You cannot pair the Universal Bluetooth Audio Transmitter (ABT01F) to a smartphone because your phone is also a transmitter. You cannot pair two transmitters together, one of the devices must be a receiver. The purpose of the ABT01F is to transmit/stream audio from a non-Bluetooth audio source to a Bluetooth enabled device such as a headset, speaker etc.
If you are looking for a solution to stream audio from a Bluetooth audio source such as a smartphone to a non-Bluetooth enabled headset or speakers, please see our line of Bluetooth Receivers.
