How to change the apple mailbox to the mobile phone number by sending a text message to the other party?

1. Find "Settings" on the mobile phone's main screen and click Enter;

2. Drop down to find the "Information" option, and click Enter;

3. Open the iMessage function;

4. You need an "apple ID" to log in for the first time;

4. After successfully logging in, click "Send and Receive";

5. Click on the user name of "apple ID" above, and cancel the check mark in front.