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Why does Samsung mobile phone have to use traffic switch to send text messages?

Dear Samsung users, hello:

According to the situation you described, is the content you sent within the scope of MMS, such as adding contact cards/pictures, etc. If not, I suggest you try. "

1. I suggest you go to Settings-Applications-All-SMS-Clear Data.

2. Try to replace another sim card, or wipe the contact point between the mobile phone card and the mobile phone (whether the SIM card is in poor contact).

3. It is recommended that you try to upgrade the firmware. (Settings-About Equipment-System Update)

4. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore the factory settings.

If the problem still exists, I suggest you take the three-guarantee certificate and send your mobile phone to the nearest Samsung service center for inspection and maintenance. Please visit:

Samsung knows to provide you with high-quality solutions and answer your questions attentively, hoping to get your satisfactory evaluation.