Close

What are you looking for?

cancel
Showing results for 
Search instead for 
Did you mean: 

Original topic:

S21 cell standby draining battery

(Topic created on: 13-07-2021 08:18 AM)
mmtech
Pioneer
Options
Galaxy S21 Series

I have been observing battery drain for some time and narrowed down to cell standby battery drain as Airplane mode doesn't drain battery. My phone is connected to cell tower that's it. No Internet, no background services, no wifi, stand by mode but still overnight battery drain is 10% in 8 hours. I just have dual physical sim and that was the reason buying Samsung instead of Apple. It looks like Samsung hardware is still not capable to handle cell reception which apple and old basic phones handled very well. Samsung still not improved after so many years and its a battery sucking machine.

Anyone else observed this issue and how to fix it ?

0 Likes
12 REPLIES 12
strawberry cake
Hotshot
Options
Galaxy S21 Series

@mmtech 

 

hello

you may swipe down the screen to open shortcut tray

then tap power saving mode 😉

 

 

 


 (\_/)
(='.'=)
(")_(") strawberry cake so delicious

0 Likes
BandOfBrothers
Samsung Maker ★★
Options
Galaxy S21 Series

Using two sims in the phone is a known battery resource usage drain @mmtech 

If one or both of your signals are poor then the phone can drain battery trying to remain connected.


Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.

The advice I offer is my own and does not represent Samsung’s position.
I have no affiliation with Samsung.

0 Likes
mmtech
Pioneer
Options
Galaxy S21 Series
As I said earlier, I already tried all these options but no luck.
0 Likes
mmtech
Pioneer
Options
Galaxy S21 Series
Why this issue is only in Samsung phones.Apple phones works with 2 sims without battery drain?
0 Likes
GoanGeek
Big Cheese
Options
Galaxy S21 Series
Totally agree. I Believe OP answered his own question by stating Apple and old phones don't have the issue as they don't support dual sims 😉
0 Likes
GoanGeek
Big Cheese
Options
Galaxy S21 Series
Apple is generally more aggressive with background stuff compared to Android in general.
Also it makes it easier for them as they control both software and hardware unlike Android manufacturers.
0 Likes
mmtech
Pioneer
Options
Galaxy S21 Series
Apple supports dual sim with one esim. And there are old feature phones which had dual sims and none of them had such fast battery drain.
0 Likes
mmtech
Pioneer
Options
Galaxy S21 Series
I am just taking here about connecting to network. I know background services drain more battery in Android than ios but this is about basic cell standby feature which should work in all phone properly.
0 Likes
GoanGeek
Big Cheese
Options
Galaxy S21 Series
In all fairness . My single sim is around 4 - 5 % battery drain overnight on WiFi and with bedtime mode On.
So with your dual sim seems pretty OK to me.

Then again I mostly charge overnight as I love 100% battery in morning.

Why not try One sim and bedtime mode with each sim separately and maybe you will find which sim is the culprit.