The status bar of vivo X9 mobile phone screen displays the G icon, indicating that the mobile phone is accessing the Internet through GPRS(2G) data connection.

If you need your mobile phone to use the 4G network, you can operate as follows:

First, use the 4G card of the communication operator corresponding to the mobile phone version to open the 4G traffic package.

Second, enter the phone settings-mobile network-network mode, and select 4G (priority) 3G/2G.

Specific operation steps:

1, standby desktop click setting

2. Mobile network

3. Network mode

4. Select 4G (priority) 3G/2G.

Third, replace the mobile phone used in the 4G network environment.