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The SMS icon in the mobile phone desktop and application is missing. How to save it?

The software icon on the main screen of the mobile phone is always lost automatically. Please:

1. Please try adding icons to the home screen with your own software.

Please uninstall the recently installed third-party software and try it.

3. Back up data (contacts, text messages, photos, etc. ) and try to restore the factory settings.

If it still doesn't work, please bring the purchase invoice, maintenance card and machine to Samsung service center for inspection.