After pairing your headset with your phone, you can pair it with up to 3 other phones. The headset can be connected to 2 phones at the same time, so you can make and receive calls on, for example, your personal and your work phone at the same time.
On the phone you want to pair with, switch Bluetooth on.
Switch the headset on, then put it to your ear.
Press and hold the menu key, then follow the voice prompts.
As well as pairing with a phone, you can also switch ear detection and voice guidance off, and restore factory settings.