To set up the Mi 8's telecom card access point, first go to the phone's Settings menu and select " Web and Internet " Options.
Here, find " Mobile network " Or " SIM cards and mobile networks " Option and then select Telecom card.
In the Settings of your telecom card, find " Access point name Or " APN" Option, click to enter.
Enter the correct access point name, APN, username, and password based on the information provided by the telecom carrier.
After saving the Settings, restart the phone and the access point setup for the telecom card is complete.
You can click Settings, Dual card and Call, click the card you want to set.
Then tap Access Point Settings. I can switch priority 2g3g4g