Battery life on my Galaxy A52s has drastically improved, but one lesson I learnt from all this is ,don't rush to update the software always wait for feedback from other users with same device as yours, I rushed the Android 12 One UI 4 and it did more...
It seems like the battery issues are caused by the lack of software support if can remember your phone was released in 2017 running Android 7 and it only got software support for 2 years that's back in 2019, its still a good phone but the battery it'...
