Chosen Solution
Phone would display pink horizontal bars in a checker pattern then it restarts. and will be fine for a wile. It has never been opened so it does not have a 5s screen. The water sticker in the SIM port is clean and has not gotten wet. Any ideas?
It’s probably a screen issue so at some point, you will have to try a replacement screen to eliminate (or not) that possibility. If a known-good screen doesn’t solve the problem, then the issue will likely be on the logic board.
