Battery drain on android 12

[Salla07]

Hi,I've got my Brend new samsung s20 a few days ago.It was on android 10 out of the box and I got just over 5 hours screen on time.Yesterday I updated it about 5 or 6 updates to android 12 and the latest security update now its absolutely draining battery.Anyone had this problem and know the problem and how to fix? Thanks

[Dfich]

I'm getting insane battery drain since the latest update. Sick of it tbh. It happens everytime I update and everytime I have to factory reset to fix a wiping cache partition doesn't work. Last time I buy a Samsung phone. 

[Salla07]

Does factory resetting it fix it?

[Members_uIKtc6S]

I have the same problem since I updated. My battery lasts barely a day now. The culprit according to my screenshot is the One UI launcher app. I have booted in safe mode for a day because support told me to. Battery worked well but all I can do then is call people. Hardly a smartphone then...

So I then started normally again and it worked well for half a day. Now the launcher is sucking out the power again.

They also told me factory reset but that's definitely the last thing I'll try because I don't have the effing time to spend half a day trying to fix a phone which was working perfectly fine before.

I have to say: I hate, hate, hate the way companies like Samsung do support. They let a only half-informed community do the job. You get random people who don't really help you. And then basically nothing happens.

So, no, I don't know how to fix it. The support told me that standard ***** about malware or "software conflict" which frankly means, that they have no clue either.

[Salla07]

Might try do a factory reset as it's just new and havnt transferred anything

[Richmar83]

If the handset is new, irrespective of the OS version, then the battery will be in learning mode whilst it adjusts to usage and charging/ discharge cycles.
I've had a S20 for 18 month and was part of the Beta testing for A12 & OneUi 4. Not had any real battery issues & I'm quite an heavy user.
All I can recommend is clearing the system cache after any OS updates, let the battery bed in (and you should see increases in battery life), and I clear all the app Cache's every couple of days with 1TapCleaner to clear crud out.

[Salla07]

Thanks,I don't know how to clear caches but should be ok it's finished learning usage.i got 3hrs 42 mins of screen on time at under half brightness Bluetooth off etc from 85% to 25%.But for some reason essentially when I power it off as soon as it turns on its lost 1% then loses 4% within a minute and standby does it a bit

[Richmar83]

There's guides to clearing system cache on YouTube. 1TapCleaner is a free app.

[tinglish]

Partition cache wipe after every software update and galaxy apps booster is a must for me,always have great battery and performance on my s21 ultra, flip3, s22

[Salla07]

I got its asking to get access to "restore" stuff should I just allow it and run it?