The Japanese version of Apple sent 5 text messages.

First of all, the common reasons why mobile phones can't answer calls and their solutions are as follows:

[1] Check whether the mobile phone is in arrears, and suggest to pay for recharging;

[2] Check whether the mobile phone is set to call forwarding, airplane mode on, call barring, etc. It is recommended to cancel and try again;

[3] Check whether the function or signal of the mobile phone is normal, and suggest to change the mobile phone or location and try again;

[4] If roaming to other places can't be used, it is recommended to check whether the local network signal is normal and whether roaming permission has been opened for this number;

[5] Try to restart or replace the mobile phone to see if you can answer the phone;

[6] Take the mobile phone card to the local business hall for testing or replacement.

Second, the mobile phone can't send SMS processing method is as follows:

1. You can change your mobile phone to see if you can send and receive short messages.

2. If you can send and receive short messages, I suggest you re-insert the card into your mobile phone and send yourself a short message to see if you can receive it.

3. If not, I suggest you check whether there is something wrong with the sim card;

4. Check whether the number of the SMS center is set correctly;

5. Bring the mobile phone card to the local business hall for testing or replacement.