How to cancel the red phone on Xiaomi 8 mobile phone screen

1. First, press the arrow below, and the "Red Phone" icon will appear in the status bar of the mobile phone. Then, according to the arrow below, find and click the "Settings" icon.

2. Secondly, after entering the "Settings" page, click the "Dual Card and Mobile Network" option.

3. Then, after entering the "Dual Card and Mobile Network" page, select the SIM card in question.

4. Finally, in the SIM card information page, slide the circle after the "Enable VoLTE HD Call" option to the left to turn off this function, so that the "Red Phone" icon can be removed.