Samsung mobile phone short message sign is missing, so I can't send and receive short messages. What happened?

The software icon on the main screen of the mobile phone is missing. Samsung mobile phones usually recommend the following steps for troubleshooting and handling:

1. Check whether the hidden application is set (some mobile phones support the hidden application function);

2. Some of its own programs are in Samsung or Galaxy Plus folders;

3. Check whether there is a new version of the mobile phone system and try to upgrade the system (first back up the important data in the mobile phone);

4. If not, please back up the data (contacts, text messages, photos, etc.) in your mobile phone. ) and try to restore the phone to the factory settings.

If the problem still exists after the above operation, please take the purchase invoice, maintenance card and machine to Samsung service center for inspection.