yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S7 Edge Questions and Answers] Simone:
No, I just downgraded to APC8 and everything is OK. I flashed AP/CP/BL/CSC and did a Factory Reset and Cache wipe. I have yet to see the battery life everyone is mentioning.
[Samsung Galaxy S7 Edge Questions and Answers] anibalhuneeus:
BTU APC8?
[Samsung Galaxy S7 Edge Questions and Answers] Simone:
Yup, BTU APC8 exactly.
[Samsung Galaxy S7 Edge Questions and Answers] anibalhuneeus:
Good, let us know

I am using it and both android OS and Android System are at reasonable percentages
[Samsung Galaxy S7 Edge Questions and Answers] Facuu:
Could you show android system and os? To see how much they kept the phone awake and how much mah did it cost so we can analyze it along with the sot
[Samsung Galaxy S7 Edge Questions and Answers] anibalhuneeus:
Sure, let me finish the complete cycle and I will post with the final results
[Samsung Galaxy S7 Edge Questions and Answers] Simone:
First full charge until 71% with APC8 with decent screen-on time. WiFi on, watching Youtube, browsing and downloading on Chrome, downloading on Play Store.
[Samsung Galaxy S7 Edge Questions and Answers] ogrillion:
I tried to downgrade on my s7 flat version, I downloaded the firmware from sammobile website. I put all the files in the appropriate place and kept getting fail (Auth).

Googled about that and I found out you can't downgrade the bootloader so don't include the BL file.

That let me get further but then when I hit the flashing system part I got another error. sw rev check fail : system

I know this is the s7 edge forum but the s7 flat doesn't seem to be very popular. My knowledge of Samsung is very limited, typically always had a Nexus or a unlockable bootloader phone.

My gut tells me the firmware I downloaded from sammobile might have been bad. Worst part is the whole process broke my phone and I had to emergency restore and also wiped my device.

Thanks for the help
[Samsung Galaxy S7 Edge Questions and Answers] cokbok:
I don't think what you say is correct regarding the BL. I just downgraded and I also included the BL during the downgrade process. I used Odin, if that matters. My first download attempt also resulted with a bad archive so had to download it once again.
[Samsung Galaxy S7 Edge Questions and Answers] ogrillion:
Yeah I know barely anything about Samsung Odin, I googled the error and found an XDA post for the s3 or 4 so it may be outdated / wrong.

I will redownload and give it another shot thanks.

Edit: just finished the download and the new file is about 120mb smaller and the checksum is different. Wish Sammobile firmware site had file sizes or checksums to know of I downloaded it correctly.
[Samsung Galaxy S7 Edge Questions and Answers] macke909:
Has anyone just tried factory reset? And if so what was the result?
[Samsung Galaxy S7 Edge Questions and Answers] Elhombree:
Just what im wondering, but I believe it won't solve it. It has to be samsung who fixes it.

Im currently on the verge of factory reseting the device. I have to many issues at the moment. I will probably wait until june update.
[Samsung Galaxy S7 Edge Questions and Answers] Zeffir:
I get about 9 hours of SoT on my device, so that sounds about right.
[Samsung Galaxy S7 Edge Questions and Answers] jrwingate6:
I was experiencing super high drain before I did a factory reset. I'm talking 10% in 15 to 20 minutes and 22% overnight while the phone was just sitting on my nightstand.

We will see how it does now and over the next few days.
[Samsung Galaxy S7 Edge Questions and Answers] Zeffir:
Is there any battery app that can pinpoint the system process that is draining the battery? Or would we need root for that?
[Samsung Galaxy S7 Edge Questions and Answers] ingenious247:
I don't really have an issue with the battery stats showing Android System with a high percentage, because it's not affecting the battery life IMO. Yesterday I had 19 hours total with 6 hours SOT

This coming from a phone smaller than my Note 5.. the battery in this thing is amazing and they fit it in a smaller phone. Kudos to Samsung
[Samsung Galaxy S7 Edge Questions and Answers] GeneralGiap:
getting about the same usage 10-11 hours (with me really limiting myself). I contacted Samsung today and they said they were not aware of any issues with stand by drain. Samsung said to restart in "Safe mode" to see if third party apps were causing the drain...still observing but it appears that it is draining slower...my dose is actually working now (I think)...

BTW: i turned on power saving mode this morning (right off charger) and it worked wonders but we should not have to limit our new toys! I turned off the power saving mode before activating safe mode to really see if any third party apps were messing with it.

s7 Edge, SD820, Sprint Network

---------- Post added at 09:44 PM ---------- Previous post was at 09:39 PM ----------

What version do you have? SD or Exynos?
[Samsung Galaxy S7 Edge Questions and Answers] squallz506:
Seems kinda high, but doesn't really affect my usage.
[Samsung Galaxy S7 Edge Questions and Answers] jrwingate6:
There is definitely something wrong with the SD version of this phone and it's standby time. I have already done a reset and while that helped a little bit, there are still issues regarding the battery.

Sometimes after my phone has just been sitting on the table for 30 minutes, I'll pick it up and it will be slightly warm. Not cold like it should feel. This doesn't happen every time but definitely a couple times throughout the day.

I haven't even loaded all my apps on this phone yet since I'm trying to get this battery drain under control with minimal apps installed.

It's a shame Samsung would release a phone with so many bugs. Everything from battery drain to sync issues and over saturation during games causing extreme in game lag. Luckily I fixed it by removing two packages but what's the average user supposed to do? This may be my last Samsung phone and I really don't want to go back to iOS.
[Samsung Galaxy S7 Edge Questions and Answers] sweets55:
The average user probably doesn't even know the issues you have. I haven't seen to many not happy with the S7. I don't see any other manufacture giving away so many promo's. I'll be getting all this free. Gear VR with like 5 free games, Netflix for a year, wireless charger, and $30 Samsung Pay. That's like $330 free. :D Good luck getting that with a iPhone.
[Samsung Galaxy S7 Edge Questions and Answers] jrwingate6:
I could care less about free stuff. All I want is my phone to work correctly without sucking down the battery and lagging during Hearthstone.
[Samsung Galaxy S7 Edge Questions and Answers] sweets55:
Return it if your not happy bra. I'm owned a ton of phones including the iPhone. S7 battery life is at the top of the list in battery life. Everyone does different things that effect the battery life though.
[Samsung Galaxy S7 Edge Questions and Answers] theneighbor:
This is one of the buggiest experiences I've had with any phone.
[Samsung Galaxy S7 Edge Questions and Answers] jrwingate6:
Agreed
[Samsung Galaxy S7 Edge Questions and Answers] Eran Says:
Had the same issue with my Note 4. Hoped it would be different on the S7. I know something fixed it but i can't remember what it was. Thinking maybe app optimization. Hopefully after a few days it calms down.
[Samsung Galaxy S7 Edge Questions and Answers] jrwingate6:
Is anyone else getting this kind of WiFi drain? Is this normal?
[Samsung Galaxy S7 Edge Questions and Answers] Eppidemic:
It's Google Now and Google cards. It's constantly updating in trying to give you routes Homer to work. Turn that off and what your battery Skyrocket
[Samsung Galaxy S7 Edge Questions and Answers] laureanop:
I have never used Cards. It's the OS or the kernel demanding CPU time ( foreground and background)

---------- Post added at 10:17 PM ---------- Previous post was at 10:02 PM ----------

Idle drain and battery usage while browsing internet are atrocious for a phone with a 3600 mha battery. ( not to mention the SD card unmount issues). Eyeing that 14 day return window...
[Samsung Galaxy S7 Edge Questions and Answers] jrwingate6:
I just tried disabling Google Now so we will see how it does. Something tells me you're right about it being The OS and Kernel demanding the CPU power.

It's definitely more noticeable when the phone is sitting idle since we usually don't expect a 5% drop every hour.
[Samsung Galaxy S7 Edge Questions and Answers] laureanop:
It's the strangest battery behavior I've seen in my 12+ Android devices I've owned. SOT, if you use the phone for long periods of time is excellent, but the idle/sot combo in relation to the giant battery size is absolutely awful. And I hate this unpredictable behavior!
[Samsung Galaxy S7 Edge Questions and Answers] jrwingate6:
I definitely agree with that statement. I've owned more phones and tablets than I care to remember over the last 6 years and this one by far has the wonkiesf battery life.
[Samsung Galaxy S7 Edge Questions and Answers] emptydream:
Chat with Samsung representative.

Refuse to face the problem, keep giving random explanation which doesn't make sense!!!

You are now chatting with 'Krishna J'. The reference number for this chat is 4306170297. There will be a brief survey at the end of our chat to share feedback on my performance today.

Krishna J: Hi, thank you for contacting Samsung Technical Support. How may I help you today?

oliver: Hi m

Krishna J: hello, Oliver.

oliver: I am experiencing high android system drain on battery as everyone else does with us version

oliver: It seems like only snapdragon processor is having this problem unlike exyno version..

Krishna J: Not to worry, I will look into this right away.

Krishna J: Are you referring to the Phone Galaxy S7 edge (SMG-935T)?

oliver: Yes

Krishna J: Thank you for confirming.

Krishna J: Oliver, for how long you are having the battery back up once it is fully charged?

oliver: what you mean by battery back up

oliver: Also I would like to provide this website as referring.

oliver: http://xdaforums.com/s7-edge/help

Krishna J: I mean, for how long it is staying once it is fully charged?

oliver: As you can see almost everyone with us version. T-mobile, verizon Att all experiencing the same issue. However, European version is totally fine which uses different processor.

oliver: My screen on time is constantly less than 4 hour

oliver: barely get me through a day.

oliver: I don't really use my phone

oliver: while i sitting on the desk working the battery just keep dropping.

oliver: it will always shows 40% of battery consumption is android system 16% isandroidOS

oliver: then is the screen

oliver: android system will use 1556 mAh battery or more by the end of the day

oliver: I tried factory reset. restart.

oliver: Nothing works

Krishna J: Oliver, almost every Android Phone battery consumption is mostly used by the Android System and Android OS.

oliver: Not what I have seen

oliver: screen should always be on top

oliver: I have use smart phone since 2010, I changed about 10 smart phone all android

oliver: I never experiencing this kind of behavior

Krishna J: In the S7 ad the S7 Edge, the screen is specifically designed to consume less power.

oliver: and as I have referred. It is not just myself find it is a issue

oliver: It doesn't explain the other model can get 6 to 8 hour Screen on time while our version only get less than 4 hour

oliver: also other version screen is always on the top

oliver: I couldn't justify this difference

Krishna J: Oliver, the Phone is specifically designed to get the maximum performance ever from a Samsung Phone till date.
[Samsung Galaxy S7 Edge Questions and Answers] saketkutta:
Yes there's no effect on it. Only thing on s7 is to go back to older firmware. On s6 edge i haven't found yet. But my regular s6 I don't have this problem though.
[Samsung Galaxy S7 Edge Questions and Answers] ssgunner20:
I factory reset last week for another issue and battery may have only improved just a tad. Previously i would get about 3 1/2 hrs + of sot. After the reset i get about 4+ hrs of heavy use. Well that amount of woukd show the % at 30 or so. What ive been doing lately is not charging all they way to 100%. Charge only to about 85-89%. Currently at 2d 2h on battery and 7hrs of sot.

I also have done cache wipe/clear for system and apps.
[Samsung Galaxy S7 Edge Questions and Answers] Nemaides:
Quick question, I tried downgrading to APC8 from ADP8, but it gave me a REV binary error, the one that triggers when you try to downgrade apparently. Is this because the T-Mobile variant can't be downgraded? Did I do something wrong?

Sorry if I'm asking dumb questions that have already been answered.
[Samsung Galaxy S7 Edge Questions and Answers] ogrillion:
Hoping someone else answers you too that knows more. I had the same thing I read on an old XDA post for an s5 or something that you can't downgrade the bootloader. When I didn't add the BL file to Odin I got a little further, but it failed flashing the system. Few posts above I was told that this is incorrect you can downgrade the bootloader. So idk.

My thought is that I had a bad download, because I redownloaded the firmware and it's a different size. However I work tonight and haven't tried to reflash
[Samsung Galaxy S7 Edge Questions and Answers] Simone:
Hi, i just flashed APC8 a while ago coming from the APEK, the latest SM-G935F firmware on my Exynos variant. I flashed AP/CP/BL/CSC and did a factory reset and a cache wipe after downgrading. No errors and battery life is absolutely better. Hope this helps a bit.
[Samsung Galaxy S7 Edge Questions and Answers] Nemaides:
Excuse the dumb question but...

Er...

How?

Are you rooted? Because I simply cannot and I keep getting the Binary error when I flash everything.
[Samsung Galaxy S7 Edge Questions and Answers] Simone:
Nope, I'm not rooted. Have you tried downloading Odin again?
[Samsung Galaxy S7 Edge Questions and Answers] kreativegeek:
I see random instances of battery drain caused due to Android OS, have not nailed the exact cause yet.
[Samsung Galaxy S7 Edge Questions and Answers] moulip:
Any hints or thoughts on my case ? My S7E is the Exynos one on the latest firmware APD1. Non root no modification of whatsoever.

Thanks mates ;)
[Samsung Galaxy S7 Edge Questions and Answers] Nemaides:
It was a fresh download of Odin just for this. I mean I'll try it again just to be sure but... I don't have high hopes.

What version did you downgrade from?

Edit: I re-downloaded everything and tried again. Same error.
[Samsung Galaxy S7 Edge Questions and Answers] sahil sharma:
Yes for me the rest did work. I have posted better results in earlier posts.

Just reset the phone. and also format your sd-card (to avoid any mediaserver battery drain).

I have my AOD off, Google backup /sync (manual), edge off (most of the edge apps are paid). display stays at 50%, and screen time-out is 15%

In the application manager - i disabled the FB app (this has helped so much). i use chrome for FB now. have disabled most of the apps which i dont use regularly. the only social media apps i have are Whatsapp and Xda-labs. For music i use Spotify and movies i have cinema box. Other that that I dont have any apps as of now. Will try some games. Also i use the material dark theme from the store. Also Play store apps are set to manual updates.

battery life has improved considerably. Android System is at a constant 12% with Android OS at 6-7%.. Overnight drain is 4% with Wi-fi and mobile data on. I keep location off unless required by some app. And i try to use bluetooth and wifi for location with location accuracy disabled.

One very important tip. Dont charge your phone to 100%. Incase you do, make sure you restart the phone as soon as you unplug. Trust me this step is a game-changer.
[Samsung Galaxy S7 Edge Questions and Answers] cokbok:
---------- Post added at 02:26 PM ---------- Previous post was at 02:24 PM ----------

SamMobile download sucks. I get errors extracting files even if the download completes. I found the firmware on a Russian site and downloaded at full speed. I would have paid for a pro account on SamMobile but PayPal does not serve in my country at the moment. Make sure you have the latest version of Odin and pick HOME_CSC for the CSC input.

---------- Post added at 02:29 PM ---------- Previous post was at 02:26 PM ----------

I downgraded to an old Turkish firmware yesterday and the battery issue remains. Full wipe, etc does not help. Something keeps the phone awake.

I agree with the above post about charging to 100%. This thing usually happens right after you charged the device to 100%. Just have no idea what is the root cause yet.

I believe it is Samsung to fix it.
[Samsung Galaxy S7 Edge Questions and Answers] L4s7Re4lG4mer:
Samsung = Samsucks I regret spending my money on this crapy phone
[Samsung Galaxy S7 Edge Questions and Answers] Facuu:
I understand (at least for reading the sammobile forums) that a full wipe is recommended when flashing another firmware so they literally say you should use CSC and not home_csc . I understand that if you have an unbranded phone the CSC is just useless. At least in my country it is for sure
[Samsung Galaxy S7 Edge Questions and Answers] quarintus:
So there is a new update comming from samung: APF. Who knows! Maybe they fixed it this time? At the moment only brought online in france. But it's possible to install on other CSC devices.

Anyone caring to try the update? I don't feel like leaving the update I am on now :P And even am not able because I'm not at home.

http://xdaforums.com/s7-edge/how-to/official-stock-firmware-update-odin-t3335065/page130
[Samsung Galaxy S7 Edge Questions and Answers] MickyMax:
I just flashed it and my S7 is fully charged. :)
[Samsung Galaxy S7 Edge Questions and Answers] sahil sharma:
Waiting for you review on battery drain. I pray Samsung fixed it.
[Samsung Galaxy S7 Edge Questions and Answers] dave7802:
Screen on time. 3 hours 48 minutes.

This is a very heavy usage.

Bluetooth on all day, listening to music all day.

9am-6pm

Various gaming totaling up 2 hours

Battery drain is more excessive here, as my wake lock is very hight due to Bluetooth and music streaming.

But give you a idea of decent battery life with Bluetooth active and connected streaming music all day long.

System is only 9%

Weekends i dont notice the battery, I don't use Bluetooth over the weekend. So by the time am going to bed am on around 50%

Still alot of gaming, news reading and so on
[Samsung Galaxy S7 Edge Questions and Answers] Facuu:
Is this good or not? Still android system is kinda high
[Samsung Galaxy S7 Edge Questions and Answers] gettinwicked:
Seriously? You are going to get around 55 hours on one battery charge. What's the problem here? Who cares what any of the applications/os/whatever says as far as percent when you are getting 30+ hours on a charge!

Btw, 15% is pretty good anyway ;)
[Samsung Galaxy S7 Edge Questions and Answers] L4s7Re4lG4mer:
Lol this is absolutely not a relevant information. He is in rouming and all apps that do some stuff and couse wakelocks are disabled so there is noyhing which can drain your battery.
[Samsung Galaxy S7 Edge Questions and Answers] Facuu:
Im not in roaming. There's an Argentinian company using the cells of another company so i just have to activate it to make it work, but it's not real roaming as im not even in a different state
[Samsung Galaxy S7 Edge Questions and Answers] Cst79:
Anyone on the new APF2 firmware ? I read that it fixes some battery-related issues, from 3 different users in the firmware thread.

If you have it, please post your Android System drain percentage !
[Samsung Galaxy S7 Edge Questions and Answers] Simone:
I'm curious as well.
[Samsung Galaxy S7 Edge Questions and Answers] moulip:
Hello,

Here's my graph on APF2. Only 13 mns SOT, used Podcast Addict for 1 hour and that's it.
[Samsung Galaxy S7 Edge Questions and Answers] Simone:
So... is this a good thing or bad? [emoji23]
[Samsung Galaxy S7 Edge Questions and Answers] anibalhuneeus:
Seems bad in my opinion
[Samsung Galaxy S7 Edge Questions and Answers] moulip:
Not sure :( I am not very happy with the battery lasting. I'd say that I don't see many differences.
[Samsung Galaxy S7 Edge Questions and Answers] Simone:
Damn, so I'm staying in APC8.
[Samsung Galaxy S7 Edge Questions and Answers] anibalhuneeus:
APC8 still seems to be the king of firmwares
[Samsung Galaxy S7 Edge Questions and Answers] cavags5:
For you know is firmware really works you need to reset the phone and flash the correct CSC then you see the differences, and the battery is always better the first 2 charges then only go down.

I m already tired of flashing.

I see nothing improve.

Im stick with APC8,

And does the new update has the same security patch with the 3rd party apps?
[Samsung Galaxy S7 Edge Questions and Answers] anibalhuneeus:
I always flash the whole pack (AP/BL/CSC/CP)
[Samsung Galaxy S7 Edge Questions and Answers] cavags5:
The only CSC file will reset the phone, i think is always better like that.
[Samsung Galaxy S7 Edge Questions and Answers] Cst79:
It is just too early to tell anything.
[Samsung Galaxy S7 Edge Questions and Answers] moulip:
All right then, let's wait 1 or 2 days.
[Samsung Galaxy S7 Edge Questions and Answers] cr0wnest:
I seem to have fixed my 5 GHz wifi battery drain by changing the TCP congestion algorithm from bic (default) to Westwood. I've been using it for several hours so far and all is good. My phone remains cool and idle battery life seems to be stable, not draining 10% in 30 minutes.

I'll need to test it out more but so far results seem positive. :) for those having battery drains while connected to a wifi network, especially 5 GHz networks, try using a different TCP congestion algorithm like cubic or Westwood and see how it goes.
[Samsung Galaxy S7 Edge Questions and Answers] MickyMax:
How to change it?
[Samsung Galaxy S7 Edge Questions and Answers] cr0wnest:
You need root access first. Then use a kernel configuration app like Kernel Adiutor or trickster mod to change it.

Not sure if you can change it via ADB without root though.
[Samsung Galaxy S7 Edge Questions and Answers] Cinco5:
I just replaced mine under warranty (mushy power button) and it came with APB4 and is working exactly like it should.
[Samsung Galaxy S7 Edge Questions and Answers] orlans21:
hows the battery life on APB? Im in canada and there is no APC firmware. Just APB and APD
[Samsung Galaxy S7 Edge Questions and Answers] nick_sixx:
Just noticed this come through in the past 48 hours.

I was getting about 40% drain after 13-14 hours of moderate-heavy usage (Spotify in the gym in the morning, multiple Instagram sessions, Tapatalk, words with friends, Facebook, Feedly, etc) since owning the phone, but now I am getting 5-6% battery drain per hour just from having the phone sitting on my desk at work.

Tried wiping cache and undoing the only changes I made (setting a 3rd-party alarm app to "disabled" in the app power saving mode list).

Has anyone discovered a cause yet?
[Samsung Galaxy S7 Edge Questions and Answers] quarintus:
So I have found something different with the firmware that HAS drain and firmware that hasn't. When I install the older firmware without drain and do a factory reset, the phone optimizes the phone. There is a separate system that runs a while and takes a lot of battery. The process is called optimising???? Not sure anymore. I didn't recall seeing that on newer updates. And checked. Yup it isn't there. So now I am thinking about the possibility that the absence of this process is:

1: really not there. And therefore missing optimization and more system drain?

Or.

2: the process is within android system but gets into a loop. Thereby causing the drain for people.

Of course. There is a bigger chance I am wrong about this than right. But it is at least something different between firmwares.
[Samsung Galaxy S7 Edge Questions and Answers] quarintus:
I just had contact with Samsung customer service and the battery drain problem is unknown to them! So I would like to invite everyone to contact them about this problem. Otherwise they probably won't fix it.
[Samsung Galaxy S7 Edge Questions and Answers] cavags5:
They know about all the problems the phone have.

Just don't care