Same here with a plantronics headset explorer 55!
Worked great on iPhone X w/ 13.3.1 and keeps disconnecting on iPhone 11
what‘s weird is this:
the headset tells you initially after turning it on: „Power On, Talk Time xxx hours, phone 1 is connected“ - then, out of the blue, it says the same thing after sometimes 1 minute, sometimes 4 minutes, except it then says: „..... no phone is connected“ since the iPhone dropped the bt-Connection.
But here‘s the fix that works for me ;-) :
if you now go into the bt-settings on your iPhone and actively click on this bt-device, it again says: „... phone 1 connected“ and then keeps the br-connection like it is supposed to😜
so for me it seems like there is an issue w/ the automatic re-syncing of an already paired device...
it’s really messed up though - and trust me on this: Steve Jobs is turning like a maniac in his grave since something like this would have never happened under his reign...
they should put some magnets on the dude and install some coils around his coffin!! This would be the cleanest generator on the planet 😎
please share if the manual activation fixes the issue for you - so this might point the developers in the right direction