Developing for mobile

Hi,

So far we developed for iPad, or converted existing into mobile.
We need to start developing to mobile. 
That the whole design is aimed at mobile learning. Consumed on a smartphone. 

Would love to see examples of content developed for mobile. 
Which smart, innovative, creative ideas are there out there? 

I'm more interested in the ISD part than in the production\technical part at the moment. So the solution can but doen't have to be produced in SL2. 

If you can give a link - that would be the best. 

Thanks!