Did Apple 1 1 and 13 send a message indicating that they have been read?

Apple 1 1 and 13 sent messages indicating that they had read it. IPhone SMS has been read and sent only through imessage of Apple. Turn on the read receipt function of SMS, and the other party will know whether they have checked the information. If not, you can only see whether the message has been sent to. Both read and sent indicate that the message has been successfully sent to the other party's mobile phone, and read indicates that the other party has read the sent short message.

The meaning of the information read.

Apple's mobile phone sends a text message to know what the other party has seen. If the other party has set a read receipt, it can be seen. If you don't use it, you can't see it The multi-touch technology adopted by iPhone and its friendly user interface are considered to be the decisive factors for its success, and also have a far-reaching impact on the smart phone design of other manufacturers.

Open the settings, slide up to find the following information, click enter information, find the iMessage information, and activate the button to the right of iMessage information.