How does opr9 intercept spam messages and harassing phone calls?

You can download Tencent mobile phone housekeeper interception, open Tencent mobile phone housekeeper-protection monitoring-harassment interception management to intercept spam messages, as well as harassing calls and blacklisted harassing numbers.

Blacklist all the numbers that have sent text messages and made phone calls. This can prevent these numbers from harassing users by texting and calling again.