A Social Model for a Smartphone. You will need to sketch out the social model that could be used for you and your friends. So it will need to meet your requirements.
Usage Scenarios for Your System.
Goal: Get some practice in writing usage scenarios.
Activities:
Select one or two good representative task threads for the most interesting user class, for example, the customer.
Write a couple of detailed usage scenarios, referring to user roles, tasks, actions, objects, and work context.
Work quickly; you can clean it up as you go.
Hints and cautions: Do not worry too much about the design yet; we will get to that.
Deliverables: A few usage scenarios to share and discuss.
Schedule: An hour should be enough time for this one.