1. How to pair the smart phone with BTR3？
A: 1. Unlock your cellphone and turn on bluetooth;
2. BTR3 is in pairing mode which means the blue and red lights flashing alternately.
To enter pairing mode:
a. After powered on for the first time: the BTR3 would automatically enter the pairing mode, and the red and blue lights will flash alternately.
b. Force the BTR3 to enter Pairing mode: Hold the button A for about 5 seconds when the device is on, and the red and blue lights will flash alternately.