A:AnswerTry this:
1) If the NS-BBBT20 is not seen by the smartphone, cycle through the inputs until back at the Bluetooth input.
2) If the device is seen and it fails to pair/connect:
a. Try pairing/connecting again.
b. Try cycling through the inputs until back to the Bluetooth input.
c. Try power cycling the NS-BBBT20 and attempting pairing/connecting again.
3) If there is no audio after pair/connect, try power off/on the NS-BBBT20 as well as turning off and on the smartphones Bluetooth radio.