The SMS label on the desktop is missing. I can't find it anywhere.

SMS is an automatic application of this system. If you can't find the icon, you can only restore the phone to the factory settings.

Take the iPhone 7 mobile phone as an example, the method of restoring factory settings is as follows:

First, click "Settings" on the desktop of iPhone 7.

Second, select the "General" option after entering.

3. Then click "Restore" to enter.

4. After entering recovery, find the item "Restore all settings" and click Enter.

5. Then enter the password. After verification, the phone can be restored to factory settings.