Modern technology promises mobile users Internet connectivity anytime, anywhere, using any device. However, given the constrained capabilities of mobile devices, the limited bandwidth of wireless networks and the varying personal sphere, effective information access requires the development of new computational patterns. The variety of mobile devices available today makes device-specific authoring of web content an expensive approach. The problem is further compounded by the heterogeneous nature of the supporting networks and user behaviour. The notions of "typical user" and "typical user behaviour" are no longer applicable for many Internet applications. This research investigates the challenges posed by these problems, and proposes a context-aware adaptation framework (FA?ADE) to bridge the gap between the existing Internet content and today's heterogeneous computing environments. A pilot implementation of a facility for testing and performance evaluation of FA?ADE is also discussed.