Application support made the iPhone immensely popular, but also seems to be unique (or relatively affluent) with the iPhone. As BlackBerry and Windows Mobile (including Phone 7) devices either have a lacking or no marketplace to download free applications, this drags them way behind Apple.
Forget the Android. I have one friend who has an Android phone and he threw it against the wall in a fit of anger after a week of owning it. And this man, rest assured, is the most laid back, calm and non-violent gentleman I have ever known.
The QWERTY keyboard is one of the main things that grabs the attention of the student nowadays. As Microsoft's Pink phone seems to have this, it could well make it a popular choice once it decides to show the light of day.
But frankly, I'm banging my head against a brick wall because Microsoft, RIM, Apple, and all the other major mobile corporations just don't make it clear that they even care what students think. But with this wave of new design prototypes and detail focused on multiple communications, I'm starting to think otherwise.