Galaxy S7 battery drain over night

[Vinny]

Over the past few days my phones been drastically losing battery over night, going from around 95 to 70% in around 6 hours, by simply being idle with deactivated mobile data and with power saving mode activated. The screenshot above shows that Android system and Android os are responsible for over 30% of the battery loss each. Has anyone had the same problem and found a potential fix for it ?

[CarlJohnson]

How old is your battery? I remember facing the same problem with my Xperia Z2, the battery drained very quickly even when the phone wasn't in use.
Here are few things I tried to fix it and which helped me.
1. Make sure wifi/bluetooth/data/etc are off, set the brightness to minimum when not in use instead of auto, shorten your screen timeout time

2. Close apps running in background, if you use whatsapp, facebook, etc they keep running in background. You can either manually kill their processes and widget by going into Setting > Apps > Running or by downloading some app (I personally recommend ES Task Manager) which will do it for you. If you can you should consider wiping up your cache partition if nothing helps. (Rebooting helps too sometimes)

3. Check if your charger is working properly or not, you can download some app from playstore which will help you determine if your phone is getting sufficient amount of power/current or not. You can find out how much power your phone battery requires on net or on battery. 

4. Try using this app (https://play.google.com/store/apps/details?id=com.bat.lifebattery&hl=en), it helped me a bit, so why don't you give it a try aswell?

5. Switch of useless stuff like Briefing, Smart Stay, etc.

6. Play around with the Power saving mode and see which one fits you best

Lastly if your battery is too old, consider getting it replaced.

[StarFish]

Yeah, buying a new battery should help. Or simply turn off your phone for night as I do. You won't wait for any call when you sleep.

[Eurobeat]

A new battery should fix it. My sister's phone had the same problem until the battery was replaced.

[hide=upset]inb4 explodes[/hide]

[Vinny]

The phone is 2 months old and you can't remove the battery because the phone is waterproof from the inside out


I guess that doesn't look to bad ? But how reliable is this app ?

[CarlJohnson]

The phone is 2 months old and you can't remove the battery because the phone is waterproof from the inside out


I guess that doesn't look to bad ? But how reliable is this app ?

No, it doesn't. Fix problems will re align the ions (as the app promises) but it won't have much effect as the battery seems to be healthy.

Check the other options, such as background processes, etc I stated above.

[Vinny]

The problem with that task managing app is it doesn't display anything, or does the phone have to be rooted ?

[CarlJohnson]

The problem with that task managing app is it doesn't display anything, or does the phone have to be rooted ?

Yes it seems like that. Can you post a screenshot of your running apps before I suggest something else?

[Vinny]

Where do I find that ?

[Eurobeat]

You have to send it into some shop so they can replace the battery if that's what you're gonna do.

[CarlJohnson]

Settings > Apps > Swipe from right to left or tap on Running tab there.

You have to send it into some shop so they can replace the battery if that's what you're gonna do.

Send it to a Samsung Authorized Service Center not to any shop because if they open your phone and seal gets broken, the warranty is void which will cost you money for any repair later at some point. Although this is for when nothing helps you

[Vinny]

Well there are so much in that list and I can't get them to be sorted by the ressources they use

[CarlJohnson]

If the list is long it seems like a lot of apps are running in the background that's why 33% of battery drain is due to Android system.
You can either manual stop the apps by taping on the apps and force stopping them or reboot the phone (although make sure they're not in autostart otherwise it will have no effect - you should be able to see autostart apps in settings), Facebook and all have tendency to start on boot which also reduces boot speed.

The best possible option is to download a ram booster which will do this for you. Just make sure they're not whitelisted in booster app

[Hobo]

Jesus Christ.

Delete the bullshit battery and ram apps. Nothing like that will do anything except fuck up what Android already optimizes. Uninstall all the bullshit bloatware from samshill too.
Delete the facebook app because it's a piece of shit. Get some lite version instead.

Realistically you have a wakelock from something, probably Google play services. What Android version are you running? Have you rebooted the phone?

[CarlJohnson]

Jesus Christ.

Delete the bullshit battery and ram apps. Nothing like that will do anything except fuck up what Android already optimizes. Uninstall all the bullshit bloatware from samshill too.
Delete the facebook app because it's a piece of shit. Get some lite version instead.

Realistically you have a wakelock from something, probably Google play services. What Android version are you running? Have you rebooted the phone?

Ram booster helps in killing up processes, better than doing them manually. (Not clean master and shits)

Samsung also have Smart stay and some shit called briefing which drains a lot of battery.