Can I find out the exact reason why the connect to the bluetooth device did not work?

Question

Android

The method itself is void.
IOException is thrown on the android class line.
https://android.googlesource.com/platform/framewor...
I can’t dig deeper into the kernel sources without a hint.
On this bummer?
We either connect or after 12 seconds we get an exception without details?
I would like to distinguish between cases:
- the device is used by another phone.
- captured by a competitor program (ideally the package name)
- disabled or out of view without launching the disk drive after the exception.
Or is it all fantasy.
ps do not offer to rebuild your kernel.