Apple's iPhone has long been one of the best business phones on the market, with one major shortcoming: Its pint-size display has always been a bit too small to get real work done. Apple addressed that issue with the iPhone 6, a scaled-up iPhone that finally offers enough screen space for real productivity. Apple did more than give its new smartphone a larger display; the iPhone 6 has been totally redesigned, with a superthin profile and smooth curves in place of the boxy edges on older models. Plus, the iPhone 6 ships with iOS 8, a revamped version of Apple's mobile operating system that adds a slew of new productivity-boosting features for business users.

But Apple still has some catching up to do in a few areas. The iPhone 6 has shorter battery life than other flagship smartphones, and iOS 8, which slick and easy to use, still has some annoying limitations. So should business users upgrade to Apple's new flagship phone, or opt for an Android device instead?