4 - Clouds
Google's done a lot of work on the Play Store of late, transforming it from the old "Android Market" for apps only into an iTunes-style general content hub, offering books, movies, TV shows and all sorts of other stuff in addition to software. It's an important step on the road to cementing Android as a viable competitor to the Apple juggernaut.
Even with the gap closing quickly, however, it's tough to argue that the combination of iTunes and the App Store isn't still a bit more robust than the Play Store in terms of media content. If you're serious about music, TV and movies on the go, the iPhone could be too tempting.
5 - Finally, an iPhone with 4G
For a company that prides itself on being at the leading edge of technological innovation, Apple's sure taken its time coming up with a 4G-capable phone. It's easy to cast the iPhone 4S's lack of LTE connectivity as a sop to cellular partners like AT&T, who swear up and down that their poor networks are creaking under the strain of greedy smartphone data hogs, but 4G/LTE is now an expected feature at the high end. Releasing another 3G+Wi-Fi-only device would effectively cede the LTE segment of the market to its competitors -- which, to my mind, makes it unlikely that Apple will do so.
So, in all likelihood, the iPhone 5 will be the first of its line to boast 4G connectivity -- removing one of Android's differentiators and (potentially) pulling some Android users into the Apple camp.
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