He is similar to an incoming call firewall.

The following is taken from Baidu Encyclopedia.

Strange caller id

As soon as you answer the phone, you know who is calling, and you can easily deal with harassing calls. With the help of a powerful search engine, we have collected 30 million pieces of number information, and a large number of databases have responded to all kinds of strange harassing calls, truly realizing worry-free answering.

Strong anti-harassment

Prevent all kinds of intermediary, sales promotion, fraud and other spam messages, and intercept them immediately and effectively. Blacklist function, away from unnecessary harassment, and call attribution function can easily predict where to call.

speed dial

Support to query the address book through short spelling and number search, and contact others conveniently and quickly. In the information age, efficiency is king.

Super phone book

One-click query of tens of millions of telephone numbers, such as express delivery, customer service and ordering food, covers the telephone numbers, addresses and other related information of restaurants, hotels, express delivery, hospitals and other industries in major cities across the country.

Marking function

When you receive a call from an intermediary, such as sales promotion, fraud and express delivery, mark it immediately, help others and benefit yourself, which is conducive to the second answer and avoid harassment.