① System network settings are wrong.
② BUG problem of system version.
③ There is something wrong with the baseband of Apple's mobile phone.
Solution.
① The system network settings are wrong, which can be solved by restoring the network settings.
The operation is:
1. Click "Settings" on the main interface of the machine.
2. Open "General" in the "Settings" interface and select "Restore"
3. Select "Restore Network Settings".
The answer is not easy, I hope I can help you, please help me adopt it if you are satisfied, thank you!
Apple's cellular mobile network can't be opened for several reasons.
① System network settings are wrong.
② BUG problem of system version.
③ There is something wrong with the baseband of Apple's mobile phone.
Solution.
① The system network settings are wrong, which can be solved by restoring the network settings.
The operation is:
1. Click "Settings" on the main interface of the machine.
2. Open "General" in the "Settings" interface and select "Restore"
3. Select "Restore Network Settings".
② BUG problem of system version.
Generally, after upgrading the system version through OTA, various BUG problems will be left behind. At this time, the problem can be solved by restoring the system version.
The operation is:
Step 1: Log in to Apple official website, download itunes software, install it and open it.
Step 2: Connect the Apple phone to the computer with a data cable.
Step 3: In the summary interface, click "Restore iphone" and follow the instructions of itunes to restore the system version.
(Note: Please do not disconnect, cut off the power supply or use the equipment during the recovery process)
③ If there is a problem or failure in the baseband of Apple's mobile phone, you can contact Apple's after-sales service provider for maintenance.
Contact to arrange maintenance operation is as follows:
Step 1: Open a browser and log in to China Apple official website.
Step 2: Click "Technical Support" at the top of the page.
Step 3: Click "View Warranty Status".
Step 4: Enter the serial number of the machine and select an after-sales service provider to make an appointment.
Step 5: After the appointment is successful, bring the machine and ID card to the after-sales service point for maintenance within the specified date.