As you've probably been made aware, it's the 10th Anniversary of the iPhone going on sale.
I was a first week early adopter (I accidentally drowned my Palm device and cellphone kayaking on July 4th, and the timing seemed fortuitous.)
Slashdot's Coverage (speaking of things that may also seem like history) linked to John "Daring Fireball" Gruber's iPhone First Impressions.
As he mentions, probably the biggest lack in the first device (other than, arguably, the app store) was copy and paste. That was an interesting choice to punt on, to let it wait until a future generation of the product could get it right...
One of the biggest "WOW" factors though was the web browser- especially the scrolling which he describes as:
Real-time dragging is such a priority that if the iPhone can't keep up and render what you're dragging in real-time, it won't even try, and you get a checkerboard pattern reminiscent of a transparent Photoshop layer until it catches up (typically, an instant later). I.e. iPhone prioritizes drag animation over the rendering of the contents; feel over appearance.As the hardware has improved I haven't seen that checkerboard in a while, but yeah- it felt SO GOOD, the perfect compliment to how the capacitive touch screen was allowing much more vibrant finger interaction than the stylus-or-fingernail screens that came before it.