just got my iPhone 4
Just got it about an hour ago--actually, it arrived earlier in the day but no one bothered to tell me, since the package looked so small and innocuous! Upgrading from a 3G. Activation and sync took about 5 minutes, easy as pie. I had already upgraded the 3G to iOS 4 (not without problems; my data didn't transfer, and I had to restore everything from a copy in Time Machine, and then it took over a day for Mobile Me to recognize it, for some reason--but all was well by last night), so had already created folders for my apps.
I agree with everyone else--it's a thing of beauty. Heavier and more solid than the 3G. It seems more touch sensitive; home screens swipe to the next much faster. EVERYTHING is faster, including the iPod, camera, NYTimes app--whose icon, like a bunch of others, now looks fuzzy. I'm using my old Sena case for now (it's a little big) until a new one arrives in a few weeks. I plan to get a screen protector, too. I know, they say we really don't need it, but this thing will be handled a lot and get bounced around in a shoulder bag, so I don't want to take any chances.
I was also thrilled to be able to pair it with a very old, tiny, folding Bluetooth keyboard I used to use on a Treo--works perfectly. So I can now go back (after 3 years of really missing the functionality) to not carrying a laptop around in order to take notes.
It feels like a device that's setting the stage for the future, both in design and functionality.