How does Apple send short messages with the secondary number? How does Apple send short messages with the secondary number?

1. First, you need to open the Apple phone, and then click the information below.

2. Then enter the information interface and click the icon of the pen in the upper right.

3. Then enter the new information interface, click the+behind the mobile phone person, and select the friend who wants to send a text message to the address book.

4. After selecting it again, you can see that the main number appears in the new information interface at this time, and we click the main number.

5. Then, after selecting the account to be used now, click the sub-sign to switch.

6. Next, edit the information and click Send.

7. at this time, in this short message interface, select the top contact > and click information.

8. Enter the detailed information, and you can see that you are using the "secondary number" to contact this person, indicating that we have successfully switched the secondary number to send short messages.