Is there an Android app for synchronizing the contact list with a remote web server via API?

Question

Google

On the web server, the database stores customer data. It is necessary to identify all these clients at the stage of an incoming call. How to organize a caller ID on an Android device based on a list of contacts from its own database? Ideally, I would like to have a list of contacts on the device that is constantly synchronized with my database. But the most important thing is the caller ID. Maybe there are dialer programs with the ability to connect a web hook?

Answer 1

https://xakep.ru/2017/03/14/android-hidden-call/