I've had an iphone since March, and whilst overall I'm mightily impressed, there's a couple of things that annoy me about it.
- Contact Searching - Why can't I just tap in a few letters of the name and the relevant matches appear? It works when you're sending an SMS and adding a contact, so copy that functionality over to the contacts App please.
- iPod Searching - Same as above, it would be nice to be able to search for an artist or track name, like you can in itunes. My modest collection of a few thousand songs over a few hundred artists is making it a bit of a chore to find something I want to listen to randomly.
- MMS - Why isn't this supported natively? There's unofficial support for it, so it obviously can be done.