Samsung tab 3 can't send short messages, but it can receive short messages.

According to your description, I suggest you:

1, shut down and restart. Send the text message again.

2. Open the message, touch the function key on the left side of the mobile phone, select Set Information Center in the pop-up menu, reset the information center of the sim card, and then restart the mobile phone.

3. Wipe the metal surface of the sim card (if possible, replace it with a good sim card).

4. Delete the recently installed applications of the mobile phone.

5. After backing up the mobile phone data, restore the mobile phone to the factory settings.

6. You still can't send messages. You can take the warranty card, purchase invoice and mobile phone to the nearest Samsung mobile phone customer service to test the mobile phone.

Please click the following link to view the specific local service center:/support/location/supportservice.do? Page = service. Location and place. cid = cn _ PPC _ support _ service _ repair net _ 120522

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