THIS APP COMES PRE-INSTALLED ON SOME DEVICES. IT CAN BE UPDATED FOR THOSE DEVICES ONLY AND CANNOT BE DOWNLOADED TO NEW DEVICES. The Google Support Services (GSS) app allows you to share your Android device screen with a Google customer support agent during a support call. With GSS on your device, the agent can invite you to share your screen, and guide you with on-screen annotations making it faster and easier to resolve your issue. While sharing your screen, the agent will not be able to control your device, but will be able see your screen to help explain their instructions. You can stop sharing your screen at any time. REQUIREMENTS. Simultaneous Voice and Data connectivity.