yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S7 Questions and Answers] faslane:
My S7 Edge has been killer. 45% left after 8-10_hrs.

---------- Post added at 10:18 PM ---------- Previous post was at 10:13 PM ----------

No S7 Edge drain here at all. Simply awesome.

---------- Post added at 10:20 PM ---------- Previous post was at 10:18 PM ----------

I leave mine on so it plays nice with Gear S2 and VR and have 4 Google emails all syncing every 30 mins. No issues
[Samsung Galaxy S7 Questions and Answers] neflictus:
Not sure if only the Qualcomm version has the problem. I experienced the same thing on a S6 Edge Plus (Exynos processor). Android System was draining battery like crazy in standby. If I used it continuously, I managed to get 6h of SOT. But if I left it alone, it would drain.

The solution was to root the phone (the phone already had Knox 0x1) and use Amplify to change the frequency at which android services were making background checks.

After I tweaked most of the services out there, I managed to get a drain of 1 - 2% for 8 hours. Couldn't deal with KNOX being tripped so I sold the damn thing.

Nothing else worked. Nothing. (tried 10 different firmware versions, debloated, disabled everything, used Package Disabler Pro, tried even Airplane mode).

The problem was that the phone didn't enter deep sleep mode, Android System being the culprit here. I think it's the same issue here. (rooted Samsung phones had this problem before - hence the deep sleep mode fix - funny cause these phones are not rooted, but hey.... surprise mf).

Hope the S7 isn't going to disappoint me like that.
[Samsung Galaxy S7 Questions and Answers] AKW:
Yo [MENTION=1264662]faslane[/MENTION]. What settings did you change out of the box? Maybe if I can figure out the difference between your setup and mine I can figure out where the drain comes from.
[Samsung Galaxy S7 Questions and Answers] PunishedSnake:
I'd like to see sot numbers from an exynos gs7

I'm getting 6 to 7hr sot which is 2 to 3 more than I got with the gs6
[Samsung Galaxy S7 Questions and Answers] AKW:
So I just had a thought. I checked my data usage, and it appears that "Google Play Services" I burning through data like there's no tomorrow. It's used almost an entire GB of data in less than a week, which is crazy. I'm thinking that somehow these two issues may be linked. I just restricted background data and I'll run it for the rest of the day to see if the Android System drain chills out. I just hope that I'm not crippling the functionality by doing so. I'll report back with my findings.

Edit: Here are some screenshots. I basically stream music through Pandora and TuneIn all day at work, and watch Netflix on my lunch break, and Google Play Services still blows their data usage away.

Edit 2: Actually I just remembered that I used my phone as a hotspot for about two hours in the last few days, and I'm thinking that's the data usage Google Play Services is reporting. Still, for the sake of investigation, I'll run it with background data restricted and see if there is any noticeable difference without crippling the functionality of the phone.
[Samsung Galaxy S7 Questions and Answers] guaneet:
It might be related to Google Drive since it looks like they have similar data usage. Might wanna check that out since Google Drive relies on Google play services to operate. Also track your data usage and compare day in and day out
[Samsung Galaxy S7 Questions and Answers] AKW:
I access Google Drive several times a day and yesterday I downloaded about 180 photos to my phone, so that data usage doesn't really strike me as weird.
[Samsung Galaxy S7 Questions and Answers] faslane:
Really none bro. I tell my wifi not to always scan and not to notify when it's on but I tell it to stay on when screen off in case I'm downloading something and of course turn it off when I don't use it. I turn Bluetooth off unless using it but most of the day it's on and paired to headset and Gear S2. I turn my screen down to about 65-70% which is plenty bright unless I need more like when outside and all 5 email accounts are set to check/sync every 30 mins instead of like every 5mins...which is unnecessary for most. I don't keep a lot of home screens 3 at most. The more widgets you have pulling data etc the more data used and more battery as a result. And basically leave NFC and any other settings I don't need on off until I need them then back off again. That's about it nothing that special and never use power saving mode ever and get great life. WiFi calling is also left on full time.

Fas
[Samsung Galaxy S7 Questions and Answers] AKW:
Hm. Maybe the Wifi always scanning is the culprit. All my other settings are pretty much identical to yours, but I have Tasker control my radios. I also use the Wifi near state to Trigger Tasker actions, so I have mine set to always scan (like I did on my Note). I might try and turn that off and use another state or event to trigger my Tasker tasks.

I imagine that Wifi scanning would show up in Andriod System in battery settings. I'll run a test tomorrow and see if it makes a difference. Thanks for the info, brother.
[Samsung Galaxy S7 Questions and Answers] km8j:
Definitely not this. Issue occurs for me even with wifi off and I have all the scanning features off... I think that is. Any hidden?
[Samsung Galaxy S7 Questions and Answers] AKW:
Well in LP the default setting was set so that Wifi would scan even when Wifi is off for location purposes, but I can't seem to find the setting in MM. It used to be under Wifi>More>Advanced, but it doesn't seem to be there anymore.

[MENTION=1264662]faslane[/MENTION], how did you turn off Wifi scanning?
[Samsung Galaxy S7 Questions and Answers] stolben:
5 GhZ WiFi is a known battery drain on Marshmallow. I had battery issues in standby but switched to 2,4GhZ and that problem is gone for now. Doesn't really makes much difference, for me anyway. Also turn of all the stuff you don't need in the Advanced section. Lots of sensor related stuff in there and i guess this uses battery aswell.
[Samsung Galaxy S7 Questions and Answers] AKW:
Thanks for the suggestion, bro. The issue happens when not connected to wifi and wifi is off completely, so I don't think that's the case either. I've seen posts from people saying it even happens when they're in airplane mode, so that basically rules out anything that has to do with the radios (except wifi, since that can be on at the same time airplane mode is enabled), but since it also happens with wifi off, the only thing I can think of is wifi always scanning, which I haven't found out how to turn off yet.

Other than that, I'm at a loss. I'm eagerly awaiting root and xposed so I can use BBS and Amplify to identify and pin down the cause.

EDIT: Found the setting. It's under Privacy and Safety>Location>Improve Accuaracy. I just turned it off. I'll run it for today and see if it has any affect.
[Samsung Galaxy S7 Questions and Answers] stolben:
Well, often when i'm on 5GhZ the wifi icon is constantly showing traffic and battery drains quickly without doing anything to the phone and closing all running apps. Swapping to 2,4 removes this, for me at least. Read a post about it after googling yesterday.

There is an option to turn of the search for nearby devices but not sure if this is only for BT. The translation is a bit hard to understand lol.
[Samsung Galaxy S7 Questions and Answers] AKW:
I believe it is for BT. Also, under the "Improve Accuracy" settings section, there is a BT Scanning option as well as the Wifi scanning option. I turned both off so hopefully this will at least help with the Android System drain.
[Samsung Galaxy S7 Questions and Answers] km8j:
I had improve location turned off since day one. doesnt do anything
[Samsung Galaxy S7 Questions and Answers] stolben:
Alright! Hope you can fix your battery drain. I'm at about 0,5%/hr drain at night and can't really complain :good:
[Samsung Galaxy S7 Questions and Answers] x3nt0r:
Maybe this helps someone with a high battery drain.

I have the Exynos Version connected to an Asus Router wich is capable of b/g/n and ac Wifi standards.

The first night i had it connected to the ac network and my battery went down -30% in 8 hours - the phone was in standby with the AOD.

Last night i tried it with the b/g/n network and my battery only went down 7%!

Its a known problem with some AC capable router chipsets ...
[Samsung Galaxy S7 Questions and Answers] thatotherguy..:
Dam mine android system is 1417mhz
[Samsung Galaxy S7 Questions and Answers] cesachse:
Weird '10239' draining my battery

I have experienced very poor battery life with Android System being the culprit generally but today I have a weird 'app' draining my battery, it is 10239, it has the little android symbol next to it so its probably a system app but it has drained 33%, Android system is at 16%, Android OS is at 12% and Screen at 7%. Anyone know what 10239 is?
[Samsung Galaxy S7 Questions and Answers] mnphonguy1:
I have almost the exact same usage and issues with my Android System. What is causing this????
[Samsung Galaxy S7 Questions and Answers] thatotherguy..:
I'm not sure I got a lot more today
[Samsung Galaxy S7 Questions and Answers] Lucoso46:
Try with disabling Location.

or follow the same ticks and trips used for s6 for less power consumption.
[Samsung Galaxy S7 Questions and Answers] km8j:
Don't think this can be fixed with "tips and tricks". This is a issue. Taking away location is crippling phone
[Samsung Galaxy S7 Questions and Answers] Lucoso46:
So i don't know how to fix this guys, maybe a factory reset or a wipe cache.

Or if you are rooted try another kernel if there is one. :) I saw some users reporting: no doze mode working or the phone doesn't go in Deep Sleep.

So i hope that samsung will optimise the S7 a little bit more
[Samsung Galaxy S7 Questions and Answers] km8j:
We have no root
[Samsung Galaxy S7 Questions and Answers] omeryounos:
Disable Facebook and messenger. Use the web version and check. I had same issue on S6. Seems like Facebook hides behind Android System and Play Services.
[Samsung Galaxy S7 Questions and Answers] km8j:
been off for me since day one
[Samsung Galaxy S7 Questions and Answers] mnphonguy1:
Same here. Android System and OS drain is not a result of FB for me and probably most folks. I just use the web version, it is just as good. I am really starting to get frustrated at this issue!
[Samsung Galaxy S7 Questions and Answers] offbeat81:
Does anyone have Google Photos/Amazon Photos/etc running that syncs your photos? I noticed that those apps were destroying my battery because I have so many photos on my SD but once that settled, my battery issues got better.
[Samsung Galaxy S7 Questions and Answers] Namtaru:
Just posting my experience so far. This is on my wife's S7, which is getting TERRIBLE battery life. Her almost 3 year old G2 with original battery was getting battery life than this. She's had the phone for 4 days now. On top of the Android System issue, she's having really weird charging issues.

Here is the Android System issue.

I know her phone habits very well (lots of facebook, pinterest, and texting), she's been on android since the beginning, and screen time has ALWAYS been her most power hungry stat. It's weird to see it so far down the list here.

On top of that issue, here is a screenshot of her phone being plugged into the fast charge for about an hour. It was actually LOSING battery while plugged in.
[Samsung Galaxy S7 Questions and Answers] neflictus:
It's a known snapdragon issue. Users with exynos processor get incredible battery life.
[Samsung Galaxy S7 Questions and Answers] MrJiM:
Me and your wife uses the phone about the same. Didn't use the phone so much today. But note that I have about half battery left still. [emoji12]

BTW I see that her 4g reception is bad. That may drain the battery.

Skickat från min SM-G930F via Tapatalk
[Samsung Galaxy S7 Questions and Answers] dbux:
S7 or S7E?
[Samsung Galaxy S7 Questions and Answers] barondebxl:
Exynos with heavy use
[Samsung Galaxy S7 Questions and Answers] dbux:
That's legit. That's what we can expect from S7 for now.
[Samsung Galaxy S7 Questions and Answers] barondebxl:
Yeah. It was half wi-fi hand lte. Lots of browsing, YouTube and music streaming. I made sure I used the phone normally without checking the battery stats during the day since it only was my second day with the S7 and wanted to see how the battery is. It's great
[Samsung Galaxy S7 Questions and Answers] dbux:
Could have monitored the CPU temp. also. Anyway how was the device in hand(hope without any cases) with all these heavy usage. Hot or warm?
[Samsung Galaxy S7 Questions and Answers] barondebxl:
I got a clear ultra thin spigen case on. Never got warm. Only time my phone got warm was when I initially installed all my apps. Since then it's been cool.
[Samsung Galaxy S7 Questions and Answers] dbux:
That's pretty impressive. Mine gets a bit warm though. I think all depends on room temp. a bit. But I really could monitor how the cooling system kicks in at a threshold value.

Mine is currently at 32-33C. ie. Minor load
[Samsung Galaxy S7 Questions and Answers] barondebxl:
Yeah man, not heat at all. This phone has blown me away since I have gotten it.
[Samsung Galaxy S7 Questions and Answers] dbux:
If you don't mind you can report back when ever you can the CPU temp. using the app 'CPU Temperature' under minor, moderate and heavy load.
[Samsung Galaxy S7 Questions and Answers] barondebxl:
Ok cool
[Samsung Galaxy S7 Questions and Answers] fredriks:
I have Exynos version and massive batterydrain when I'm on WiFi, 2,4 ghz or 5 ghz doesn't matter. I have a asus router. If I turn wifi off my battery is awesome in standby. When I'm on WiFi Android system and Android OS is in top of battery usage. Returned my first S7 because of this issue but my second one is the same, no difference at all.

My Samsung S6 works fine on the same home network. No batterydrain at all and both phones have exactly the same set up
[Samsung Galaxy S7 Questions and Answers] cavags5:
You could try other country firmware just to see if is different.

What's yours. ?
[Samsung Galaxy S7 Questions and Answers] fredriks:
I think I have NEE version if this what you mean [emoji3]

For now I have solved it by disable WiFi always on.

I don't have the skills to fix with firmware [emoji15][emoji15][emoji1]
[Samsung Galaxy S7 Questions and Answers] cavags5:
Its easy and don't mess with your warranty.

Go to sammobile choose your model and check the firmware and they have all explained how to do it.
[Samsung Galaxy S7 Questions and Answers] KoRoZIV:
Exynos s7, Asus ac56u router, using ac of course

I'm returning the phone, crap display, everything else is ok.
[Samsung Galaxy S7 Questions and Answers] fredriks:
Looks great! How about standby on WiFi? I have no other issue with my S7, only standby batterydrain on wifi

Probably a setting in my router I have missed that will solve this issue. Sadly I don't find it
[Samsung Galaxy S7 Questions and Answers] javitolopez69:
Wooouuhhh.great battery.in s6 5 Hours screen on
[Samsung Galaxy S7 Questions and Answers] KoRoZIV:
No issues in stanby, Wi-Fi or 4g, tested both. Didn't care about it realy, I never stopped anything for night. Just for the 4g test I disabled Wi-Fi for one night. The sot for the 4g only charge cycle was only 6h30min with 15% battery left.

Please note that until now I used the phone mostly indoors, not in the sunlight, auto brightness. Location on high accuracy, Google now, tapatalk, browsing etc, no gaming. Litle music and videos.
[Samsung Galaxy S7 Questions and Answers] gleggie:
I have the SD820 variant, and was getting only around 4 hrs SOT. Yesterday Verizon pushed out an OTA that addressed "connectivity issues," which has seemed to improve my battery life. Also, if you use Facebook and messenger a lot, I would highly recommend uninstalling them both and using a facebook alternative app like Metal or Toffeed as they are much better applications and don't drain RAM and battery as much as the stock facebook app. Other than that, I just use the non-root version of Greenify. If we had root, we could dramatically improve battery life, so hopefully something is figured out.

Today i had the first day getting over 5 hrs SOT (almost hit 6), so hopefully this is a good sign.
[Samsung Galaxy S7 Questions and Answers] mklpickle:
Has anyone experienced degraded battery again after May update? SD820 T-Mo. Android System once again the highest battery consumer.
[Samsung Galaxy S7 Questions and Answers] 007zzz:
greenfiy will drain your battery a little when you standby for a whole night, the symptom is after you wake up, your will see Android system is the most power drains. I think it is the aggressive doze matters. System can not into doze continuously because the aggressive doze will wake the phone time and time again according to the software description. (it all based on unrooted phone)
[Samsung Galaxy S7 Questions and Answers] brochs:
As you can see from my posting I have 10h 24min "Stay Awake" time of 11h 37min on time. This is degrading my battery life time considerably.

Really wander what this is.
[Samsung Galaxy S7 Questions and Answers] brochs:
I did a full reset. First cycle after charging was very good, but after second time of charging Android System is again draining the battery.
[Samsung Galaxy S7 Questions and Answers] brochs:
The solution for me was to deactivate "Nearby device scanning".
[Samsung Galaxy S7 Questions and Answers] sicutero:
hmm, i'm gonna try this out.

thanx for the tip :)
[Samsung Galaxy S7 Questions and Answers] sicutero:
nothing changed for me :(.
[Samsung Galaxy S7 Questions and Answers] iridaki:
This is because a full reset solves nothing. If you don't know exactly what caused the drain, it means you can't fix it, thereby it will happen again once you set your phone up. I've had my Note 4 gor 18 months and not once did I factory reset it -and that's with numerous upgrades from KitKat -> Lollipop -> Marshmallow and playing with custom kernels.

My advice, which you should take with a grain of salt, as is the case with everything you read on the internet, is to set up your device as per your needs: install the apps you want to use and enable the features you want. Then go through the settings menu and look for settings that you suspect may cause battery drain, e.g.: when location history is enabled, Google polls for the device's location at regular intervals. So if you don't need that, disable it. If a feature sounds like it will drain more battery, it usually does, it's common sense really. Another thing I do is to look for high quality apps. Again, if it looks bad, it usually is badly coded as well (with the exception of Titanium Backup ?).

Of course it is difficult for anyone to provide solid advice on this matter, as you're the only one who is familiar with your usage patterns, so that was just my 2¢.
[Samsung Galaxy S7 Questions and Answers] brochs:
I have found the problem to become active after charging the unit. Now I do a restart after charging and the problem with battery drain no longer happens. I guess Samsung have to fix this at some point, but I have managed to avoid disabling every useful feature by doing a restart after charging.
[Samsung Galaxy S7 Questions and Answers] uacode:
Disable google backup and restart phone
[Samsung Galaxy S7 Questions and Answers] avatar_ro:
Are you for real? what was your initial issue? and how did it help with a restart after a full charge?
[Samsung Galaxy S7 Questions and Answers] brochs:
Yes, I'm for real, what a strange question! I found my S7 to have very high battery drain when in standby, Android System was active almost all the time. Trying to disable different features in on the phone didn't seem to help. Now I restart the phone every time I have charged it and the problem with battery drain is gone. FYI I have Google backup active on my unit. Thank you for worrying if I am for real.
[Samsung Galaxy S7 Questions and Answers] avatar_ro:
you are for real :)) Thanks for the update. I will try the same .. cheers
[Samsung Galaxy S7 Questions and Answers] CraigNX:
It's always better to post the screenshot of the battery graph(scroll-shot) and SOT also please the mention the model number of the device too to say whether everything is normal.
[Samsung Galaxy S7 Questions and Answers] PunishedSnake:
Can't find running apps on the s7
[Samsung Galaxy S7 Questions and Answers] KAsp3rd:
Settings>Smart Manager>RAM
[Samsung Galaxy S7 Questions and Answers] km8j:
Something in Android System is doing it. Turning off Google Now and the quick connect stuff did nothing for me. I don't believe BBS or GSAM can give us any additional stats without root right? Is anyone going to take the plunge and factory reset to see if it gets fixed?
[Samsung Galaxy S7 Questions and Answers] Tekogremista:
Something is wrong
[Samsung Galaxy S7 Questions and Answers] km8j:
Correct. We all know going to Samsung or T-Mobile support wont do anything. Someone should Tweet both of them to indicate there is a pretty serious bug.
[Samsung Galaxy S7 Questions and Answers] avatar_ro:
You had over 4h of SOT, that's good.

The other drain seems very bad indeed.
[Samsung Galaxy S7 Questions and Answers] km8j:
Anyone want to take the plunge and factory reset?
[Samsung Galaxy S7 Questions and Answers] avatar_ro:
hahaha, I would do that, but my phone has not arrived :))) i envy all of you who got it earlier than normal preoder, you deserve what you get :laugh::laugh::laugh:
[Samsung Galaxy S7 Questions and Answers] stierney:
Guessing these users are all US three orders? They seem to have ignored the release date and shipped their devices early ;p
[Samsung Galaxy S7 Questions and Answers] km8j:
Hmm. So I just booted into Recovery to wipe the Cache partition and it seemed successful. On reboot though, never got the "optimizing apps" where it builds the cache back. Is that normal?
[Samsung Galaxy S7 Questions and Answers] supercakefish:
I've seen a couple Exynos folk from Scandinavian countries but it's mostly just the lucky Americans so far.
[Samsung Galaxy S7 Questions and Answers] Th3Bill:
So far, I will admit that my battery life has been pretty un-spectacular overall compared to some of my past phones where I could get a day and a half to two between charges. So far, first charge was 16.5hr total (3.5SOT) when it hit 15%. This charge so far is at 17hr (only 1.5hr SOT but 2hr Spotify and 1hr call both thru Bluetooth) and I'm at 34%.

Both cycles were with the "Always-On" function active. I'm gonna ride this charge down to 15% then charge it up and test it with the Always-On turned off.

As in everyone elses case, Android System and Android OS are my 2 largest drains.
[Samsung Galaxy S7 Questions and Answers] Tekogremista:
Just reset the phone. Let's see if works but still I'm getting more then 4 hours soc
[Samsung Galaxy S7 Questions and Answers] supercakefish:
Snapdragon or Exynos?
[Samsung Galaxy S7 Questions and Answers] Th3Bill:
Snapdragon.

Don't get me wrong, I actually love the device so far. Even if the battery life is slightly less than superb, I can't ignore the fact that it took less than an hour to charge from 15-100% yesterday.
[Samsung Galaxy S7 Questions and Answers] zcubed:
Looks like the 1.5 hours of GPS on time may be the problem in your case. I have zero GPS time on mine so there must be some app constantly locking your location and draining battery.

Clearing my cache(1.5GB!!) and disabling various useless samsung and t-mobile apps has done wonders for me. Also moved to Nova Launcher.
[Samsung Galaxy S7 Questions and Answers] alexh516:
guys, i may have figured out at least the reason for my android system drain... Gear VR service, (i don't own the gear vr yet, never plugged it in or set anything up)

using 13% of my battery:

edit: nevermind, all apps accessing the system seem to show the same usage. They must be bundled together and this percentage just shows the system usage.
[Samsung Galaxy S7 Questions and Answers] km8j:
What did you disable exactly?
[Samsung Galaxy S7 Questions and Answers] Tekogremista:
I reset the phone, wiped cache, and still my android is the number one in battery. Disabled location and wifi and Bluetooth to see if was it, but no. still android system the first battery drainer