The real web available in your pocket. If you weren’t using the mobile web before then, it was a decidedly second-class experience until mobile Safari launched. It took Google 2-3 years after the iPhone to get Android to be comparable and by then the App Store was booming, which basically doomed all of the old phones. Previously selling apps required paying off each carrier and giving huge percentages of the sales, so there were almost no apps of decent quality available. At WWDC 2008, there was spontaneous applause when it launched with much better terms, hard as that may be to believe now.