Camera can't capture video like most other smart phones, and you can't send picture messages. It doesn't even feature any of the major messaging services(MSN, AIM) like most other smartphones. All those things are features on the helio, which is half the price of the cheaper Iphone.
and as you said, the keyboard isn't great.
This is what I mean by it doesn't do things as well. Sure it's a pretty piece of hardware, but I can get a Zune and a helio ocean for the same price as the 4 gig Iphone and get a better value out of my 500 bucks.