Galaxy S8 Battery problem on Oreo - Samsung Galaxy S8 Questions and Answers

Hello XDA,
i'm devastated to see this happening on my S8. What is the prpblem with it? is it the Oreo or something else? I disabled Bixby completely with package disabler and other unecessary bloatware... any suggestions on what to do? What is your usual SOT? Please give me some advice :/

Uhmm did u factory reset after upgrading to Oreo?
Sent from my SM-G950F using Tapatalk

This is normal. SOT is very subjective. Try keeping the screen on (like reading an ebook or photos) for an hour, after charging to 100%. You'll hit 1 hr SOT with less than 20% drain. Also your battery must be now at 95% capacity after nearly a year of usage. If the problem persists, do a factory reset, try running with minimal apps and check back after a week or at least 5-7 charging cycles. Finally install BBS and check for wakelocks by any rogue apps.

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Note 3 | 4.4.2 version|battery drain of 22% overnight.

Hello All,
I'm using note 3 France version. I notice that overnight my phone is getting, yesterday night my phone was charged till 93%and i closed all the running apps & when i see this morning, am left with 71% of juice.
Stock Android + no root.
When i look at the battery graph, it just says "android os" for 100%.
Is it actually hiding any of the background process?
Is this normal?
Sent from my SM-N9005
In my case, the sd card is the culprit. Every thing back to normal when i remove the sd card.
Sent from my SM-N9005
SD card shouldn't be a problem, many people use them without any issues, you may have experienced indexing bug, some program residing partially on a card got shot down, when card was removed, or something of this nature.
As far as OP goes, even battery display itself is weird, never seen anything like that. On mine Android OS, Android System, cell standby, device idle, something from Google and screen will show up at the minimum. In your case it seems every other battery usage had to be very small, way less than 1%, If you press on Android System, you will get more details, but no matter what I would do full factory reset to start with, since neither 22% idle discharge nor battery display is normal. Just make sure you have full backups, since you'll loose all settings and need to reinstall all programs.
sbk_hbk said:
Hello All,
I'm using note 3 France version. I notice that overnight my phone is getting, yesterday night my phone was charged till 93%and i closed all the running apps & when i see this morning, am left with 71% of juice.
Stock Android + no root.
When i look at the battery graph, it just says "android os" for 100%.
Is it actually hiding any of the background process?
Is this normal?
Sent from my SM-N9005
Click to expand...
Click to collapse
Isntall wakelock detector
Note 3 battery drain problem Solved...
Hi all..
I am using a note 3 LTE N9005. I was facing the battery drain problem with my phone it used to drain at a rate of 10% an hour even when the phone was locked and kept idle. Like some one mentioned above if I kept it aside after full charging in the night it would be around 50% in the morning.
Then i installed wake lock to check what was causing the issue but couldn't find anything unusual.
Later i noticed that my android system and android OS were consuming more than 35 % charge everyday. Even wake lock and other similar apps couldn't find it.
Finally....finally i decided to uninstall few apps one by one and check if anything changes..... and yessss..... i found it.... Facebook app and Facebook messenger were the culprits. ... particularly Facebook app.
Now without them... i am getting a full 6 hours screen time and 24 hours on normal usage. Just try it.... its worth a try.
Please note : My phone : N9005
Android version : 4.4.2 KitKat
Hope this help you.

Battery goes insane

We all know the battery was perfect with M, we all know that since N battery drains way faster, but I've gotten used to that.. Instead of 5 SOT I got 3.5. Ok.
But now.. I hardly go past 2. Battery drains really fast, it's not even stable. Doze doesn't seem to work anymore, percentage drops each minute and a half, and now.. phone shuts down at 6% all the time. What should I do?
I'm a stock user.
MaorSwan said:
We all know the battery was perfect with M, we all know that since N battery drains way faster, but I've gotten used to that.. Instead of 5 SOT I got 3.5. Ok.
But now.. I hardly go past 2. Battery drains really fast, it's not even stable. Doze doesn't seem to work anymore, percentage drops each minute and a half, and now.. phone shuts down at 6% all the time. What should I do?
I'm a stock user.
Click to expand...
Click to collapse
You could install GSAM and see if it's an app causing the issue. You can also try turning bluetooth off completely for a day or two to see if that's a cause.
Worse case, you can do a full factory image re-flash. In my past experiences, most of the time, updating OS major versions never sat to well with my phone. I personally do a full factory flash-all after every major update.
bigblueshock said:
You could install GSAM and see if it's an app causing the issue. You can also try turning bluetooth off completely for a day or two to see if that's a cause.
Worse case, you can do a full factory image re-flash. In my past experiences, most of the time, updating OS major versions never sat to well with my phone. I personally do a full factory flash-all after every major update.
Click to expand...
Click to collapse
I have GSAM but since N it doesn't show stats for specific apps but only combined. As for Bluetooth, it's never on.
MaorSwan said:
I have GSAM but since N it doesn't show stats for specific apps but only combined. As for Bluetooth, it's never on.
Click to expand...
Click to collapse
Well that narrows it a little more than.
Actually, with a recent update, you can see now.
If you go to Enable More Stats, it will give you directions. I believe you need a file explorer, move one file to another location, and rename that file.
Software fault. The battery doesn't really charge fully, I've noticed that when my phone froze (literally) and it was on on 50%. I warm it up, says 1%.
After that my battery life is exactly half, which means that 1% is actually my 50% but the phone sees it as empty.
Check battery capacity with accubattery. Not completely accurate but it does give you a ballpark range. If the current capacity is way less than the specified spec, then you have a degraded battery
I agree with the Accubattery approach (or similar app) to measure the battery capacity. Several ppl have experienced degraded batteries.
pipnmike said:
Check battery capacity with accubattery. Not completely accurate but it does give you a ballpark range. If the current capacity is way less than the specified spec, then you have a degraded battery
Click to expand...
Click to collapse
I've done a factory reset, Accubattery shows 3022 out of 3450 mAh and 88% of battery health. Do I need to replace the battery?
MaorSwan said:
I've done a factory reset, Accubattery shows 3022 out of 3450 mAh and 88% of battery health. Do I need to replace the battery?
Click to expand...
Click to collapse
Not unless you can get Huawei or Google to do it for free. I haven't seen any new genuine oem replacement batteries. They are either used or fakes that don't work right. Some don't even have a temp sensor. Accubattery shows 2876mAh for me and I get 4.5 to 5 hours sot on 6.0.1. Same as I ever got. After installing 7.1.1 with full wipe from factory image, same settings, same apps, same signal, same usage, I get 3-3.5 sot. On nougat my phone would intermittent turn off under 15%. Hasn't happened once since I rolled back to marshmallow 2 weeks ago. Either some people (like me) are using certain apps that consume battery without it showing on gsam and better battery stats, or nougat just uses more battery when the screen is on. I believe the latter.
MaorSwan said:
I've done a factory reset, Accubattery shows 3022 out of 3450 mAh and 88% of battery health. Do I need to replace the battery?
Click to expand...
Click to collapse
I wouldn't think so based on that snapshot. I'd keep running the capacity test (documentation states accuracy is improved with time) and start looking very closely at individual services and apps for anomalies. If rooting is an option for you, wakelock and battery statistic tools are better able to return more accurate data than non-root apps. Absent any rogue apps or services, monitoring the capacity will give you a trend and likely answer your question about replacing the battery.
hawkswind1 said:
Not unless you can get Huawei or Google to do it for free. I haven't seen any new genuine oem replacement batteries. They are either used or fakes that don't work right. Some don't even have a temp sensor. Accubattery shows 2876mAh for me and I get 4.5 to 5 hours sot on 6.0.1. Same as I ever got. After installing 7.1.1 with full wipe from factory image, same settings, same apps, same signal, same usage, I get 3-3.5 sot. Either some people (like me) are using certain apps that consume battery without it showing on gsam and better battery stats, or nougat just uses more battery when the screen is on. I believe the latter.
Click to expand...
Click to collapse
Ok, good to know.
Can you please follow this order of events?
1. The battery was as I've noted at the beginning of the post, drains fast and shuts down at 6%
2. I've had a factory reset.
3. I turned on the phone, clean and wiped, at 35%. It took me 1:29 hours to get from 35% to 7% [which is great!] but then at 6% it shut down again.
4. I turned it on right after, it showed 1%. It lasted for another 10 minutes of usage.
5. I charged it to 100%.
6. Then, when the screen is off, battery loses 2% per hour, and when I use it, it loses 1% every 3-4 minutes [which is great], BUT - sometimes it loses 2% at a time, say 80 to 78 and so on. I still don't know if the phone is gonna shut down at 6% or if it was already fixed.
Does that seem normal?
MaorSwan said:
Ok, good to know.
Can you please follow this order of events?
1. The battery was as I've noted at the beginning of the post, drains fast and shuts down at 6%
2. I've had a factory reset.
3. I turned on the phone, clean and wiped, at 35%. It took me 1:29 hours to get from 35% to 7% [which is great!] but then at 6% it shut down again.
4. I turned it on right after, it showed 1%. It lasted for another 10 minutes of usage.
5. I charged it to 100%.
6. Then, when the screen is off, battery loses 2% per hour, and when I use it, it loses 1% every 3-4 minutes [which is great], BUT - sometimes it loses 2% at a time, say 80 to 78 and so on. I still don't know if the phone is gonna shut down at 6% or if it was already fixed.
Does that seem normal?
Click to expand...
Click to collapse
It doesn't seem normal to me. Neither the 6% shut down nor the increased battery drain. As I said, I had both issues to some degree, early shutdown, and much less screen on time. Since a switch to 6.0.1 fixed both issues I am lead to believe they are software problems, not hardware. Google responded on reddit that they are looking into the early shutdown issue about 10 days ago. Then there is also the sudden influx of bootloops of death after Nougat. My advice is to use Marshmallow until things become more stable.
You could go into accounts-Google and see if there are any syncing errors.. Facebook and Facebook Messenger are both known to cause big battery drains on Nougat. Gas Buddy used to be a problem as well but not sure if it still is. As another person suggested doing a full flash-all.bat clean install might fix your problem. Some people just go back to Marshmallow,

My S7 Edge G935v battery drain so Fast at 15% - turn off suddenly at 5%?

Hi,
My S7 Edge G935v runing Lastest G935U Firmware QG1
My battery drain from 100%-15%...normally, but from 15% to 0% drain very fast. (5%/time: 15-10%-5%). and when 5% remaining it turn off suddenly.
My screen on about 4.5-5hous...
So Should I replace new battery? and how to fix or calibrate battery?
In my opinion the battery is ok
loveuhp said:
Hi,
My S7 Edge G935v runing Lastest G935U Firmware QG1
My battery drain from 100%-15%...normally, but from 15% to 0% drain very fast. (5%/time: 15-10%-5%). and when 5% remaining it turn off suddenly.
My screen on about 4.5-5hous...
So Should I replace new battery? and how to fix or calibrate battery?
Click to expand...
Click to collapse
Before I paid for a new battery Id probably factory reset and see if it continues. Id also install accubattery from playstore. Youve got to let the app measure your battery health for 24 hours. Itll tell you how much battery capacity you have left (degradation)
But based on your observations, I'm not sure you need a new battery. Do you always let it run so low?
KLit75 said:
Before I paid for a new battery Id probably factory reset and see if it continues. Id also install accubattery from playstore. Youve got to let the app measure your battery health for 24 hours. Itll tell you how much battery capacity you have left (degradation)
But based on your observations, I'm not sure you need a new battery. Do you always let it run so low?
Click to expand...
Click to collapse
Battery Health in accubattery now is 96% after some charge times
15% remaining about 5mins using
hello,
I'm Italian.
Same problem for me since a week for my S7.
But I done the last update few monts ago (Android Nougat).
What we have to do?
Try an app called Advanced Repair Battery Life. You can find it on Play Store:
https://play.google.com/store/apps/details?id=com.mocamocaapps.advancedbatteryliferepair
Once installed, open the app and hit 'repair' and wait until the process is finished. Once finished, reboot your phone and see what happens.
I've used on my father's Sony device and it seems to work.
hello, an update.
without factory reset, without app.
On Monday, the battery is crashed from 14% to 1% in few seconds. Then a notification prompted me to correct the anomalous consumption of an app (it was whatsapp). I correct it and the it is remained turned on for 2 hour and half (without using) at 1%. Then it goes in auto turn off. Then I turned on and I wait that it goes in auto turn off. Then I plugged and I loaded battery to 100%. I think this procedure is called calibration.
The next days battery is not crashed, it has normal consumaption.
Today I will monitor what will happen.
thanks
Hi guys!
I got the same battery issues here.
Noted 2 days ago, it was at 15% remaining, talked 1 minute with my colleague and the S7 was turned off. Tried to turn it on, the battery was 0%, plugged in and recharged for a while.
Yesterday the same, at 15% turned off, then I monitored it and around 5/7% it switches off on its own.
From 15 to 5/7% goes very fast, in 1/2 minutes and not more. In this situation on the right side it becomes very hot.
I experienced a similar situation with my Galaxy Tab S, the screen was flickering and overheating issues with looping reboots. Solved by an unplug/replug of the internal battery.
I'm very worried about my S7E!
Just for note, I use Quick Charge very often and a magnetic support for car use.
crystal13282 said:
hello, an update.
without factory reset, without app.
On Monday, the battery is crashed from 14% to 1% in few seconds. Then a notification prompted me to correct the anomalous consumption of an app (it was whatsapp). I correct it and the it is remained turned on for 2 hour and half (without using) at 1%. Then it goes in auto turn off. Then I turned on and I wait that it goes in auto turn off. Then I plugged and I loaded battery to 100%. I think this procedure is called calibration.
The next days battery is not crashed, it has normal consumaption.
Today I will monitor what will happen.
thanks
Click to expand...
Click to collapse
Yesterday evening the same on my device. Spotify prompted as anomalous consumption, corrected and the drain stopped for a while.
Opened Tapatalk and here we go again with the fast running out. Hope that will be better right now.
Installed accubattery app, my battery has 72% of health.
Inviato dal mio SM-G935F utilizzando Tapatalk

Extreme battery drain by android system

Hi friends....
I have the exynos version of s7 edge and am suffering extreme battery drain... when the phone is off it still costs around 2% in one hour and sometimes without even using the phone feels hot in hand.... i have tried everything that was on youtube and all the methods in the xda thread.... twice factory reset my phone and tried resetting as well but the results are same after i update the apps on my phone....
The major reason for the battery drain was 1) wifi active around 37% and 2) apps usage around 61%....
But i couldn't find out which apps were causing the drain since no apps were listed except some with 1 to 4% of drain....
Any help please...
Ps: am not rooted
App used: better battert stats

Bixby Global Actions and Bixby Services causing high Android System battery drain?

Hi,
My Samsung Galaxy S8+ used to hit 5 hours of screen on time minimum. But lately it has been tanking at about 1 percent every 3 minutes or so. When checking battery stats, it says that it is a high android system battery usage. When checking apps for potential battery drain, Bixby Global Actions and Bixby Services was 84 percent of the Android System battery drain. Please assist? Has this happened to anyone else? Should I factory reset?
Same thing happened to me right after the Oreo update. Last night I disabled all Bixby related apps, will see how it affects battery life until tonight. will update.
omricn said:
Same thing happened to me right after the Oreo update. Last night I disabled all Bixby related apps, will see how it affects battery life until tonight. will update.
Click to expand...
Click to collapse
Perfect. Thank you so much. Look forward to your update. I did perform a factory reset so will also update after a few days of use
Any update on this? I was getting terrible battery life on my S9 due to high Android System drain. I did a factory reset and everything was great until I set up Bixby. Then Android System started killing battery life. I disabled everything related to Bixby but it still continued. Just did another factory reset and all is good again, but I'm scared to accidentally hit that button.
Hi,
Unfortunately still no news. I've tried clearing my cache multiple times. But still cannot find the culprit. I have managed to make my standby battery drain decent by updating to the latest March security update. But there is still a high Android system battery drain when using the phone. About 1% battery every 3 minutes.
I'm in the same boat. I did some research and found users complaining about bixby global action and bixby service draining thier batter after the oero update. I looked at my own results and found them draining 178% each! I just disabled the both of them but I'm still losing 1% about every 4 or 5 minutes. Going recharge my phone and see what results I get.
Got sick of this oreo update, the battery isnt as good as nougat even with crd7 and also if you set display on wqhd and u use app pair , after that when u hit the multitaskig button there is an animation stuter, i cannot cope with this.
And I had problems with batery but now it is better.
Clean cashe in recovery menu
Set Wi Fi to energy saving
Disable Google services in backround
With this now my batery is 15 - 20% better.
With or without Bixby - same.
My soft is CRD7

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