Follow the pairing procedure as instructed in the 'Bluetooth Headset Connection' section to pair the headset with the first mobile phone. Step3: Turn on the Bluetooth on your first device, it will connect automatically. Step4: After connected with the second device successfully. Turn off the Bluetooth on your first phone, the connection will be automatically completed - and you can operate the two devices through one headset if you want to use it a lot more than one device at the same time. Click the mute switch to wake up Siri. Clear all connections on the phone and then repeat the pairing steps. Or press the MFB for 5-6 seconds, and the blue light flashes once, then the headset restores to factory setting.