Where is the anti-interference of Xiaomi mobile phone?

The anti-jamming module in the subdirectory of Xiaomi mobile phone desktop system can only intercept calls and text messages through black and white list keywords, and cannot set interception numbers in batches. It's been almost half a year, and Xiaomi's mobile phone has not been reduced in price or upgraded ..... depressed. By the way, we like Xiaomi. It's not about Mi Hei. Mihei, please shut up.