What would be your ultimate mobile device?

Tristan Brotherton writes: "There is no doubt that finally the mobile market is starting to move forward with some innovative new UI's from Apples iPhone, The much rumored forthcoming Google phone that will presumably be a thin client device interacting with their numerous online applications, and of course the progress of linux as a mobile OS to rival Symbian and Microsoft's offerings, along with smart new 4G software based networks like Truphone. My question is simple, where do you think the mobile market is going? What would be your ultimate device / service? What do you think the non-geek mobile market needs? Are there particular technologies you think will play a major role in creating the next break through device or mobile application?"