Why does Apple always send messages to others automatically?

Apple's mobile phone will automatically send short messages because of the * * * enjoyment effect of iMessage, and the sending and receiving records will be synchronized to the device that logs in to the mailbox.

The specific steps of this solution are as follows:

1. Click to enter "Settings":

2. Enter the "Information" settings again:

3. In the information settings, turn off the "iMessage" function: