Bluetooth Isn't turning on at all. When I trying to turn on bluetooth, Phone getting hot. Also I'm facing same problem when I trying to turn on wifi & hotspot.

Whenever I turn on wifi, my phone startrestarts.I've tried a factory reset but my device is still restarting upon turning on wifi. Any advice on how I can resolve this issue?Model: SM-N770F/DSRegion: BANGLADESHThanks, Reza