Android Permissions

All you ever wanted to know about Android permissions

android.permission.WRITE_APN_SETTINGS

change/intercept network settings and traffic
Allows the app to change network settings and to intercept and inspect all network traffic, for example to change the proxy and port of any APN. Malicious apps may monitor, redirect, or modify network packets without your knowledge.

Belongs to:

android.permission-group.SYSTEM_TOOLS

System tools
Lower-level access and control of the system.