How to set up Apple mobile phone and turn off cellular network system service?

Unlock your Apple phone and enter the settings application.

In the Settings application, locate and click the Cellular Mobile Network (or Cellular Data) option.

3. On the setting page of "Cellular Mobile Network", slide down, find and click the "System Service" option.

4. On the "System Services" page, you can see various system service settings, and each system service corresponds to a switch. Find the service you want to shut down, and then click the corresponding switch to shut it down. When the switch turns gray, the service is turned off.

Please note that turning off some system services may affect the normal function of the mobile phone, but it will not affect the call and SMS functions. In practice, please operate carefully according to your personal needs.