The iPhone's marketing was very good. I'm not sure there was anything revolutionary about it.
Edit: Rather than answer individuals below, I'll state my terms here. Revolutionary indicates a complete change - the overturning of all that was before. We already had phones, we already had pocket computers, we already had phones that were pocket computers, we already had phones that were pocket computers that you could get extra programs for, we already had increasing use of them as time went on. We already had.