you try a fix, let the battery fully charge then check the stats a couple of hours later.
Thanks for the suggestion, I will let u know the results soon.
H00pyFr00d said:
Google Services like I thought. There's a number of things that can cause this as it's quite a fundamental service. The most simple fixes are:
- Make sure there's no pending updates in the Play store. These can work havoc with the battery when waiting for manual approval
- If this doesn't work, remove your google account, reboot and re-add it. For some reason this can fix the sync issues that cause drain
- Still no dice? The next one is to backup, factory format then restore your backup. It's a bit extreme but sometimes when you update your software it causes a glitch that only goes away with a factory format
Each time you try a fix, let the battery fully charge then check the stats a couple of hours later.
Click to expand...
Click to collapse
You're welcome. If it's any conciliation I had exactly the same issue and fixed it this morning with those steps.
Google services is one of the biggest battery user but it still doesn't explain his erratic battery loss. I never turn off any features and get decent life.
Sent from my SM-G925W8 using Tapatalk
Tried the third step many times before, didn't work.
So, yesterday I tried the 1st & 2nd step, worked like a charm, I was happy but today, the same results (battery was draning like i was playing games). So I completely removed my google account and left my phone for a few hours. Here is the result (see attached). As you can see no Stupid Google Play Services in the list but what is eating my battery ????
H00pyFr00d said:
Google Services like I thought. There's a number of things that can cause this as it's quite a fundamental service. The most simple fixes are:
- Make sure there's no pending updates in the Play store. These can work havoc with the battery when waiting for manual approval
- If this doesn't work, remove your google account, reboot and re-add it. For some reason this can fix the sync issues that cause drain
- Still no dice? The next one is to backup, factory format then restore your backup. It's a bit extreme but sometimes when you update your software it causes a glitch that only goes away with a factory format
Each time you try a fix, let the battery fully charge then check the stats a couple of hours later.
Click to expand...
Click to collapse
polish_pat said:
Google services is one of the biggest battery user but it still doesn't explain his erratic battery loss. I never turn off any features and get decent life.
Sent from my SM-G925W8 using Tapatalk
Click to expand...
Click to collapse
H00pyFr00d said:
You're welcome. If it's any conciliation I had exactly the same issue and fixed it this morning with those steps.
Click to expand...
Click to collapse
Again, LP has a world famous bug called the "Mobile Radio Active" bug. What this means that if an app uses the data services for some odd reason LP keeps the mobile radio open even if the app does not need it any more...So, for all you know ur issue is Android related and not your device specific. Oh btw, the upcoming M also has this confounded bug...so I believe we will be plagued by this bug for the foreseeable future...And I dumped my iPhone for this buggy Android...Dang!
How is your reception, If most of the time your phone struggle to get reception, it may be part of the problem, just my 2 cents, not an expert, but myself trying to get rid of the google service battery bug...
Better battery stats would give detailed information as to the cause, yet it requires root on all lollipop devices. Helped me find the exact cause of my phone never sleeping

Battery drain while in deep sleep

Hi!
I need some advices. I own a Tab S3 SM-T820 (new) for three months now. All is OK. But, all of the sudden, after testing a LineageOS build (latest for bonuzz), I wasn't satisfied with battery drain, so reverted back to stock nougat. But battery drain never went away! Usually, while screen off overnight, the battery would drain 1-2% (I always switch off my wifi). But now, same situation, but drain is 15% overnight. I have done a lot of research, used tools to pinpoint wakelock apps, etc. But, according to tools, my tab goes to deepsleep but drains anyway. I cannot count the number of times I reseted my tab to stock thru Odin. Witouth installing any apps, no root, battery still drained. I even took out my SD card since a defective SD card could cause drain. I tried to use battery saving apps (greenify, amplify, etc) but no change. While screen is off, I will loose 15% within 6 hours. I also have cleared the system cache (thru TWRP recovery) and apps cache, with no effects. While screen is ON, battery drain is normal (1% every 5 min.)
Now, for the warranty, since i purchased this Tab new, I approached Samsung for advice, but since I bought it on Ebay, I am not covered by the warranty.
As anyone experienced something like this? I am beginning to think this is an hardware failure. But it is new. Any advice is welcome.
Thank you.
Allan
Check to see how you have Wi-Fi set up during sleep. If you choose never you'll have very low battery drain over night. I often see 0.
Sent from my [device_name] using XDA-Developers Legacy app
jd1639 said:
Check to see how you have Wi-Fi set up during sleep. If you choose never you'll have very low battery drain over night. I often see 0.
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Thank you. Already setup my wifi to sleep while screen is off in wifi settings since the beginning. Unfortunately, no change in battery behavior.
powerade001 said:
Thank you. Already setup my wifi to sleep while screen is off in wifi settings since the beginning. Unfortunately, no change in battery behavior.
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Then you need to see what's causing the battery drain. To do that you'll need a battery monitor such as betterbatterystats or GSam. Both will give you more info if you're rooted.
Sent from my [device_name] using XDA-Developers Legacy app
jd1639 said:
Then you need to see what's causing the battery drain. To do that you'll need a battery monitor such as betterbatterystats or GSam. Both will give you more info if you're rooted.
Sent from my [device_name] using XDA-Developers Legacy app
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Thanks for the tip. I already installed GSAM a while ago and didn't notice any ressource hog apps. Only Android System (see screenshot). Other than that, everything seems normal.
powerade001 said:
Thank you. Already setup my wifi to sleep while screen is off in wifi settings since the beginning. Unfortunately, no change in battery behavior.
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Try turning off your mobile data at night. It stays up and parties while wifi is taking a settings enforced nap.
Hi! I don't have the LTE model. But I will try Amplify with extreme settings I found elsewhere on this board. I hope it will at least cut in half battery drain. I also tried to remove my smart Samsung cover to see if it caused the drain, but it is not the case!
I would try a firewall, restricting all outbound traffic and setting airport mode, wifi off. Also turn off tethering & account syncing, anything that could be attempting to 'get out'. If battery life improves, allow apps back one by one until battery life improves. Same with settings. If battery drain continues, you've at least eliminated outbound intentioned activity as the culprit.
Then I would try monitoring app activity. There are apps out there, but I can't make recommendations, since I've had no personal experience with any. Try a search on the terms:
--> android app activity monitor <--.
Not sure if there's an app that will check battery condition? Or you could take it somewhere to have the battery checked.
These are all abstract suggestions. I wish you luck in finding your issue.
Sam Sung said:
I would try a firewall, restricting all outbound traffic and setting airport mode, wifi off. Also turn off tethering & account syncing, anything that could be attempting to 'get out'. If battery life improves, allow apps back one by one until battery life improves. Same with settings. If battery drain continues, you've at least eliminated outbound intentioned activity as the culprit.
Then I would try monitoring app activity. There are apps out there, but I can't make recommendations, since I've had no personal experience with any. Try a search on the terms:
--> android app activity monitor <--.
Not sure if there's an app that will check battery condition? Or you could take it somewhere to have the battery checked.
These are all abstract suggestions. I wish you luck in finding your issue.
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Thank you! I just applied the amplify extreme mod and eager to see the results. Then I will certainly try your suggestions next...
WIfi battery drain has been present on the Tab S3 since day 1 of release. Hoping Oreo would fix this problem
Well I finally did the ultimate test to sort out if the problem was hardware or software. I factory resetted with Odin on latest XAR AR2 firmware (again...), wiped all data and started the tablet fresh new. No connection to wifi so no apps were installed and no stock apps were updated so to test the tablet as close to stock as possible. Wifi was off, so was location. Wifi set to 'Never'. Battery was at 100%. I let it sit there overnight. This morning, battery was at 82%... So I suppose that means hardware problem. I have a Samsung service center nearby, so I will call later today. Really hope it can be reapaired or I will have a $$$ garbage. Thanks all for your advices.
powerade001 said:
Well I finally did the ultimate test to sort out if the problem was hardware or software. I factory resetted with Odin on latest XAR AR2 firmware (again...), wiped all data and started the tablet fresh new. No connection to wifi so no apps were installed and no stock apps were updated so to test the tablet as close to stock as possible. Wifi was off, so was location. Wifi set to 'Never'. Battery was at 100%. I let it sit there overnight. This morning, battery was at 82%... So I suppose that means hardware problem. I have a Samsung service center nearby, so I will call later today. Really hope it can be reapaired or I will have a $$$ garbage. Thanks all for your advices.
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Just ran across this post. Seems this user solved his battery drain issues by turning off auto updates in developers options:
https://www.reddit.com/r/GalaxyS7/comments/62vmuw/disabling_auto_update_system_under_developer/
I have the 825 model, and with two different firmwares (AQJ1 and ARA2) never had the problem.
Wifi during sleep is set to never and I don't even lose 1% overnight.
Sam Sung said:
Just ran across this post. Seems this user solved his battery drain issues by turning off auto updates in developers options:
https://www.reddit.com/r/GalaxyS7/comments/62vmuw/disabling_auto_update_system_under_developer/
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Nice find. But this setting is already disabled on my tablet and I still have battery drain.
The tablet finally returned from the repair shop but no repair was done to it. Still, the technician is convinced that the problem is software and that reflashing the firmware would do the job, just not with Odin but with their 'servicing tool' provided directly by Samsung Canada. The problem is they cannot flash a US tablet with this tool so I would need my tablet to be serviced by a US shop that has the right tool. Anyone know of a 'Samsung servicing tool' other (and probably more powerful than) Odin that can be downloaded? Or is it the firmware that is special? To be continued...
I just talked to another technician from another repair shop and he confirmed me that Samsung Canada will provide no help nor tools to repair/service tablets and phones purchased in the US. Sad! I already sent an email to Samsung US to see if they can provide any help.
powerade001 said:
I just talked to another technician from another repair shop and he confirmed me that Samsung Canada will provide no help nor tools to repair/service tablets and phones purchased in the US. Sad! I already sent an email to Samsung US to see if they can provide any help.
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Search for 3c battery monitor widget on play.
There is no app more detailed in what is using the battery.
This app gives very comprehensive details on power usage.
I'd also try airplane mode over night. This is all radios completely off.
Also regarding the software.
There's nothing that the service centre can do that you cannot already do your self with ODIN.
If a complete flash and wipe doesn't fix the issue then it's likely hardware.
Maybe it's just the battery at fault. Not particularly difficult to replace for a DIY 'er
ashyx said:
Search for 3c battery monitor widget on play.
There is no app more detailed in what is using the battery.
This app gives very comprehensive details on power usage.
I'd also try airplane mode over night. This is all radios completely off.
Also regarding the software.
There's nothing that the service centre can do that you cannot already do your self with ODIN.
If a complete flash and wipe doesn't fix the issue then it's likely hardware.
Maybe it's just the battery at fault. Not particularly difficult to replace for a DIY 'er
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Click to collapse
Thank you. I will try that app right after work! About Odin, do you think Samsung stock firmware image replaces all the partitions (ex: MISC, HIDDEN, etc..) or only SYSTEM, BOOT and DATA? Because I am beginning to think that one of my partition got corrupted. I remember, when flashing back from LineageOS 14.1 (march-18) to stock rom, restoring Superuser, DM-verity hack and my backup thru TWRP was extremely slow (about 5x slower than normal). But after a reboot, every went back to normal, but drain in deepsleep began...
powerade001 said:
Thank you. I will try that app right after work! About Odin, do you think Samsung stock firmware image replaces all the partitions (ex: MISC, HIDDEN, etc..) or only SYSTEM, BOOT and DATA? Because I am beginning to think that one of my partition got corrupted. I remember, when flashing back from LineageOS 14.1 (march-18) to stock rom, restoring Superuser, DM-verity hack and my backup thru TWRP was extremely slow (about 5x slower than normal). But after a reboot, every went back to normal, but drain in deepsleep began...
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Pretty much all partitions that are important or ones that could affect the running of the device.
There are many partitions not flashed, but these wouldn't affect the running of the device nor would have been touched by a custom OS.
Partitions like misc, hidden etc. can be wiped via recovery.

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