Unlock your device and turn on the Bluetooth and NFC features
Tap the NFC touchpoint on the back of your device to the back of the inline remote. NFC is a short-range communication that requires devices be within a couple inches of one another to communicate
Reboot the device being used to connect to the headphones
Be sure the device's a2DP Bluetooth protocol is enabled. For information on what profile the phone supports, refer to the manufacturer of the device