1. Preliminary judgment may be that the software is hidden. It is recommended to open the application-menu-show hidden applications-check whether the software that is not displayed is checked (if it is checked, uncheck it) Yes)
2. Check whether the icon has been sorted into other folders.
If none of the above operations work, it is recommended that you back up your phone data (phone book, text messages, multimedia files, etc.) and restore factory settings (enter phone settings--reset-restore factory settings)
3. If the problem of restoring factory settings persists, it is recommended to send the phone to the nearest Samsung service center for testing and further processing.