1. Connect the first phone, then turn off its Bluetooth function.
2. Set the CK210 into pairing mode again - Press and hold the MFB for 3 seconds until LED flash BLUE and RED alternatively.
3. Turn on Bluetooth on the second phone and connect with the CK210.
4. Reboot the CK210 by turning it off then on again. Turn on the Bluetooth
on the first phone. Both phones will now be connected to the CK210.