Are you positive you have an issue with your touch ic chip? Because it says your have a 6s+. And touch disease is extremely rare on the 6s series. In terms of accessing data the only way of doing it would require hooking it up a computer you have already trusted or authorized on both phone and computer in iTunes.
Hi first thing I would do is test the battery if you can. Sometimes certain failing batteries will result in a process call bootlooping which is what your experiencing. other possible cause could be a corrupted software of some sort.