Why can't the old mobile phone answer the phone and text messages?

1. The mobile phone is full, which makes it impossible to accept SMS. It is suggested to delete some short messages and multimedia messages on your mobile phone.

2. See if you can send text messages. If the short message cannot be sent, check whether the number of the short message center is correct.

3. Mobile phone settings. It is recommended to back up important data and restore factory settings.

4. Set blacklist or information interception;

5. Replace the mobile phone card and test whether the mobile phone problem is a card problem. If it is a mobile phone problem, it is recommended to send the mobile phone to the after-sales outlets for specific testing.