How to use the earphones with both phone & transmitter of Medley Pebble?

1.1 Connect the earphones to your phone. How to use my Medley Pebble earphones with my phone or other device?.

1.2Turn on the transmitter dock and wait for about 2 seconds, it will connect to
the earphones automatically. The earphones will now be connected to your
phone and transmitter simultaneously. You can:

1.21 Switch audio between phone (Classic Bluetooth audio) and TV /
transmitter (LE audio) – Press and hold the MFB button for 2 seconds, you
will hear a short beep.
1.22 Respond to incoming calls on your phone – Press the earphones’ MFB
once to accept an incoming call, or press & hold for 2 seconds to reject.