How to switch secondary numbers when sending messages

Click the current default SIM card, and the secondary number and primary number will pop up at the bottom of the screen for selection. If you select the secondary number at this time, you will switch to the secondary number to send short messages.

Open the home page of the mobile phone and click Information to enter, as shown below. Enter the information interface and click New, as shown in the figure below. Enter the new interface and click the recipient, as shown in the figure below. Enter the recipient number or add an address book, as shown in the figure below.

Select a new information interface. The method of switching the major and minor numbers by SMS: first, open the new information interface, then click the minor number in the new information interface, and finally click Select from the expanded options.