What can be done if the M17 fails to connect to Bluetooth earphones?
If it fails to connect to Bluetooth earphones for the first time, please make sure the
earphones are in the pairing state (the connection will fail if the earphones are under
reconnecting state for the first-time connection). Go to the Bluetooth menu of the M17 to
start the connection.
What Bluetooth codecs does the M17 support? And how to switch the
Bluetooth codecs?
The M17 supports LDAC, aptX-HD, aptX, AAC and SBC which can be switched on
Settings->Audio->Wireless playback quality menu.
What can be done if the volume is too low when the M17 is connected to
AirPods?
Go to Settings->About phone, and continuously tap the "Build number" 7 times. Go back to
Settings->System->Developer options menu to turn off the"Disable absolute volume".
Disconnect and reconnect the two devices through Bluetooth.