What is the reason why the SMS on Samsung 7 109 mobile phone automatically disappears and cannot be stored?

If the messages in your mobile phone are always lost automatically, I suggest you:

1. Info-Menu key-Settings-Basic Settings-Delete old information-Uncheck.

2. Clear SMS data: Settings-Application Manager-All Information-Clear Data.

3. Uninstall and delete the recently installed software (excluding whether it is related to the downloaded software).

4. If it is invalid, please back up the information (contacts, text messages, pictures, etc.). ) in the phone, and then restore the factory settings (Settings-Reset/Privacy/Personal-Restore the factory settings).

If the problem still exists, please take the purchase invoice, maintenance card and machine to the Samsung service center, and the professional after-sales engineer will help you test it.

. Please click the following link to find out the specific location of Samsung Service Center:.

Welcome to Samsung service to make an appointment:

. Samsung . com/support