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