Are there any reports sent by SMS on the mobile phone?

The one upstairs is wrong, not all of them are available, but this function is relatively common now, basically, but the old mobile phone does not have this function. Many people are afraid of charging for this function. In fact, it is a function that comes with the mobile phone, and there is no charge. For example, if you send a message to person A, when person A receives this message, your mobile phone will also receive a message telling you that the other party has received your message. If the other party doesn't receive it because of power off or other reasons, then you have no message to reply.

Very detailed! Ha ha!