Interesting that the iPhone is with Cingular. I'm not real happy about that. My experience with Cingular's GSM is that it offers spotty, generally low reception that is limited to populated areas; get into any rural areas (which isn't hard to do in Indiana) and you you lose signal. So I am very hesitant to switch to Cingular even though I very much want to use the iPhone. But i have hope...
iPhone is just the beginning. By 2010 WiMax will most likely be ubiquitous, and then things really begin to change.
I bet Apple is getting into the game early with the iPhone. Relying on EDGE as a stop gap solution until WiMax becomes a reality in the USA (and throughout the World). Sprint Nextel has recently announced that they will be pushing out WiMax 4G service in 2008. That is the same year Apple expects to get the iPhone really rolling; predicting 10 millions units sold. I think WiMax is going to be a huge boom to the mobile market and Apple is positioning themselves to dominate it. I think this is what Jobs meant when he quoted Gretzky: "Skate to where the puck is going, not where it's been."
Sprint Nextel Announces 4G Wireless Broadband Initiative with Intel, Motorola and Samsung