My own experience seems to confirm the accuracy of the commercial. I was on a flight where we sat on the ground for 5 hours because of a weather delay. I noted the captain speaking on his cell phone many times, but the phone calls did not help us get in the air any sooner. It was not an iPhone (because it was a few years ago and no iPhone yet).
Therefore, anecdotal evidence based on a single data point proves that not using an iPhone will not save you any time.
