The script, the sample, and the analysis do not change that much when it's a test with mobile devices—you'll just test on a different screen after all. What changes is the way you watch and film what the person is doing on the small screen.
For tests of usability in the computer, there are very good tools that account for recording the screen and face of the participant and the audio of the participant, all synchronized. The most famous are Morae and its more modest cousin, Camtasia. But what about recording the mobile phone or tablet screens? Is there a Morae for mobile devices? Not yet. But there are several ways to achieve the same effect and you do not have to spend that much.
