when considering the subject, the first consideration is that an I phone not a phone but a computer with a phone ap.
It is the many computer applications above and beyond the phone ap that are of real value.
And with LTE/LTE Advanced on the horizon, even that will be irrelevant, as LTE forces all telephone calls to occur across the Internet—basically, Skype & al now compete directly against VoiceStream/T-Mo, Verizon, AT&T, &c.
Also, I’m smart enough to know that the Apple development ecosystem is quite oppressive—they can reject your iTunes app submission for no reason at all, coming from platforms where just about anyone with a computer and $0/$750 could make the next killer app.
No, that’s not a range—that’s two distinct values—$0 for the A.D.K. and a Java compiler toolchain, ~$750 for a Visual Studio edition that includes Windows Phone development