Why did Samsung w20 13 reply to SMS three times?

2. Change the time to receive the attempt again.

3. Send a short message to yourself to see if there will be repeated reception.

4. Try to replace the SIM card of other mobile phones. If it is invalid, it is recommended to contact the SIM card network operator to verify the current network status.

5. If the network status is normal, it is recommended to back up the data in the mobile phone and restore the mobile phone to the factory settings.

If the problem still exists, it is recommended to send the mobile phone to the nearest after-sales service center for testing with the purchase invoice and three-guarantee certificate.