There are a whole new category of cell phones hitting the market lately. The most recent and innovative is the Apple iPhone. It is probably the closest thing to a hand held, portable computer there is yet.
There are other new innovative cell phones, too, that have nearly the capabilities of the iPhone but none really match up as equal. For one, the iPhone is 3G. That's nearly as good as your desktop computer on DSL. Yes, the iPhone is full Internet capable and does not even need a keyboard.