Yep. As this behind the scenes video shows, there were a lot of things that Jobs and the Apple techs and software people did to make the first IPhone demo work:
On the surface, this presentation looks so casual; but in fact it was carefully choreographed. Every click, every scroll, every sequence. “When you run into bugs today that’s because it’s been worked out like then it’s just the first time, like you’re and you would go: okay press this one… now wait two seconds press this now; but it was so choreographed if you went off the script it could [fail] so you had to make sure when the demo worked, to know exactly what they were supposed to do at which time.”
However, the biggest problem was that the iPhone ran out of memory. It had to be restarted again and again. Jobs had a number of demo iPhones onstage with him to manage this problem, if memory ran low on the one he had, he would switch to another while the first was restarted. We would have backups upon backups upon backups, so that if something died you could pick up.
Another one was right next to it to continue the demo. But given how many demos jobs were planned, there were far too many potential points of failure, and the people working on this keynote knew it.
"I had actually brought a bottle of scotch we’re in the audience or watching the whole thing unfolded we decided whoever was responsible for that particular, you know, chunk of the demo had to do a shot, and so after each cut like they’re giving me a ‘there give me a shot’ oh my god by the end of the announcement I had done like six shots of scotch and I was hammered, oh my god!
So each time a demo went without a glitch, a team member did a shot of scotch to celebrate: call on an iPhone. A shot of scotch. New York Times browsing? A shot of scotch. Finding a Starbucks? A shot of scotch, by the time the presentation ended the team was half drunk!
It was the worst presentation of their lives… It was the best presentation of their lives.
“You know, we had never once seen a demo run-through go as well as announcement day went through. And so when you see that reaction the crowd that year, it’s it was unlike anything I think I’d ever been through, now Steve Jobs took many risks to present the iPhone to the world. The best he could, the whole company was at stake during that presentation, and this is not an exaggeration, if the iPhone failed, there was no new product to back it up; no plan B, you know it’s a rollercoaster ride and if it aint scary, it ain’t fun. Realizing in advance the importance of this presentation.”