Designing and architect-ing for the mobile is inherently very different from designing for the web.
Mobile application development requires technically a new stack of technologies and hence new design principles. There are fundamental differences in the design best practices, guidelines and design patterns. A web development team cannot always do mobile development. They must have the necessary expertise on the mobile front to be able to diversity into this domain.
Doing specialized mobile development requires addressing the following design aspects:
At Atlogys, we have published a whitepaper catrered for mobile application architecture design. This is available at: www.scribd.com/doc/127341980/design-and-architecture-for-large-scale-mobile-applications