sorry! i didn't mean to imply it was time spent on the internet; it was a comparison of market share, or usage measured in page hits. i should have been more clear. also i was mentally averaging some factoids; mobile safari has 4x the market share of windows mobile, and 50x the market share on google searches.
Study: Surprise! iPhone owners don't talk as much
"It turns out that iPhone owners are using the gadget more for non-phone purposes than people with similar devices. With Internet and media usage numbers comparatively through the roof, Apple seems to have a leg up in the race towards convergence."
link
Google: iPhone searches spanking rest of the mobile world
"We already know that the iPhone has taken 28 percent of the US smartphone market, and shot up to the number two spot in just six months. Worldwide iPhone has the number three spot with 6.5 percent market share. Well, it seems the iPhone is also responsible for the majority of searches from mobile phones. Gundotra had Google engineers double check the logs when an analysis showed the amount searches coming from iPhones was 50 times higher that any other handset. 50 times. That's Kind of a Big Deal™."
link
Mac OS X, Safari usage still flat in March 2008
"Finally, the iPhone saw another increase in usage of 0.01 percent, which puts it at 0.15 percent total. To put that in perspective, Linux has 0.62 percent. At least the iPhone is ahead of Windows CE/Mobile, which has 0.06 percent. How long have the various incantations of Windows Mobile been out again? Oh, yeah, forever compared to the iPhone."
link
by march mobile safari had .23% of the US internet browsing market, making it the #1 handheld internet device there. globally it was second only to nokias which had .25% of the global browsing market. so the iphone, only available for about a year now, and in very few countries, has almost as many page hits as all nokia phones in the world, and about 4x the hits of windows mobile.
link
what the iphone lacks is ms exchange support and support for ms office documents. that's coming in the new release this summer.
personally i don't find the internet access slow at all, but it's not like i am doing major net surfing from my pocket. with my internet use it's mostly using the maps to get around town, searches to find businesses, looking up some occasional wikipedia entry, checking the weather and movie times, and emailing photos to friends. it's fast enough for all those things.