This situation is mainly caused by poor hardware compatibility. Just set it up once from the car and the mobile phone.

Car hardware compatibility enhancement processing

1. Open the car Bluetooth settings and select "Other device detectability".

That is, other settings can be automatically detected. In this way, after Bluetooth is turned on, the mobile phone will automatically detect it.

2. Turn on Bluetooth on your phone and search for a connection from the car settings.

Mobile phone compatibility enhancement processing

1. Turn on Bluetooth on your phone and set the "Allow other devices to search for connections" option.

2. Search and connect the car Bluetooth.

Generally, the default connection password for car Bluetooth is: 0000.

3. After the connection is complete, first disconnect the Bluetooth connection in the car, and then turn off the Bluetooth function.

In this way, the car Bluetooth will automatically remember the connected device. The next time you turn on Bluetooth, it will automatically search and connect.

Mobile phone system troubleshooting

If the above method cannot solve the problem, clear the data of the Bluetooth program and reset it once.

1. Open the phone settings.

2. Select the program and select Bluetooth.

3. Select Clear Data.

4. Open the Bluetooth selection and select the "Detectable device timeout" option. There are several options such as 2 minutes, 10 minutes, 1 hour, never, etc. I don't quite understand it. I chose "never"

〖Experience Sharing〗

1. The main purpose of connecting a mobile phone to Bluetooth is to answer calls, and other functions are not perfect.

2. If you want to use navigation, it is recommended to install the map directly on your mobile phone.

For example, Baidu Map has complete navigation functions. The data update speed is fast, especially for road conditions such as whether the road is smooth, repairs, etc., there are timely reminders.

There are also reminders on speeding and speed measuring sections marked by netizens.