Why does the QQ number appear in the message received by the other party when Apple sends a message?

1, using the iMessage function, Apple and Apple directly have a function called iMessage. This function allows Apple and Apple to send text messages directly for free, so the account number of QQ mailbox is displayed. Apple and other brands of mobile phones do not have this function, so the mobile phone number is displayed.

2. As long as the iOS device is upgraded to iOS 5 and can access the Internet, you can send and receive SMS free of charge through iMessage. The security of IMessage is very high.

Extended data 1. If you want to display the other party's mobile phone number, go to Settings-Information.

2. Just turn off iMessage.