One of the features I miss from utilities on legacy BlackBerry was a vibration when a call connects. James let me now about Call Alert which recently went headless on BlackBerry OS 10.2.1. The app lets you get a vibration, flashing light, and more to notify you of when a call is ringing or connected. Best of all the application is small and has a fresh native interface.
Check out Call Alert for $0.99 in BlackBerry World