Does anyone know how to turn on Bluetooth on the stereo?

There is a mode button on the stereo, or English mode, and then press the button to switch. Some stereos have voice prompt modes, such as playback mode, recording mode, Bluetooth mode and so on. But some stereos don't, only the place where the digital display is displayed. When you see blue on the screen, it means that Bluetooth has been turned on, and then the phone turns on Bluetooth to search for pairing. After the pairing is successful, there will be a ding-dong sound in the stereo, indicating that the Bluetooth connection is successful.