my bluetooth is constantly shutting off even when not in use!

[AC Question]

I have the LG g3 vigor (hope to replace with either the Google pixel? or something comparable?(open to suggestions) It seems that the last 3 Bluetooth devices have all done the same thing: I get a message saying it has stopped working. I've had that happen even after I turn it off! I made sure battery saver mode was off but still getting this!

Seriously frustrated!!