Reconnect the headset
To manually connect the headset to the last used device that supports
the A2DP Bluetooth profile, but not the HFP profile (for example, after
connection loss), deactivate and activate Bluetooth connectivity on the
headset, or press the play/pause key when Bluetooth connectivity is
activated.
To manually connect the headset to the last used device that supports
the HFP Bluetooth profile or the HFP and A2DP profiles, start the
connection in the Bluetooth menu of your device, or press and hold the
multifunction key for about 2 seconds.
You may be able to set your device so that the headset connects to it
automatically. To activate this feature in a Nokia device, change the
paired device settings in the Bluetooth menu.