I have upgraded my two phones from S4 to the S7 Edge. Normally, the phones would light up after being charged, then dim and go to Always On Mode. Last week one of them is now staying on after being charged. It does not dim and it does not go to Always On Mode or go to the Lock Screen. I checked the settings on both phones and they are exactly the same.
Is there somewhere else on the phone I can check so it can go back as before?. Thanks.