Saudi Numberbook application: know the identity of the caller and block it

Application overview:
Numberbook is the world's largest phone number tracker and directory. It allows users to search for names and phone numbers in the busy world directory easily via their mobile phone. Includes both fixed and mobile lines. Users can also edit their personal information or even delete it completely from the global database. The application also promotes privacy, as it keeps the user's personal information confidential.

How does the app work?

Users can search for phone numbers in the global directory.
Names and phone numbers can be searched to find the desired contacts.
Users can delete themselves directly from the global database via the app.
The username in the database can be modified or set through the application settings, in addition to integrating it with social media platforms.
The app provides the largest directory of phone numbers both local and international.
Information can be shared with friends by integrating the app with social media platforms.
Required permissions:

Receive/read your text messages (SMS or MMS): Requires to specify the sender.
Full Network Access: Required to communicate with Numberbook servers and perform searches.
Receiving data from the Internet: Required to receive push notifications.
Direct dialing of phone numbers: Required to make calls directly through Numberbook.
Read phone status and identity: Required to detect, answer, and end events such as incoming calls.
Disable screen lock and prevent device from sleeping: Required to display caller ID during incoming calls and receive push notifications when the device is screen locked.
Edit your contacts: Requires to save contacts in the phone book.
Read your contacts: Required to check if the number is in the phonebook and know who is calling.
Search for accounts on the device: Required to receive push notifications.