Samsung Galaxy S7 Active Case, Zizo [Bolt Series] w/ [Galaxy S7 Active Screen Protector] Kickstand [12 ft. Military Grade Drop Tested] Holster - G891 BLUETOOTH FUNCTION : It is a Bluetooth headphone for iPhone, please open the Bluetooth to connect when using. And it will connect automatically when you plug in the cable in 2-8 seconds if your Bluetooth is open.