I have a relatively new phone. Ive had it 2 months. All was fine until the latest update a few days ago. Sometimes my screen goes black when someone is calling so I am unable to answer the call. Then it freezes. Also, my battery is running down by itself pretty quickly and overheating at times. Anybody else had this problem since updating?
Usually if a phone is glitching after a firmware update it's suggested to create a back up of your info and then Factory Reset. This gets rid of redundant files etc that maybe affecting the phone.
If that does not help then a Samsung Experience Store or Samsung Service can run a diagnostic on it for you.
Current Phone ~ S8 Model: SM-G950F. CsC:BTU.