Database Develop

Sudden extreme battery drain

Firstly, please don't bombard me with the check apps responses and the like. I've been running down apps and processes for 2 weeks. I went from being able to use my phone all day with gps on, wifi on, email syncing, and all that good stuff, and still have plenty of juice left after a full day. All of the sudden my phone is draining so fast that it will barely make it overnight (unused). From around 12:30am- 6:30am my phone went from 78% - 2% and was in deep sleep for around 5hr45min of that time. There were no changes or new installs during the period when this started happening. I actually have two Bionics (hwd A & hwd C versions) that were RDlite back to stock ICS within one day of each other (months ago), with not much done to them other than root and unlocking sim. Both started exhibiting this behavior around the same time. Killing apps and background processes and services make no difference at all. The excessively quick drain continues even when in deep sleep. I haven't done another reset, but from what I've read up on the issue, that procedure hasn't helped anyone else who've started experiencing this same problem?
Any suggestions beyond the same ol' 'check your running apps and cpu use'. Something is wrong beyond apps keeping the phone awake or active when the issue continues while in deep sleep.

Your phone is obviously not in deep sleep if it goes from 78-2% unused overnight. Either that or both your batteries are failing at the same time.

Betterbatterystats is telling me it's going into deep sleep. I didn't think so either, for the obvious reasons, but it does without any excessive delay when the phone is left alone. Andriod.os battery use is always in the 60-80% range unless I'm playing a game or something that you would expect to eat up an appreciable amount of cpu cycles. I have 10 instances of kworker/u, is that many normal? 6 of those seem to dominate the energy consumption by android.os. This is the only thing that I've found that stands out. I may be wrong, I don't know much about linux, but I thought that I should also see some type of activity from an app associated with higher kworker activity and/or that many instances running. I admit I'm assuming more than anything else there though.
I find it more plausible that my issue is more related to an issue which seems to be common across a broad range of users, than 3 batteries tested in 2 different phones suddenly acting abnormally, but all in an identical fashion. I don't think it's hardware related either. Two different hardware revisions! Highly unlikely to phones manufactured so far apart would start to exhibit the same hardware related issue at the same time. It would be more likely to occur over a similar period of operation or age in that case. The only common factor, other than when the phones started exhibiting this problem, is that they were flashed back to stock ICS within a day of each other around Feb or March.

I suppose it'd be really rare that this would happen on both phones but is it possible the batteries are just trashed? Try a new one?

[Q] Phone Awake While Asleep

So here's the deal. Wasn't getting great idle drain but figured I'd give it a while to see if it worked itself out. It hasn't. Took my phone off the charger and slept for less than 8 ours and loss almost 16% about 2% per hour.
I had wifi on. Blue tooth off. gps off. i have greenify stopping my voicemail and facebook app. I have about 60 something apps frozen. Android OS took up most of my battery life as you can see in pictures. Went to partial wakelocks and saw email at 30seconds but there are only like 45 secs of partial wakelocks so not that big of a deal. Noticed that better battery stats said my phone was awake for almost an hour (I was on it for 10 minutes looking at stuff which is why the screen on pic saus about 10 minutes, the screen wasn't on at all from unplug to me waking up). Noticed under kernal lock that something was keeping stuff on for almost an hour.
So why on earth was my phone on for almost an hour of the 8 hours i was asleep? Further, why does my battery drain look like it was pretty consistent over that time even though the phone was on for an hour. It makes me think that it continuously must be turning itself back on. I know that wifi is the problem for some people but I figured that I would be able to see that in partial wakelocks yet it isn't there. I can try changing wifi stuff if some sees something showing that it is wifi issues.
Otherwise, maybe i should return the phone???

So , I would say that the main issue is your mail service process. It woke up 184 times, every time it wakes its going to keep the phone awake for a little before the phone completely goes back to sleep. it is work related i assume?

anotherfiz said:
So , I would say that the main issue is your mail service process. It woke up 184 times, every time it wakes its going to keep the phone awake for a little before the phone completely goes back to sleep. it is work related i assume?
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Click to collapse
yes that mail account is work and there is an account for my school. It is the email apk that bypasses security that plenty of other people are running. Do you think that it is an account issue or the Email.apk? So the 180 wake ups only totaled for 30 something seconds of partial wakelock. Is it not showing upas a partial wakelock and that is why the phone says that it was on for so long?
also, I read that something having to do with wifi and the qcom_rx_wakelock cause severe battery drain. Know anything about that.

So, yes, the app only worked for 33 seconds because each wakelock probably required only a few milliseconds to do what it needed to do.. but the phone does not go to sleep instantly after each wakelock. so for each of the 184 times that app woke your phone up, it was "awake" for 5-15 seconds or however long it takes the phone to decide its time to go to sleep again. Awake time for me is almost always a function of screen time, like 1.5x - 2x my screen time.

anotherfiz said:
So, yes, the app only worked for 33 seconds because each wakelock probably required only a few milliseconds to do what it needed to do.. but the phone does not go to sleep instantly after each wakelock. so for each of the 184 times that app woke your phone up, it was "awake" for 5-15 seconds or however long it takes the phone to decide its time to go to sleep again. Awake time for me is almost always a function of screen time, like 1.5x - 2x my screen time.
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Click to collapse
so any idea on a solution besides setting up for my email to only check every half hour. It is set to push right now. Given I don't need it at night really and i can set something up to change when it is allowed to check for emails. But sometimes I am up at 2 because I get an email that requires me to do work. Also, the qcom_rx_wakelock that kept m phone on for 32 minutes or something doesn't seem to have to do with the email. But maybe when the email tries to access the internet that wakelock runs to try to get wifi...
edit: I did more research on the qcom_rx_wakelock. I still don't understand it all but it is some issue that the 4.2.2 update came with. It causes major battery drain on some wifi networks and not on some others. It has to do with the wifi connection continuously having to talk to the router and waking the phone up which is also tied to some apps that are syncing. People on nexus's have created patches that fix the issue, but I don't think I'm going to be doing anything like that. I PMd a member to try and get more information.
For now I have two routers at my house and will be switching to using the other router for my wifi connection on my phone to see if it creates the same battery draining issues while in sleep. If I get any more information I will update again. I also think this could explain a lot of the reason that some people are experiencing sub-par battery life while others are getting great battery life. Depending on what router (work, school, home, public place) you are on might make the phone constantly turn itself on and off trying to reconnect or do something with that wifi network. I know many people have had 15 to 20% battery drain overnight then turned wifi off and just stayed on 3g/4g connection and battery drain went to 4 to 5% over night. FYI

I just got the Moto X and have a few things installed. My question is, in the battery mete graph you have screen on and awake. Is the awake always supposed to be on? I'm guessing it is since it has the touchless controls always listening.

Figured why it won't go to sleep. Has anyone ever had it where the phone app gets stuck and stays awake? Only way to get rid of it for me is to reboot.

"OS System" and "Android OS" CPU Usage

I've been experiencing massive battery drain from CPU Usage by "OS System" and "Android OS" in multiple ROMs, including Stock. It uses CPU for a long time (6+ hours) to a point that my phone is pretty much awake all night if i leave it unused. I cannot last 1 day on standby without even using it. This is getting incredibly f**king annoying. I've tried flashing custom ROMs, custom Kernels, going to privacy guard and revoking permission to keep device awake, removing app permissions and more. This just started out of the blue and is intolerable now. Anyone has a clue about how to stop this apart from just selling the phone?

Been running into the same issue as well. Pretty much tried all of what you've stated along with disabling most of the google syncing apps to no avail. I ended up turning off doze/aggressive doze on OOS 7.1.1, and use greenify (aggressive doze+automated hibernation) on every single apps except for whatsapp/textra (or any other apps I don't mind wakelocks on) and I can get through a night of 8 hrs on wifi with about 2-3% drain. This include greenifying system apps like chrome or playstore. This also helps with the standby time tremendously during daytime when phone is on mobile data. One thing I've read that helped quite a few people is also disabling google backup which seems to be one of the major culprit along with facebook/snapchat. Saying all that, Android OS and OS system still constantly top the lists of battery drain for me, but my standby time has been decent with greenify.

Probably some app updates , I use to have that problem , no more with 7.1.1
Sent from my ONEPLUS A3000 using Tapatalk

Are you sure this is not just the new background optimization doing its work slowly in the background, this feature was introduced in 7.1.1 from what I've heard. As long as you don't flash a new ROM every day, the second day after you should have normal usage when the optimization is done.

I had that exact same problem as well. I forget what I did to solve it though. It appeared for me right after updating to Nougat. Try flashing a custom ROM (since you have the 3T, try using this rom. It's the one I use and I get 7+ hours of SOT with it), preferably with no gapps at all, and no root and leave it like that for a day or two. I'd say after a full 24 hours you'd be able to judge whether the phone is still having battery issues or not. Use the phone as you normally do as well. Don't deviate from your normal usage. And make sure you get at least one full 100% charge in as well during that time period.

Wakelocks

Anyone using battery monitoring apps like BBS or GSam, can you share some of your stats here? I'm trying to figure out whether the seemingly massive amount of wakelocks I'm having is normal or not. The biggest problems seem to be coming from the kernel itself. BBS shows a lot of kernel wakelock time, and GSam consistently lists the kernel as the highest drain in its app sucker screen. Also, the Phone app seems to be waking the device a lot since upgrading to .5.51, which wasn't a problem on .3.374.
I've attached some screenshots that illustrate the problem. I'm already using ForceDoze and Greenify, which have been enabled via ADB, and I've restricted background activity and data for the vast majority of my apps. I'm really hoping there's something I can do about this given that it's impossible to use another kernel (LB and none available for this phone anyway). I've software repaired/clean flashed 3 times.
My battery drain is actually not bad at under 4%/hr (combined screen on/off) and about 1%/hour with the screen off overnight. Today I've logged over 4.5 hours SOT in a period of 17 hours and am sitting pretty at 36%. That's better than any phone I've ever used. But I worry that all the wakelocks are using my phone's CPU, raising its temperature, and might contribute to faster battery degradation.
Also, this is with bluetooth off and my Pebble not paired, but battery drain becomes substantially worse with that setup. My idle drain triples with my Pebble connected. I'm trying to troubleshoot one issue at a time and want to nail these wakelocks before moving onto the bluetooth issues.
If your battery stats looked like mine and especially if you figured out how to fix it, please share!

Given that Sony ended .5.51 deployment prematurely and is currently rolling out .8.49, I think you should update to .8.49 (or wait until your region gets the update if you don't have it yet) then recheck if your problem still persists.
Pouring time and resources into a version that Sony is no longer pushing isn't that great of an investment, especially since it's possible that it was fixed in .8.49.

mhaha said:
Given that Sony ended .5.51 deployment prematurely and is currently rolling out .8.49, I think you should update to .8.49 (or wait until your region gets the update if you don't have it yet) then recheck if your problem still persists.
Pouring time and resources into a version that Sony is no longer pushing isn't that great of an investment, especially since it's possible that it was fixed in .8.49.
Click to expand...
Click to collapse
Everything except the phone app using more battery was the same on .374. And I fixed that after force stopping the phone app and rebooting. I've been trying to troubleshoot this for weeks but just upgraded to .5.51 a couple of days ago. I will flash it when it comes out for Customized UK, but I don't think .5.51 is the root of the problem.
(Oh cool, Xperifirm actually shows .8.49 available for Customized UK now. Time for some flashing!)
Edit: I'm seeing the same degree of wakelocks so far on .8.49.

Update: The battery drain from "phone" is actually Android System. There's a bug in Oreo where sometimes Android System is showing as Phone/RCS in the battery stats. Doesn't explain why Android System is using so much battery though.
https://www.reddit.com/r/GooglePixel/comments/7f7jk2/pixel_2_rcs_battery_drain_is_there_any_way_to/
https://www.reddit.com/r/GooglePixel/comments/7edcav/rcsservice_draining_battery/
https://forums.oneplus.net/threads/rcs-draining-battery.657535/
https://forums.oneplus.net/threads/rcs-service.666045/
https://forums.oneplus.net/threads/found-way-to-end-rcs-sucking-battery-after-oreo.659711/

So I managed to get a lot of my battery drain figured out, but a few things are still bothering me.
1) Google Play Services and Android System and/or Phone (see my last post) are using the Significant Motion Sensor to wake my device constantly.
2) Sony's smart charger (com.sonymobile.smartcharger) is waking my device. I'm assuming this has something to do with Battery Care, which I find to be a useful feature. But why does it need to continue sending alarms to wake up our phones when not plugged in?
I've attached 2 screenshots from Better Battery Stats showing the first issue (Sensors/Play Services and Phone) and 1 showing the second (Alarms/Smart Charger). Note the "wakeup=true" and long times recorded for Significant Motion. This held true when I had my phone sitting face-down on a table for 6+ hours to do battery testing earlier.
Anyone else who uses battery monitoring apps: have you noticed any similar issues?

jrbmed08 said:
So I managed to get a lot of my battery drain figured out, but a few things are still bothering me.
1) Google Play Services and Android System and/or Phone (see my last post) are using the Significant Motion Sensor to wake my device constantly.
2) Sony's smart charger (com.sonymobile.smartcharger) is waking my device. I'm assuming this has something to do with Battery Care, which I find to be a useful feature. But why does it need to continue sending alarms to wake up our phones when not plugged in?
I've attached 2 screenshots from Better Battery Stats showing the first issue (Sensors/Play Services and Phone) and 1 showing the second (Alarms/Smart Charger). Note the "wakeup=true" and long times recorded for Significant Motion. This held true when I had my phone sitting face-down on a table for 6+ hours to do battery testing earlier.
Anyone else who uses battery monitoring apps: have you noticed any similar issues?
Click to expand...
Click to collapse
I'm with you on RCSService being main culpirt for me. No I don't think it's a bug, it actually does use lots of battery. I listen to 3+ hours of bluetooth music a day and when I saw that RCSService was using more power than my bluetooth, then I thought it was time to experiment. So I uninstalled Carrier Service and RCSService and suddenly my battery life jumped by 20%. There was something in the November update to these services that made them go nuts. Several people have noticed a jump in battery usage, but most people, myself included, thought it was down to the new firmware. Uninstalling these 'features' has made no difference to SMS for me, other than I don't get a read confirmation.
I don't know about smart charger, sorry.
Pretty sure the proximity sensor is always on and that must use some power, but I don't know what that would be called in BBS.

Didgesteve said:
I'm with you on RCSService being main culpirt for me. No I don't think it's a bug, it actually does use lots of battery. I listen to 3+ hours of bluetooth music a day and when I saw that RCSService was using more power than my bluetooth, then I thought it was time to experiment. So I uninstalled Carrier Service and RCSService and suddenly my battery life jumped by 20%. There was something in the November update to these services that made them go nuts. Several people have noticed a jump in battery usage, but most people, myself included, thought it was down to the new firmware. Uninstalling these 'features' has made no difference to SMS for me, other than I don't get a read confirmation.
I don't know about smart charger, sorry.
Pretty sure the proximity sensor is always on and that must use some power, but I don't know what that would be called in BBS.
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Click to collapse
Thanks! I should clarify that when I say it's a bug, I believe something is using a lot of battery, but I don't know that it's necessarily Phone/RCS, because it shows up randomly as either that or just Android System. I think it might be something within Android System but being labeled as Phone or RCS. (Edit: Or the other way around; it could be 100% RCS and sometimes shows up as Android System because the phone is part of that umbrella.) I could be wrong but based my judgment on the links I posted above.
That being said, I disabled Carrier Services on your recommendation in the other thread because my carrier doesn't support VoLTE, VoWiFi, or RCS, I've never seen a "delivered" message, and I don't even use the Google Messages app anyway (I use Texra for SMS and keep Messages disabled). So like you, I don't need these services. And I do think there's been an improvement. Might be time to go through the rest of what you recommended via ADB. The only thing that concerns me about doing that is that I'll have to factory reset if I ever switch carriers and want those services, but I guess that's a small price to pay and an unlikely scenario anyway.
The smart charger thing is just weird. It shouldn't need to constantly check whether I'm charging since it kicks in when you plug in. Yesterday I disabled battery care during the day and re-enabled it at night to charge, and I had the best battery life since I've owned the phone: 4.5 hours of SOT over 18 hours off the charger with 30% remaining. I may have to look at idle drain with battery care disabled. I like the idea of battery care, but if it's draining my battery then it just defeats the purpose.
Regarding sensors, BBS has its own category for proximity sensor; this is a separate sensor for significant motion. Somehow Google Play Services and either Phone/RCS or Android System are using that particular sensor all the time. And not just listening to it, but causing lots of wakeups and doing so while the device is sitting on a table all night. I can only deduce that it's somehow seeing motion when there isn't any.

jrbmed08 said:
Regarding sensors, BBS has its own category for proximity sensor; this is a separate sensor for significant motion. Somehow Google Play Services and either Phone/RCS or Android System are using that particular sensor all the time. And not just listening to it, but causing lots of wakeups and doing so while the device is sitting on a table all night. I can only deduce that it's somehow seeing motion when there isn't any.
Click to expand...
Click to collapse
Do you have 'On Body Detection' enabled in smart lock? That would force the phone to affirm if it's moving/stationary regularly and quite often.

Didgesteve said:
Do you have 'On Body Detection' enabled in smart lock? That would force the phone to affirm if it's moving/stationary regularly and quite often.
Click to expand...
Click to collapse
I never enabled that from the start, but just checked in case Google did something, and it's still off.
I also checked my app permissions, and the only ones with access to body sensors are Google Play Services and Tasker. None of my active Tasker profiles require the significant motion sensor. One of them does use the orientation sensor to turn the speakerphone on when it's face-up during a call, but I tried disabling that profile and the stats didn't change.
Maybe I have a messed-up accelerometer...do you know of a way to test that? (Edit: Found it in the Support app - my accelerometer, gyroscope, and proximity sensor are fine)
I think I might head to the Sony Mobile forums with the smart charger issue for that matter. It may be a bug that affects all phones with Qnovo features, or maybe they could at least give me an explanation.

jrbmed08 said:
Might be time to go through the rest of what you recommended via ADB. The only thing that concerns me about doing that is that I'll have to factory reset if I ever switch carriers and want those services, but I guess that's a small price to pay and an unlikely scenario anyway.
Click to expand...
Click to collapse
Correct me if I'm wrong, but couldn't you just "reinstall" those services via the same adb commands? Where you typed uninstall, just replace with install?

Maybe, but I don't know where I would be installing them from...? Since I don't have a backup of the package. I uninstalled a bunch of stuff via adb before and it didn't return with a dirty reflash. I had to flash userdata. So that's all I'm going by.

I'm not sure of the actual technical mechanics, but I believe uninstalling system apps doesn't actually remove the package from the system image, so you can reinstall them at any time.
I think it's like taking down a sign on a store, the actual store is still there, just all references to it are no longer there, so to the OS it's not listed - "uninstalled".

Hello - was there any solution found for this issue?

jrbmed08 said:
Anyone else who uses battery monitoring apps: have you noticed any similar issues?
Click to expand...
Click to collapse
Hi there, what was the final solution to your issue?

Dean F said:
Hi there, what was the final solution to your issue?
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Click to collapse
I gave up. I still have a ton of wakelocks. GSAM shows a bunch of them even when my phone is supposedly dozing. My battery life is OK, not nearly as great as I hoped I'd have with this phone, but it gets me through the day so I've just been living with it. I have noticed better battery on the latest firmware (July patch) than June. I also got rid of the RCS stuff, which helped a bit. And finally I traced a lot of my drain to an app I was using called "hide running in background notification" which the last few firmwares can do natively.
(Edit: Sorry for missing your previous post!)
Edit: I was sadly mistaken about better battery on the July patch. The battery is only better if I'm not on wifi. I posted in the wifi drain thread about it just now.

Factory Reset does NOT solve S10 Battery Drain (15-20%) when Idle

I noticed my Samsung S10 T-Mobile Snapdragon would drain about 15-20% overnight while asleep (6-8 hours) since last week or so. The drain during the day is also significantly worse, but it's easier to compare the numbers when on idle. The first weeks that I had the phone, I was losing less than 5% overnight (6-8 hours). I am not sure if this was caused by the security updates, carrier updates, or a rogue application. I made no changes to the phone settings that I can recall. My phone was connected to WIFI overnight, with cellular, cellular data, and Bluetooth on. Prior to going to bed I would charge the phone to about 80% and unplug it.
I installed AccuBattery after reading some forums and it showed that my battery drain overnight was about 2-3% PER hour. AccuBattery also indicated that my phone was in deep sleep +85% of the time. The breakdown per application does not total the 15-20% so there's something else draining the battery. Eventually, I uninstalled AccuBattery to see if it was contributing to the drain, and it made no difference.
Below are most of the things that I have tried and tested overnight while I slept (6-8 hours), all of them have been UNSUCCESSFUL at solving the battery drain. I might have forgotten some other settings that I have changed. Keep in mind that this took me over a week of playing around with these settings, and checking the battery right before and after I went to sleep.
Restarted phone (There's always someone who would suggest this if not written down)
Cleared Google Services, Google, and other Apps Cache and Data
Cleared Cache Memory (Through recovery menu - Tried this about 5 times at this point)
Reset the big 3 (Reset settings, Reset network settings, Reset accessibility settings)
Enabled Airplane Mode (Cellular, WiFi, Bluetooth Off)
Disabled Location
Disabled Sync
Disabled Always on Display
Disabled ALL Motions and Gestures (e.g. Lift to Wake, Double tap to wake, Smart Stay, etc.)
Disabled Video enhancer
Disabled Game Launcher
Disabled Bixby Routines
Disabled Nearby Device Scanning
Disabled WiFi Scanning and Bluetooth Scanning (Improve Accuracy)
Disabled Show icon when screen is off (under fingerprints - from Samsung Forums)
Disabled certain Apps (AR Emoji, ARCore, Briefing, Chrome, Game Launcher, Google, Facebook, Secure Folder, etc.)
Forced Stop certain Apps (Bixby, Secure WiFi, etc. - they seem to all come back after a couple of minutes anyway)
Enabled/Disabled Adaptive Power Saving (Tried both settings, made no difference)
Enabled/Disabled Auto Optimization (Tried both settings, made no difference)
Switched between Power Modes (Optimized to Medium, made no difference)
Change lock screen and home screen to a 100% black wallpaper
Ran Safe Mode overnight with ALL of the settings above (Airplane with Location and Sync Off, etc.) Still got a 15% drain overnight.
Last night after I got fed up with playing with the countless of options, I decided to Factory Reset the phone thinking that this would solve my battery drain problem. Well, WRONG. Still got a 15% battery drain overnight with only the core apps installed, in airplane mode, location and sync disabled, and other settings disabled. I did NOT restore any backups from Samsung or Google, nor installed any additional apps that did not come with the phone.
I have complained to Samsung through their Samsung Members application under Feedback. If you guys are on the same boat, I suggest we all start complaining so that they can start taking a look at this and hopefully release a fix.
If you guys have any tips or anything has worked for you guys, please let me know.

XDA1697413 said:
I noticed my Samsung S10 T-Mobile Snapdragon would drain about 15-20% overnight while asleep (6-8 hours) since last week or so. The drain during the day is also significantly worse, but it's easier to compare the numbers when on idle. The first weeks that I had the phone, I was losing less than 5% overnight (6-8 hours). I am not sure if this was caused by the security updates, carrier updates, or a rogue application. I made no changes to the phone settings that I can recall. My phone was connected to WIFI overnight, with cellular, cellular data, and Bluetooth on. Prior to going to bed I would charge the phone to about 80% and unplug it.
I installed AccuBattery after reading some forums and it showed that my battery drain overnight was about 2-3% PER hour. AccuBattery also indicated that my phone was in deep sleep +85% of the time. The breakdown per application does not total the 15-20% so there's something else draining the battery. Eventually, I uninstalled AccuBattery to see if it was contributing to the drain, and it made no difference.
Below are most of the things that I have tried and tested overnight while I slept (6-8 hours), all of them have been UNSUCCESSFUL at solving the battery drain. I might have forgotten some other settings that I have changed. Keep in mind that this took me over a week of playing around with these settings, and checking the battery right before and after I went to sleep.
Restarted phone (There's always someone who would suggest this if not written down)
Cleared Google Services, Google, and other Apps Cache and Data
Cleared Cache Memory (Through recovery menu - Tried this about 5 times at this point)
Reset the big 3 (Reset settings, Reset network settings, Reset accessibility settings)
Enabled Airplane Mode (Cellular, WiFi, Bluetooth Off)
Disabled Location
Disabled Sync
Disabled Always on Display
Disabled ALL Motions and Gestures (e.g. Lift to Wake, Double tap to wake, Smart Stay, etc.)
Disabled Video enhancer
Disabled Game Launcher
Disabled Bixby Routines
Disabled Nearby Device Scanning
Disabled WiFi Scanning and Bluetooth Scanning (Improve Accuracy)
Disabled Show icon when screen is off (under fingerprints - from Samsung Forums)
Disabled certain Apps (AR Emoji, ARCore, Briefing, Chrome, Game Launcher, Google, Facebook, Secure Folder, etc.)
Forced Stop certain Apps (Bixby, Secure WiFi, etc. - they seem to all come back after a couple of minutes anyway)
Enabled/Disabled Adaptive Power Saving (Tried both settings, made no difference)
Enabled/Disabled Auto Optimization (Tried both settings, made no difference)
Switched between Power Modes (Optimized to Medium, made no difference)
Change lock screen and home screen to a 100% black wallpaper
Ran Safe Mode overnight with ALL of the settings above (Airplane with Location and Sync Off, etc.) Still got a 15% drain overnight.
Last night after I got fed up with playing with the countless of options, I decided to Factory Reset the phone thinking that this would solve my battery drain problem. Well, WRONG. Still got a 15% battery drain overnight with only the core apps installed, in airplane mode, location and sync disabled, and other settings disabled. I did NOT restore any backups from Samsung or Google, nor installed any additional apps that did not come with the phone.
I have complained to Samsung through their Samsung Members application under Feedback. If you guys are on the same boat, I suggest we all start complaining so that they can start taking a look at this and hopefully release a fix.
If you guys have any tips or anything has worked for you guys, please let me know.
Click to expand...
Click to collapse
If its still draining that much even in flight mode, then something is definitely wrong. Seems like you've tried everything. Can you not get a replacement under warranty from where you purchased it? Sounds faulty.
Sent from my [device_name] using XDA-Developers Legacy app

I have had this same issue with my S7. Hence my reply. At that time I have traced it down to a certain kernel process. The only way to resolve this was to replace the motherboard. A factory reset didnt helped either.
Later when i investigated it further it was like an Interrupt request for sleep mode. Eleminating the phone going to deep sleep. Than you will see drains like this
My advice. Get the device replaced. It was the only way to resolve the problem on my S7. Hardware replacement

Shivani76 said:
I have had this same issue with my S7. Hence my reply. At that time I have traced it down to a certain kernel process. The only way to resolve this was to replace the motherboard. A factory reset didnt helped either.
Later when i investigated it further it was like an Interrupt request for sleep mode. Eleminating the phone going to deep sleep. Than you will see drains like this
My advice. Get the device replaced. It was the only way to resolve the problem on my S7. Hardware replacement
Click to expand...
Click to collapse
I installed BetterBatteryStats and got a ~20 drain over 9 hours of standby while sleeping. The phone was untouched for 9 hours, airplane mode on, location off, sync off, and other settings off.
imgur.com/a/1zAj9LP
Also, how did you manage to get your phone replaced? By Samsung? I am past the 30 day return policy so I am not sure how easy/hard it will be for the to replace my device/motherboard. What did you say to them exactly?

Reflash firmware?

Which update are you on?
After the ASCA, but before the finger print sensor update, I had amazing battery life, less than 1% per hour on idle.
But after finger print sensor update, it's about 2% per hour on idle.
Maybe reflash ASCA without the fps update? If it's possible

evo85210 said:
Which update are you on?
After the ASCA, but before the finger print sensor update, I had amazing battery life, less than 1% per hour on idle.
But after finger print sensor update, it's about 2% per hour on idle.
Maybe reflash ASCA without the fps update? If it's possible
Click to expand...
Click to collapse
Spoke to someone in Reddit and he flashed his phone to the Febraury update. It still had bad idle drain.
Additional things I have tried recently overnight with no success
Disabled fingerprint
Removed SIM Card
Cleared memory cache again
I'll wait for the April update and see if that solves things. If not, I guess I'll drop by one of their service centers/genuis bars.
What a terrible experience...

Yeah that does not seem normal.
With airplane mode drop 0.2%/hours.

Sorry you are having bad issues. I would try to install U1 firmware and see if that helps.
Sent from my SM-G973U using Tapatalk

I'm having the same issue after the recent updates on AT&T. I used to get close to 9 hours SOT and now I barely get 4. Nothing unusual in the battery stats either so I'm not sure what's going on.

Same here. The idle drain is completely insane! It's a shame that the phone suffers from issues like this when you compare it to the price we paid for it. From what I can tell the issue stems from the kernel not being able to figure out the proper frequencies for the cores in idle which leads to **** performance. I'm gonna try to flash the asd4 firmware via odin once. If it doesn't work I'm gonna get a replacement if possible. Currently I get around 4 hours of sot no matter what I do. Doesn't matter what I do which is super weird. My s7 edge which was at least 2 years old gave me a better sot more regularly, so I'm definitely pretty irritated with this. Will update once I flash over odin.

Saumya Mishra said:
Same here. The idle drain is completely insane! It's a shame that the phone suffers from issues like this when you compare it to the price we paid for it. From what I can tell the issue stems from the kernel not being able to figure out the proper frequencies for the cores in idle which leads to **** performance. I'm gonna try to flash the asd4 firmware via odin once. If it doesn't work I'm gonna get a replacement if possible. Currently I get around 4 hours of sot no matter what I do. Doesn't matter what I do which is super weird. My s7 edge which was at least 2 years old gave me a better sot more regularly, so I'm definitely pretty irritated with this. Will update once I flash over odin.
Click to expand...
Click to collapse
To all who has this issues. First thing to check is .. Does the phone ever enters deep sleep ....
I used this app on my S7..
Wakelock Detector. Can be found in google play.. Sorry cant post links due to my new status here.

Znalazłem rozwiązanie szybkiego rozładowania bateri zwłaszcza jak telefon noszony jest w kieszeni. W moim przypadku telefon przez noc zużywa jakiś 3% bateri a po włożeniu do kieszeni w 2 godziny 15% do wczoraj. A teraz Rozwiazanie . Wychodzimy w MENU - ZAAWANSOWANE FUNKCJE - RUCH I GESTY* - i odznaczamy opcję DOTKNIJ DWUKROTNIE ABY WYBUDZIĆ. następnie w MENU - EKRAN BLOKADY - ALWAYS ON DISPLAY - TRYB WYŚWIETLACZA zmieniamy opcję DOTKNIJ ABY POKAZAĆ na którąś z pozostałych lub całkowicie wyłączamy ALWAYS ON DISPLAY . To powinno rozwiązać problem z baterią w moim przypadku kończąc**pracę**z telefonem w kieszeni po 8 godzinach miałem 30% Baterii a teraz 70% .

Shivani76 said:
Wakelock Detector.
Click to expand...
Click to collapse
I know this app,but i have never used it.Next maybe i can......

Shivani76 said:
To all who has this issues. First thing to check is .. Does the phone ever enters deep sleep ....
I used this app on my S7..
Wakelock Detector. Can be found in google play.. Sorry cant post links due to my new status here.
Click to expand...
Click to collapse
BetterBatteryStats shows it goes to deep sleep 99% of the time overnight. No abnormal kernel wakelocks/partial wakelocks/alarms.
A couple of other things I have tried recently unsuccessfully while sleeping (6-8 hours) over the past week:
Safe Mode
Safe Mode + airplane mode
Safe Mode + airplane mode + cache wipe + Google services wipe
Safe Mode + airplane mode + cache wipe + Google services wipe + Remaining Apps in Sleep Mode (Battery Settings>Sleeping Apps)
Safe Mode + airplane mode + cache wipe + Google services wipe + Remaning Apps in Sleep Mode + Max Battery Mode (instead of Optimized Mode)
The best idle drain I got overnight was 15% drain over ~6 hours (~2.5%/hour)
I'll try disabling the Adaptive Battery/Auto Optimization while I have all my Apps in Sleep Mode an Safe Mode. I'll also try another Factory Reset this weekend.
If that doesn't work, I'll schedule an appointment with one of their service centers.
This sucks. My 2-year old S7 Edge still has better battery life than this.

I remember reading a post on Reddit from a guy saying he had a current leak on his faulty motherboard. Maybe you got the same issue on yours.

Paradoxxx said:
I remember reading a post on Reddit from a guy saying he had a current leak on his faulty motherboard. Maybe you got the same issue on yours.
Click to expand...
Click to collapse
After reading your comment, I decided to test the phone completely off overnight.
To my surprise the battery drain was still present. From 5PM to 730AM my battery went down from 87% to 60%!!! So about ~2%/hour while the S10 was COMPLETELY OFF.
I'll be taking my phone to the service center sometime this week. For anybody else having crazy drain problems, turn your device completely off and see if the drain is still present. It might be a hardware issue

evo85210 said:
Which update are you on?
After the ASCA, but before the finger print sensor update, I had amazing battery life, less than 1% per hour on idle.
But after finger print sensor update, it's about 2% per hour on idle.
Maybe reflash ASCA without the fps update? If it's possible
Click to expand...
Click to collapse
Oh, seems like the same with mine, the fingerprint update