Thought one UI 7 was bad

[Evgeni]

How is possible UI 7 update to destroy my battery life completely and now One UI 8 to be even worse cmon samsung 2 hours screen on time 50% gone srlyyyyy 

[imyj]

Check your screen brightness. It makes a huge difference.

[Evgeni]

Most of the time is below 50%

[Evgeni]

Even im on the low resolution but still barely last 3 hours screen on time

[imyj]

I keep location, bluetooth, WiFi off by habit. Only on when I need them. That makes a difference too.

[Evgeni]

Are they shouldn't make every next update better than the previous one better optimization etc.
Feels like i have 3000mAh battery not 5000

[Piper123]

Lots of threads about this had you searched before posting again

[Piper123]

First, turn off Auto Blocker then follow these instructions EXACTLY as written

Using the Samsung Phone App (not the Google one)

Dial *#9900# then scroll down to battery stats reset. Click then restart your phone.

Turn Auto Blocker back on

Restart device

Wait 14 days for battery optimisation to complete.

Credits to @Moiramon and @lminvti for this information from previous threads

[Evgeni]

Will give it a try

[Joeeye]

Found mine returning to normal power drain levels now since updating about 3 weeks ago. 13h SoT is pretty common for my S25 Ultra even using YouTube.