Interesting innovation Android 12 disappointed enthusiasts. Restricted network mode didn’t turn out to be the expected system-level firewall

This time, enthusiasts from the mobile developer community XDA Developers have found one of the future updates features by digging into the AOSP (Android Open Source Project) code. 

The new feature is internally called restricted networking mode. Interestingly, in a note describing the innovation, enthusiasts expressed frustration that the feature does not add the hotly anticipated customizable system-level firewall. 

However, this mode may well prove useful. If you activate it in the settings, then only those applications that have received special permission CONNECTIVITY_USE_RESTRICTED_NETWORKS will connect to the network. Such permission will only be issued to specific system applications and/or installed by the manufacturer. Thus, in restricted network mode, any applications installed by the user cannot access the Internet. 

The first developer preview of Android 12 is expected in February.