The data management and bandwidth effiency is shockingly poor, it is the worst smart phone on the network.
The security on it is very poor, possibly due to the historic apple opinion of 'people only hack windows, apples are safe' which is a load of crap.
Blackberry make the only commerically available secure mobile without requirements to add specific extra security modifications.
They are the ONLY company I know of that charge for their Software Development Kits - last time I checked they were over £500. That's just seriously arrogant in my opinion.
I have worked for both Apple and Microsoft and they are as bad as each other. The worst phone on the market for security at the moment is the new windows phone (HTC Mozart)
I would love something that helped me count my sheep instead of getting out in the cold to count them especially at 5am on a winters morning