You need to pair devices when powering up CK3x00 for the first time.
Subsequently, all connections between your phone and CK3x00 are
automatically established when both devices are within a few meters
range of each other.
Procedure:
From your phone, select MENU, SETTINGS then CONNECTIVITY.
Select BLUETOOTH and turn it ON.
Select SEARCH FOR AUDIO ENHANCEMENTS (waiting...).
Select 'Parrot CK3100' and enter 1234 as Bluetooth PIN code.
Your phone is now paired with the CK3100.
Automatic connection after pairing:
You can allow the CK3x00 to esthablish the connection
automatically (recommended).
From your phone, select MENU, SETTINGS then CONNECTIVITY.
Select PAIRED DEVICES, select 'CK3x00' and OPTIONS.
Select AUTO-CONN WITHOUT CONF, select YES.
Known issues with this phone: No particular problem noted to this date.