A method is provided for controlling, i.e., changing, the medium or mode for interaction between a user of a wireless device and an application accessed by the wireless device. The method includes the step of a) determining the currently available bandwidth for transmissions to the wireless device over a wireless network, and b) of changing the medium for interaction between the user of the wireless device and the application from a first medium (e.g., audio+video) to a second medium (e.g., audio only or text) based on the bandwidth determined in step a). Steps a) and b) can be provided via function calls or other instructions in the application, can be provided by a network entity, or, alternatively can be based in part by user interaction with the wireless device.