The cell phone signal is not good

Maybe the cell phone signal is not good enough now. If the cell phone signal is not good, it will show no service.

Mobile phone system problems

There may be something wrong with the mobile phone system. It is recommended to restart the mobile phone or restore the network settings.

The mobile phone card is not installed

Check whether the mobile phone card is installed. If you don't have a mobile phone card installed, you can't display the operator.

Insufficient balance of mobile phone

Check whether the current mobile phone bill balance is sufficient. This will also happen if the balance of the mobile phone is insufficient.

Mobile phone card slot failure

Mobile phone SIM card slot failure or poor contact with mobile phone card, resulting in the inability to identify mobile phone card. Pull out the card and plug it back in. It is recommended to back up personal data and restore factory settings.

Mobile phone system problems

Software or system reasons. Brush machine, it is best to use official ROM. Apple's mobile phone system is wrong, which means that the baseband in the system is wrong, which makes it impossible to use wireless functions and search signals. If you brush the machine, it is recommended to brush the corresponding, latest version of the system.