S21 Ultra battery life

[Kenso62]

Is anyone else out there experiencing a rapid battery drain? 

After the last software upgrade, the battery life sucks. 

[Cassidy007]

Hi @Kenso62 

I saw many posts with the same problem, so can you try to make a wipe cache partition ? If it doesn't work, it could be a bug in the update...we'll see. Take a look here first :

https://eu.community.samsung.com/t5/galaxy-s21-series/s21-base-feb-update/td-p/2905860

Sometimes some files got corrupted so i recommand you to make a Wipe Cache Partition after each major update. This does’nt affect any of your files but can improve your device’s performance and resolve many problems that could happen after a update.

Galaxy S21

First, Turn off your phone.

• Then hold down Volume Up and Power button until you see SAMSUNG Galaxy logo on the screen.

• After that select Wipe cache partition. Use Volume buttons to scroll and confirm with the Power button.

• Now go to Yes option.

• At last, choose Reboot system now by using the Power key. Now your device should work better

Give me some news...Oups i forgot, does Adaptative Battery is enable ?

[Ajs3]

I have had such a horrible 2 weeks. Returned my first unit, 2nd phone is actually worse. Updated to AUB9 yesterday and lost 25% battery overnight. Barely getting 3hrs SOT. 

After 10yrs with Samsung I've had enough. You can't pay this much money for such poor quality. And the service is even worse.

Nice going Samsung - truly horrible.

[GoanGeek]

Are you doing A fresh start or switching through smarthings app?
Lot of people solved battery drain by starting from scratch when setting up phone.
Some apps like chrome fb messenger, WhatsApp weren't playing nice.
Also make sure after every update you manually update apps both from playstore and Samsung store.
Latest update now is AUB9 although most would be on AUB6

[Ajs3]

I did all of that. Fresh install of everything from scratch, wiped cache partition after update the works. Believe me, I have troubleshooted everything it feels like!

[Cassidy007]

So, it seems being a bug in the update

[Ajs3]

Perhaps it is yes. Perhaps I’m the unfortunate sod to have a faulty device. I dunno. All I know is that it’s currently a poor excuse of a “flagship” phone.  I am really disappointed and expected better.

[Hasvor]

 thats my SOT AFTER 2 WEEKS on s21 ultra 256gb SD 888 with 13% battery  left