"You also can’t see or install apps that cost money on a developer phone. Actually you can, but not if the app has copy protection — which is almost every non-free app. On the other hand when you upload your app to the app store it’s available within minutes, so you don’t have to worry about an approval process."

That seems unfortunate, as with some of the android phones you essentially want the developer version (or something similarly unlocked) so that you can eg kill background processes when you don't need them to improve battery life