yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S7 Real Life Review] HeaDShoTHuntR1:
I drain about 1-2? on 8-9h overnight (airplane mode though)

But during the day my battery drains quite noticable

I have location to gps, sync minimised, cleared cache partition, tried Package Disabler Pro (made it worse), ....

Nothing has really made a good improvement.

Id like to have less standby drain and more SoT.

Maybe a custom ROM will change the game?

Non rooted atm
[Samsung Galaxy S7 Real Life Review] DSF:
With the last update i've got mediaserver excessive drain. This happens randomly, and makes the phone hot and consumes the juice, both when using it and when in 'standby'. This is fixed with a restart... till the next one

(Also the mediaserver could be seen in top of the cpu usage overlay )
[Samsung Galaxy S7 Real Life Review] Doofy911:
Damn, not what i was hoping for. So now there's another drain :(...

Well I'm still waiting on that update to test it out on my phone, think I might be the last one to get it:crying:
[Samsung Galaxy S7 Real Life Review] HeaDShoTHuntR1:
Did a factory reset a few days ago and i still see my battery dropping as I use it or when in standby

Ive dit about everything i can think of....

Any last help?

Once counted my mah used by every app and got 1767mah in Total,

Is that a faulty battery or smthing?

I have no idea what to do/try now

Do you think a custom ROM might change the game?

Any other tips?

Thx for your help
[Samsung Galaxy S7 Real Life Review] fredriks:
A few pages back I wrote that my standby drain got solved by use 5 ghz WiFi instead of 2,4 ghz. On 2,4 ghz my phone drains like crazy in standby,in 5 ghz there's a huge difference in batterydrain.

Skickat från Tapatalk
[Samsung Galaxy S7 Real Life Review] HeaDShoTHuntR1:
Hmm i can try that but it drains even with wifi turned off(using data only)
[Samsung Galaxy S7 Real Life Review] fredriks:
Okay, mine did not drain when not connected to WiFi.

Skickat från Tapatalk
[Samsung Galaxy S7 Real Life Review] DSF:
Maybe is something in my phono... Mediaserver just started again to consume extra cpu.

Notice, no media is playing in the background.

I really don't know what to do, a restart will fix it, but just restarted few hours ago because of spi1 (with light sensor errors multiple times per second in logcat) being on top of usage.

Kudos to samsung and google for pathetic and inconsistent standby battery life.
[Samsung Galaxy S7 Real Life Review] DSF:
Forgot to upload the screenshot. As it can be seen from it, battery started to heat up, recent restart and mediaserver being on top of the list.
[Samsung Galaxy S7 Real Life Review] DSF:
As an update, the mediaserver battery drain was triggered by Chrome (maybe some muted audio/video (ad) was triggered by a page?). And Doze mode kicked in, preventing mediaserver to drain more battery in standby. It was on top while using the phone in general (not only chrome!)

As soon as I've closed Chrome the mediaserver stopped consuming battery.

Thanks to Magistar,

http://xdaforums.com/showpost.php?p=68333419&postcount=23
[Samsung Galaxy S7 Real Life Review] *Detection*:
That would explain why I don't get mediaserver drain, I use Dolphin browser
[Samsung Galaxy S7 Real Life Review] HeaDShoTHuntR1:
Chrome Dev version seems to drain less battery in my case
[Samsung Galaxy S7 Real Life Review] Doofy911:
I've also noticed that the drain starts with mobile data.

After a charge and restart, if i use wifi only, i get great battery life with doze kicking in, but doing the same charge and restart with mobile data used instead, the standby drain bug is alive again.

Even a restart doesn't help. A full charge and restart will only work. :crying:why you do this Samsung?
[Samsung Galaxy S7 Real Life Review] takerhbk:
Anyone getting doze with always on display?? Because I'm not getting any doze what so ever
[Samsung Galaxy S7 Real Life Review] *Detection*:
Nope, that's why I disabled mine about 3 days after getting the phone
[Samsung Galaxy S7 Real Life Review] takerhbk:
Such a shame. Not sure about calling this a feature anymore.
[Samsung Galaxy S7 Real Life Review] TCPDump:
My S7 regularly drains big time, sometimes 30% by noon. I get this obnoxious error stating (Samsung Support Center) that my battery is draining. This was remedied by getting the Pixel. No longer have issues. :D
[Samsung Galaxy S7 Real Life Review] takerhbk:
My phone did doze for 19mins and only once after phone was lying idle for about an hour. The always on display was ON. So I'm guessing problem is something else.
[Samsung Galaxy S7 Real Life Review] Randy Lahey:
Noob Alert

So I recently moved from my Nexus 4 to an S7 so still getting used to the bloat and navigating the Samsung settings vs pure android.

I'm only a couple weeks in but already noticing pretty significant battery drain while the phone is left idle overnight. In 5h 45m I went from 100% down to 89%. The stats stated the following usage: Android System 34%, Android OS 27%, Cell Standby 23%, Device Idle 14%. Extrapolated to an 8 hour idle period, that's a 15% drop in battery which seems very extreme!

The answers may be buried within the 233 posts on this thread, but could someone be kind enough to help out this noob and suggest the quick and easy power-saving suggestions that can help with this overnight power drain? Or is there a separate app that can quickly point out the culprit?
[Samsung Galaxy S7 Real Life Review] antonigaming:
I'd say try downloading Greenify and Amplify. That's what I did. Tho with mobile data(weak signal)/wifi always on, I get around 2-3% drain per hour which is pretty much the same when I am using it. Maybe AOD causes doze not to be triggered. At least in my situation
[Samsung Galaxy S7 Real Life Review] takerhbk:
Try turning off AOD and use greenif you with aggressive doze enabled.
[Samsung Galaxy S7 Real Life Review] HeaDShoTHuntR1:
I use AOD as well but its time set so it doesnt work at night, i use greenify just to turn on the aggressive doze, ...

Limited wakelocks with Amplify

And give powernap a go, its very easy to setup

I dont know wich of the apps have the biggest impact, but ive tried lots of things with Amplify and Greenify without getting the desired changes.

Now i use Powernap alongside Greenify and Amplify and i get 0.5/h overnight with wifi on
[Samsung Galaxy S7 Real Life Review] travis_f:
A recent update to Google Photos was the cause of excessive battery drain on my S7. The battery would not last a day with the app installed, even with all sync turned off.

It is now 24 hours since I uninstalled it and the battery drain is back to what I consider is normal.
[Samsung Galaxy S7 Real Life Review] Doofy911:
Finally got an Update!!

Hey guys,

After 6 months I finally received an update (October patch) to my phone today since the buggy April update.

On Gsam i noticed that 'Phone Radio' is like 4% compared to 40-60% previously. Hoping the drain bug is gone with this update. :fingers-crossed:

on a side note, does anyone know what new stuff has been implemented since March, I'm aware of the crappy Gallery UI change :eek: . . .Thanks in adavance :highfive:
[Samsung Galaxy S7 Real Life Review] GeekyNitz:
Recently, I noticed that my phone's losing about 10-20℅ of battery life per hour. I checked to see what's causing it and found out that the samsung email app is the culprit. Downloaded a third party email app and disabled the Samsung one and now my batt's back to normal.
[Samsung Galaxy S7 Real Life Review] mariano54:
Google photos

After hours and hours of disabling things, I have found that it was google photos was draining my battery. I am now getting great battery 5+ SOT, and very good standby time. I'm also enabling things slowly to see how it affects my battery life, and also disabling as much bloat as I can using EZ.
[Samsung Galaxy S7 Real Life Review] takerhbk:
Google photos and chrome have been known to be battery hogs on this device.
[Samsung Galaxy S7 Real Life Review] paolobacci:
How do you guys check the apps draining the battery?

Is it done by looking to the battery section menu?
[Samsung Galaxy S7 Real Life Review] FreshIce21:
yes
[Samsung Galaxy S7 Real Life Review] murrayit:
I have a strange problem! Hope you guys help me. When I turn off WiFi (Mobile Data is turned off) I have a huge drain, about 4% for half an hour! If I turn WiFi back on everything will be OK! I don't know what is wrong but it shows Android System is using most of the battery, I was using photos and chrome before with no problem! I performed a soft reset on my phone and restored everything using Samsung Cloud and the same thing happened again! How can I find what is wrong with my phone?!
[Samsung Galaxy S7 Real Life Review] marcofr1990:
solution

I've also had the same problem, try turning off the wifi automatic scanning settings-location-location- improves scan wifi and bluetooth
[Samsung Galaxy S7 Real Life Review] murrayit:
Are you using Android Wear/Smartwatch by any chance? I had it for almost 18 months without issues, Today after Soft reset I installed nothing and only updated preinstalled apps and everything was fine, as soon as I installed Android Wear the problem came back, so I unistalled it and now everything is fine! But I want my watch back I don't know what to do... I don't know what's wrong exactly. The usage registers as Android System.
[Samsung Galaxy S7 Real Life Review] marcofr1990:
yes, I also use Android Wear (lg w100)
[Samsung Galaxy S7 Real Life Review] murrayit:
So I guess that's our problem! It's a bit strange though, my battery is normal when wifi is on! But switching it off makes unusual battery drain! So when you turned those options off it went back to normal?!
[Samsung Galaxy S7 Real Life Review] marcofr1990:
try turning off wifi scanning to Settings- position
[Samsung Galaxy S7 Real Life Review] murrayit:
I already did that and without Android Wear my standby drain is nearly zero, lovely! So I just wonder why WiFi off is more battery hungry than on? does scanning use more power?! And why that behavior started recently? Thanks
[Samsung Galaxy S7 Real Life Review] srosner:
I'm getting about 2% drop over the entire night ~9hrs (Airplane mode, AOD turned off)

Is it any good?
[Samsung Galaxy S7 Real Life Review] HeaDShoTHuntR1:
About the same....that's the system drain
[Samsung Galaxy S7 Real Life Review] winhhh:
From a factory reset:

11:33 - 100%

11:43 - 99%

12:20 - 97%

3% in 51 minutes.

No additional apps, AOD is on, sitting on WiFi.

Is something wrong with my battery?
[Samsung Galaxy S7 Real Life Review] *Detection*:
Nope, you'll often see the first 10%~ drop quickly, sometimes it will sometimes it won't

Then it levels out
[Samsung Galaxy S7 Real Life Review] ciprigeorgiu:
You sould not worry. It's normal that after a factory reset the phone works a lot in the background in the first 2-3 hours. Just use your phone normally and after 2 days it will settle down. After the november security patch update android system it's not showing as the no 1 battery user. Now the screen is always number one and I constantluy have 4h+ SOT in 2 days off the cahrger.
[Samsung Galaxy S7 Real Life Review] maitrot:
Don' t expect that to last. Probably incorrect reading/calculation since the battery is new. Think a second. if this was 1% in 6hrs, thats 4% in 24h... 25 days of standby time :)

However, expect 6-10% standby drain overnight to be normal. Depending on your rom and how long you sleep :)

Another thing, probably related:

Calculating a percentage from li-ion batteries is non-trivial. I know that in the past phone and equipment manufacturers have struggled to calculate a linear percentage from the voltages,

especially when the battery is under load..

Users expect the readings to be linear (drain from 3-7% to be equivalent to drain from 93-97%) which is understandable when a percentage is used :)

But when reading through this thread, I get the impression that this still is an issue. Really interested to hear if anything changed in the last couple of years.
[Samsung Galaxy S7 Real Life Review] AnarchoXen:
sucks...

Go to bed with 13%, dead in the AM. Yesterday night it ate 23% and was dead in the AM
[Samsung Galaxy S7 Real Life Review] crash_194:
Do you have Google Chrome installed and do you have something called "media server" as a high battery user in your battery stats?
[Samsung Galaxy S7 Real Life Review] HeaDShoTHuntR1:
Yes & Nope dont have 'media server' issue

Chrome Dev though....but never had it with regular either

Perhaps faulty SD-card?
[Samsung Galaxy S7 Real Life Review] AnarchoXen:
Most of the drain is from Cell Standby. The OS is eating time as well, but Standby is the big drainer. The battery seems to drop off a cliff all of a sudden when 'sleeping' at night.

Chrome is installed, no media server drain on the stats page.
[Samsung Galaxy S7 Real Life Review] takerhbk:
I lose around 5% overnight with AOD off.
[Samsung Galaxy S7 Real Life Review] maurit43:
hello, i wanna ask something.. someone feel that the battery started to drain queckly since you bouth the phone? my mobile has 6 mounths and Im feeling the drain battery is more than before

thanks you !
[Samsung Galaxy S7 Real Life Review] svfusion:
After reading this thread,

I've uninstalled Chrome

Disabled Google Photos

Rooted + Fixer and Debloater Script

Installed Exposed

Disabled Diagnostics

Hopefully, this will help. I've down 20% in just two hours.
[Samsung Galaxy S7 Real Life Review] abhijitcp:
so came across a reddit post suggesting that disabler apps may not help contain battery drain much since the disabled apps continuously try to get back up working...so uninstalled ez disabler yesterday and removed all apps on greenify and just use greenify for aggressive doze...guess what...no change in battery drain today...whatsoever...but then that doesn't mean it is better...android system is top with 21%. 7 hrs on battery, 72% left, SOT 1 hr...
[Samsung Galaxy S7 Real Life Review] maurit43:
Hello how are you? Im feeling the drain battery es quickly than before, few days/months ago. Im using MM.

Now is:

4%

8 hous

4 hours 18 minuts screen

Android system: 2 hours

Is normall?

Thanks youu!
[Samsung Galaxy S7 Real Life Review] jerseyboy51:
Having the same problem with excessive battery drain (often it seems Cell Standby is the culprit, but not always). the only thing i can add that hasn't been mentioned is that my phone gets very warm during these times.

Frustrating that nobody seems to have any idea what the cause and solution is.
[Samsung Galaxy S7 Real Life Review] crash_194:
Cell standby would be what I would expect to be one of the highest battery users when not using the phone and not connected to a wireless network. If it is excessive though, normally a good indication that you have a poor signal.

In terms of the phone getting warm, I would suggest a factory reset if there is nothing obvious causing it. I'm far from an expert, but always good to exhaust the easy options first (fully appreciate a factory reset is a pain though!).
[Samsung Galaxy S7 Real Life Review] Balian67:
I question everyones "heavy use". I haven't had badass battery on ANY phone or ANY rom since CM7.2. I am a heavy user. Anyone else is lying. I get like 2.5-3 screen on. I got 7+ with CM7.2.
[Samsung Galaxy S7 Real Life Review] Sn0wFl4keZ:
My Standby drain is massive :( ..
[Samsung Galaxy S7 Real Life Review] StereoSteo:
I've had my s7 exynos SM-G930F for 3 weeks now and I lose about 10-12% overnight if I charge my phone and unplug it on 100% when I'm going to bed. This happens with or without AOD on. I don't understand the standby drain but that's my only complaint about the phone. Apart from that I love it :)

At the minute I have 3 hours 35 minutes sot relatively low brightness and it's on 39%. It's had days where that much usage had it on 10% so it varies a lot and I've factory reset it more than once.

It's acceptable to get about 6 hours sot or less if it's over a long running time but with it being an amoled screen I expected it to do better.

My Z1 got about the same sot and that's a power hungry TFT LCD then my Z2 had more than this can with its IPS but has 200mah more battery power.

Then again saying all that them phones didn't have 2 quad cores or a 2k screen and the GPU is much better in this by a lot too. This phone is way more powerful than them. :)

By the way the z1 and z2 would only lose about 3-4% overnight so it's not a signal issue and WiFi is always on as it was on them too.
[Samsung Galaxy S7 Real Life Review] CConn882:
Well, from everything I've seen in this thread, there doesn't seem to be a single universal answer to the problem. For my phone specifically, this is what I've noticed...

1. I have a lot higher standby drain with Wifi enabled. (probably because, whether at home or at work, my wifi's not the greatest).

2. Installing/disabling the bloatware doesn't seem to have much of an effect on battery life. Obviously, GPS is a big battery killer, but outside of that, no other singular app seemed to be a battery killer. And I could be wrong, I certainly didn't test it to be sure, but it seemed like the more I fiddled around with disabling apps, the worst my battery life got.

3. Doze (the owl - not the android app) helped my standby time exponentially. Without it and wifi on, I could have up to 5% an hour drain. With it, and wifi off, 1% or less per hour was happening consistently.

4. Didn't really notice any difference using Greenify.

5. Android OS seems to always run really high in Samsung phones. I don't know if they legitimately suck more juice or if it's just a reporting glitch, but where my Z3 would be like 30% screen, 12% OS, my S7 will be 27% OS, 21% screen. My general sentiment is to ignore the percentages. If your phone is getting around 5 hours of SOT, that's pretty good, no matter what the percentage might read.
[Samsung Galaxy S7 Real Life Review] StereoSteo:
I would get around 5 or 6 hours sot myself just browsing etc without playing games. I noticed the same thing with android os draining a lot and I'd lose 10 percent in about 10 hours overnight. So after factory resetting I still lost about 10% overnight but this time it was reported to be cell standby instead.

I think as the previous post says it's probably just a reporting glitch and the phone has to say something used up the battery if it wasn't the screen.
[Samsung Galaxy S7 Real Life Review] Cyn1:
2-3 days pure stand-by time on XenonHD Rom.
[Samsung Galaxy S7 Real Life Review] jack9865:
S7 battery drain

Has your problem solved?

I have an exynos galaxy S7 and I've updated to android 7 but it seems that screen-off (Standby) drains battery a lot

i was so disappointed when i do nothing and i lose my battery. I slept and when i woke up i realize that i've lost battery about 30 percent during 6 hour.
[Samsung Galaxy S7 Real Life Review] jack9865:
I made a back up with SmartSwitch and till now my problem has been solved.

Thank God
[Samsung Galaxy S7 Real Life Review] charliebigpot:
I'm on stock mm, not rooted yet, just used package disabler pro and lose about 2-3% during night. No wifi, no 3g, no bluetooth, no AED.
[Samsung Galaxy S7 Real Life Review] durveshthorve433:
i have too but it still dropped 0 percent in 7 hours, i have standby on, no notifications blocked, none of the apps put to sleep
[Samsung Galaxy S7 Real Life Review] takerhbk:
Aod drains 1% psr hour in standby because your device will not go to heavy doze mode.
[Samsung Galaxy S7 Real Life Review] jglass071:
I got my S7 around 3 weeks ago and my standby drain is huge as well, but super unpredictable. Sometimes it'll be good, sometimes bad. Sometimes I'll only get 2 hours of SOT because of the standby drain. I made a list of things I could do from this thread and the Edge standby drain thread, so I'll try and do some of those and see if I can make it any better... currently I'm at 53% battery and 1h 4m SOT.

G930F (Exynos)

Unlocked

Network: Three UK

WiFi is set to not be on during sleep when on battery. AOD is off, NFC is off. Location is set to battery saver.

The phone came with Android 6.0, I updated to 7.0 and today to the April security patch (which bought a small improvement). Since I have cleared cache partition and rebooted many times. I also live in an area with several nearby 4G towers however signal from each is very weak (often 0-1 bars) - there is a closer 3G only mast with a better signal that my S7 doesn't want to switch to. I could go through Mobile Data settings and disable LTE (switch to HSDPA only or similar).

+ Just checked. The 3G signal is just as weak as LTE +

I'm also using Nova Launcher, although saw a post on Reddit saying I shouldn't be using it because of battery life.

I use Greenify with the permission granted through adb so it can force aggressive doze but that doesn't seem to have helped. I have automatic hibernation in Greenify OFF because I saw that it harmed battery instead of improving it. Instead I check apps in Settings > Device Maintenance.

I use BK Disabler as well.

I've turned off most sync options, and most Samsung backup options. Google Photos is set to backup while charging only. Apps like Keep, Inbox and Flamingo for Twitter are set to send me notifications because I don't really want to lose some of the functionality of my phone, so not all sync or notification options will be disabled.

I also have uninstalled updates to Google Play Services and re-updated, and left the beta program.

I'm also using a custom font. Could battery drain be this? Someone said a theme was causing battery drain and performance issues for them.

Cannot post links as I'm a new user, but my battery stats are as follows...

50% battery exactly.

9% Screen [SOT 1h17m]

7% Google Services [CPU 18m55s; Stay Awake 11m17s; Connection Time 57m 2s]

5% Android System

3% Device Idle

3% Cell Standby

3% Android OS

2% Play Store

2% Chrome Dev

1% SystemUI

1% Slide for Reddit

1% Google App
[Samsung Galaxy S7 Real Life Review] *Detection*:
4G drains my battery a lot faster than WiFi, try leaving WiFi enabled 24/7

Fonts won't use any extra battery

Nova Launcher does not drain battery, it is my default launcher

Try a factory reset if nothing else works
[Samsung Galaxy S7 Real Life Review] jglass071:
I've tried the following from my list:

I haven't yet done:

I used the wakelock detector and found Google Maps auto-update had wakelocked my phone for just over 9 minutes, so I disabled that. But still, my phone drained 15% last night (around 7-8 hours) and today around 2.5-3% per hour. So far, my phone is again down to around 50% (and hasn't been charged since the battery stats were reset, at 99% battery) and I have 1.5 hours SOT (so 3h at 100% - a long way from the 4-5 hours I was getting just two weeks ago).

Could it be a hardware issue? I'm reluctant to reset because it's been so little time since I set the thing up, but the Nougat restore feature is useful, and it could easily have been an issue with the Nougat update itself...

Apps:

com.kmshack.autoset - Autoset

com.vibhinna.cpuspyfree - CPU Spy

com.uzumapps.wakelockdetector.noroot - Wakelock Detector

com.kunkunsoft.packagedisabler - Package Disabler

com.suyashsrijan.forcedoze - ForceDoze

com.oasisfeng.greenify - Greenify

edit: Could it be Greenify causing more problems than it solves? I've uninstalled it now, but doze wasn't starting as quickly as it does with ForceDoze, and battery was even worse when I had automated hibernation enabled. I've also restarted my phone again

edit2: I should probably disable Now on Tap, I have no use for it at all.
[Samsung Galaxy S7 Real Life Review] *Detection*:
I don't install any power saving / doze apps, I just let android control that, and my SoT is 5-7 hours depending on usage

It drains about 3-5% overnight (8 Hours)

I use a package disabler to disable KNOX and a few other things just to get them out of sight, along with scumbook that gets preinstalled now

OM Customize used to be a major drain for me on MM, not sure if it is still today but I disable it anyway

Here's my disabled apps