I have the basic version of Unity iPhone and I want to play a very short cutscene before the game starts. Is this possible and if so then how?
You could use a UV animation, and an audio source to emit sound however playing back movies is restricted to Unity iphone Pro and uses the quicktime APIs. On desktop machines playing back movies is achived by using a movie texture which also requires desktop pro.
Your best bet is to go with machinima.
you could go to new scene and make the camera and make text for the people to talk and making them move and everything with animation