Hi , I've recently replaced the screen in my Samsung galaxy ao2s, at first it wouldn't even turn on, it had the charging symbol on the screen when plugged in but the green circle wasn't going around to show it charging....
Ive eventually managed to get it on and working but it's very temperamental...

The battery icon always reads as 50% , when the phone goes into lock screen mode i sometimes can't get the screen back on unless I plug the charger in to get it to light up, also it keeps putting the camera app on.. u think it could be something to do with the side buttons.

When trying to get the screen to come back on I usually have to rub something across the bottom of the screen, if that fails to work then I have to plug the charger in .. The phone was working perfectly before I cracked the screen so I can't understand why this is happening.. if anyone has any advice I would be really grateful.

I originally got the phone to come on by using the side buttons after watching a video on YouTube..