Mine just stopped Saturday night, working with Samsung now. Have to take it to a store to flash the software. Alread uninstalled apps including Bixby voice beta, and sega games, also tried a factory reset. So, store then possibly warranty.
so I tried using the wireless in Safe-Mode and after a factory reset with no change. if you flashed the software you've done the 3rd thing suggested to me (which also didn't work). time to exercise the warranty, sadly.