Answer to: Call Management has stoppedI had the same issue this morning on my LG Phoenix 3. I called AT&T customer support. The person I spoke with said they had JUST received notification about how to fix the issue... It worked for me: 1. Go to your Apps; Find ATT DriveMode; Uninstall updates 2. In settings, go to Apps, DriveMode, and Disable app. Hope that helps!