Have 4G service some of the time and only want to use GrooVe IP when you're connected to 4G? Is 3G too slow to maintain a good voice quality, but LTE works better for you? This app is for you! When your device gets 4G connectivity, it will launch GrooVe IP. When you lose 4G connectivity, it will stop GrooVe IP. Notes: Obviously requires GrooVe IP in order to start GrooVe IP.