For business use I wouldn't change from blackberry, the bottom line is BB is not a toy I don't need the latest angry birds version, or any of that stuff, I need long battery life , and to have phone clarity, get my emails respond, read word and excel and ppt, and that's it. The Bberry is more then well suited for these task and to be honest I can't believe any serious IT shop would rave about now offering iphone 4s, I could see it for employees wanting it, but I see no technical reason whatsoever to trade in my bberry for iphone. But then again, I have both my company phone is bberry and I wouldn't change it for a second, and my personal cell is iphone 4.