Joke Collection Website - Blessing messages - Why can't Apple's mobile phone reply to the message starting with 10?

Why can't Apple's mobile phone reply to the message starting with 10?

The possibilities of this situation are as follows:

1. SMS setting error. The SMS reply function may have been turned off in the mobile phone settings.

2. Signal problem. You may not be able to send or receive short messages in areas where there is no signal or where the cell phone signal is weak.

3. Incorrect contact setting. The contact has turned off the SMS function and will not be able to send him SMS.