What about data transfer speed? Apple apparently hasn't lost much, claiming that the iPhone 4S running on 3G networks including , doubles the iPhone 4 download speed to 14.4 Mbps and uploads at 5.8 Mbps.

"This is an amazing download speed, and we'll have to see it to believe it," Freimark says. "If they can engineer their way to 4G speed out of a 3G connection, it's going to be pretty remarkable."

While everyone loves faster download speed, business users have the most to gain. They are often downloading business intelligence reports with iPhone apps such as Roambi. Also, more and more data-heavy critical business information is becoming available on the iPhone in the form of podcasts and video.