This app allows us to communicate with each other. Join the UberPhiladelphia channel. More information is available at zello.com A good way to connect with your fellow drivers. Let's find out where the hot spots are, who's getting screwed on guarantees, and tell us all about that last ride who actually tipped you! Android: https://play.google.com/store/apps/details?id=com.loudtalks&hl=en Itunes https://itunes.apple.com/us/app/zello-walkie-talkie/id508231856?mt=8 There's even a desktop version - get it at zello.com.