Step\/Method 1
Maybe the pairing function is not enabled on the Bluetooth headset. Let's press the button on the Bluetooth headset twice to open the pairing function.
Step\/Method 2
The open test may not be enabled on the phone. Click Open test.
Step\/Method 3
Restart the phone, it may be that the CPU usage of the phone is too high to connect.
Step\/Method 4
If the above steps do not solve the problem, it may be that the Bluetooth headset and the mobile phone are not compatible, in this case, you can only go to the business exchange.