Xiaomi's SMS icon is missing. How to pull it?

There may be an error in the operation of the SMS application. You can enter settings, applications, SMS, and clear data. After clearing, restart the phone, and you can see the SMS icon on the desktop.

When you can't find the SMS icon on your phone's desktop, please click Settings on your phone.

Then click Application Management.

Next, please click all in the upper right corner.

Next, please find out the information in all the emails.

Finally, please click on the SMS to open the license notice.