Last week i updated my A10s to ONE UI 2.1 its so nice and Classic but encouter these 2 challenges.
1- I can't charge my phone if my phone is on.. i have to power it off then will accept charge. When i connect charge while its on its drains battery faster. (Its so bad, they should fix it)
2- Phone became slowly when opening some apps. I think they should fix it to become more faster.
I don't know about other users, i will continue to look on other errors and 'll present here.
Thank u.