Joke Collection Website - Public benefit messages - Obviously sent a text message, why didn't the other party receive it?

Obviously sent a text message, why didn't the other party receive it?

The message was sent, but the other party did not receive it, for the following reasons:

1. The other party set up a firewall and refused to receive SMS;

2. The other party's mobile phone is turned off and there is no signal, resulting in the other party not receiving the short message;

3, communication problems, communication errors caused the other party not to receive;

4. The other party's mobile phone is down and can't receive SMS.