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%
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 ?
Solved! Go to Solution.
To cut a MULTI YEAR LONG story short, I could/can never get ANY of my (expensive!!) Samsung Galaxy flagship devices (S8, S9, S10+, S20U, S21U, Note 8/9/10+, Note 20U, etc) to drain less than 3-4% per hour, and overnight, I lose 14-18% in 7 hours despite ALL the tricks in the book. And yes, I HAVE seen all the videos over the years, all the Reddit post, blogs, etc, nothing works. In terms of SOT, I average just about 3h SOT in a 13-15 hr day with my S21U, and about 2.5-3 in my previous N20U.
May be I'm just incredibly stupid for coming back to Samsung flagships year after year band expecting better results in this department each time. I've all but given up, the stress is just too much; may be it's just my bad karma ! If the battery was 6000mah (like in the F62), may be that'd work. If not, I really really doubt I'd be going again for their next flagship.
My other phones like the Asus Zenfone 8, Pixel 4XL and iPhone 11 don't drain more than 1% an hour and I'm completely ok with that. 3-4% is just too much. Yes, I have 500 or so apps, but they are the same apps in the other phones as well and I use all of them the same way, and they all deal with it just fine. Also, and very importantly, I do NOT need to waste my precious spare time doing a million tweaks each time I get a Samsung phone to get, in the end, a below average battery life !
Read the whole thread. So did you find a fix for that battery drain issue. I have the same problem.
I have also watched multiple battery saving tip videos but I am seeing 10-15% drop every night. Made bixby turn off mobile data, wifi, Bluetooth and location, and turn on power saving mode and close all apps at 00:10 to 06:50. Same result.
I am thinking of resetting all settings to factory setting.
I have a widget that shows instantaneous battery drain. On my LG phone I used to get around 120mA during normal usage in battery saving mode. The s21 drains over 200mA normally.
How is your phone now. Did u fix the issue?
Ah I didn't see the discussion on airplane mode so weak signal is the issue. Will try switching to 2G overnight with bixby routines. And I can also use another sim. Will post here my findings.
Hey I have been experimenting with this phone.
1) I tried going with Airplane mode ON for one night with all apps closed - Zero drop all night
2) Last night 1 hour after Bixby routine activation to turn on power saving mode, airplane mode and closing all apps. I found that the battery was still draining. I checked it was in power saving mode and in airplane mode. But all the apps I was using was not closed and they were using battery..Even in power saving mode and with sleeping apps turned on. I closed all apps and for the next 7 hours no drain whatsoever.