Icons in Firewall screen

Avast Mobile Security Avast Mobile Security for Android
1

Android Avast Mobile app:
What do the 3 icons in the firewall setting screen correspond to?
One is obviously wifi and the other is the phone service. What is the third?

Q: Clicking on the wifi icon and selecting deny access: How securely does that prevent both in and out communication on that icon medium?

Thanks.

2

Third is roaming.

Completely blocks out communication, doesn’t block in communication, but that kind of communication is almost impossible if not from local network while on Wi-Fi.

Filip

3

Thank you.