Any guides to debug Bluetooth issue?

Hi,

My Bluetooth module has been acting weird lately. I've tried all things except a factory reset. It seems that if I bump my phone a bit, the Bluetooth setting turns off, and when I try to turn it back on, it freezes the toggle. If I bump it enough times, it works again.

Is there any guides on where the Bluetooth piece is located, so that I can check to see if the port is loosely connected or something?

Thanks!!