Sorry to hear about your issue. I am also struggling with an issue that I have on my S7+. I randomly get multicolored vertical lines flashing on the left hand side of my screen. I read online that it is a bug that can be resolved by switching off the hardware overlays option. However, this seems unacceptable to me when one spends such a large amount of money on a flagship tablet. talk about quality control. Ridiculous.
I bought the Tab 3 months ago! The other day, it exploded. And Samsung is not taking any responsibility towards the incident. My kid use it all the time, I don’t want to imagine what would happen to him if that thing exploded in his hands. Safety of this machine is totally ZERO. I’m writing this to all of you who use one. Be careful because it can happen to you too. And no one will care. I’m dealing with them now, and they really make you feel worse for buying or even dealing with Samsung. Be careful the tablet is dangerous for you and your families. #samsung*****