What does VG-2 enable?

If you enable VG-2, your detector will alert you to the presence of a police detector that scans for radar detectors which may be banned in your state. However, if you do not live in a state where radar detectors are banned, it is recommended to deactivate the VG-2 function as it will help speed up radar detection.
The Judge, Phantom-T and RMR-C495 do not need VG-2 or VG-3 feature, they are 100% undetectable.