S21 Overnight Battery Drain

[mmtech]

I have seen battery drain overnight in S21 even if you have restricted everything still 10-15% battery drains in 8 hours. When checked in Battery & Device care it shows

Google Play Store : 0.7%

Gmail: 0.2%

one UI: 0.2%

This total is around 1% then where remaining battery goes ?

This is really weird, is there a way to find out what else is draining battery taking 14% battery overnight?

Also i kept phone in Safe Mode overnight just to be sure no hidden third party app drains battery but result is still the same 12% battery drain.

I have been pixel and iphone user in past but never seen more than 5% battery drain overnight. Is battery used is cheap quality or poor wiring.

Any one else facing it ?

[Nat2202]

I had the Huawei P30 and the battery lasted two days before needing charging.  I am a heavy user on the phone.  

I got the Samsung S21 and it needs charged 2-3 times a day.

I woke up with it being at 100%. I got to work having only looked at Facebook and emails briefly and the phone after 1 hour was at 69%. 

I was under the impression this was a faulty phone, but it seems everyone on S21 is experiencing the same issue.  Would avoid. Once thie contract is up, will be avoiding Samsung phones.  This one does not do it justice.

For writing this comment alone had taken 4% off it.

[valenp]

I solved it by turning off "Nearby device scanning"

[mmtech]

This issue has become even worse now. Battery draining 25% overnight even after applying all options mentioned in this thread.

[kasam1640]

Mine has increased to about 10-15% i suspect the updates play a role in it aswell

[Samarth Suthar]

I had same problem, battery used to drain 10 to 15 % at night.

I tried airplane mode at night.

Got only 2 % drop at first day and on second day , battery didn't drain a single percentage