In case you have never paired your headset to another phone before, just by turning it on, it should enter the pairing mode, denoted by its indicator light flashing alternately in red and blue. Otherwise, i.e. if it was paired to another phone before, press and hold the call control button until its indicator light flashes alternately in red and blue. Then, on your phone, press the left softkey and go to 'Menu > Settings > Bluetooth > Add New Device'. After a little while, your headset should appear on-screen. Using the directional key, select your headset and press 'Pair'. If a pairing code (or PIN, or passkey) is requested, enter '0000' (four zeros, without the quotes). If the pairing process is successful, your headset should enter the standby mode (blue light flashing every few seconds). There might be an indication on your phone screen that a bluetooth device is connected as well.Hope it works for you.By the way, in case any (or both) your headset and/or phone user guides happen to be missing, feel free to download them from
here (headset) and/or
here (phone).Anyway, please, let me know if you need further informations.Best regards,Carlos