Sharing of a user input interface of an application session of one application between two or more applications

A primary application and a secondary application installed on a mobile communication device are both configured to obtain input from a user of the device through an application session of the primary application. The primary application transmits a notification to cause the secondary application to begin execution in the background. The primary application further transmits a request for user interface (UI) information to the secondary application. Based on UI information received from the secondary application, the primary application generates a graphical user interface (GUI) including an interface for receiving user input relating to the secondary application. The generated GUI is displayed on the device in the application session of the primary application, and user input relating to the secondary application is received in the application session of the primary application. The primary application then transmits to the secondary application user input identified as relating to the secondary application.