Yoo what’s up,
I when true the same, trying to find a way to use the midi with android
So im using
•android galaxy s23 ultra
•Developers option enable
•koala sampler
•Akai MPD218
•USB B to USB C
•Xenyx302usb
And Bluetooth to my spkrs from my phone.
To enable “Developers option”
Koala Sampler App
Its a paid app
Open Settings, Open midi settings.
under settings double check to have the right settings on/off.
Keep, External midi control sink Off, in the Koala app.
Record something in the pads and play with it. It worked for me. Ill be uploading a video YouTube.