The GMC01 Micro System with USB can connect to your phone to the unit either via Bluetooth or by using the AUX port on the top of the unit.
For Bluetooth connection you will need to press the FUNC button until you reach BT mode. .On your phone, select GMC01 from the list of found devices, then select OK or YES to pair the unit with the device. (If asked the password is 0000)
To use the AUX connection you will need to connect your device to the unit using a 3.5mm stereo jack cable. You will then need to press the FUNC button until you reach AUX mode.