The general connection methods of Bluetooth audio are as follows: 1. First, read the instruction manual of Bluetooth audio in detail, how to turn on the audio and then turn on the Bluetooth function. 2. Turn on the mobile phone. In the mobile phone, enter the settings in the mobile phone:

3. Click on the Bluetooth function in the settings:

4. At this time, the mobile phone will automatically search for the surrounding Bluetooth devices. Remember in the manual that if you have found your Bluetooth stereo, it will automatically pair up and connect, and the stereo will sound "thump" (or the voice connection is successful), indicating that the connection is successful.