Buy a smartphone? In enterprise?
Given the typically ultra-locked down approach to most enterprise IT I've ever encountered, a combination of justified and unjustified IT paranoia, and cheapskate approaches to kit make employee smartphones an outstanding waste of money.
My current employers issue crappy Galaxy S3 minis as the standard handset. Obviously selected by a miser with very small hands. Then they overlay their outsourcers crapware email solution (T-mobile, that's your mention) rather than the Android stuff. Then they encrypt the device - good for security, but slows basic operations down to a crawl on such a low end device. And then they launch group policies that disable the camera (for "security" reasons, ignoring the fact that employees' own phones aren't confiscated at the door), force multiple PINS and passwords (no, we don;t write them down or choose easy to guess ones, honest), prohibit loading of any media files, and disable storage (never mind legitimate work use, we wouldn't want you copying any files, would we?).
Quite frankly, if enterprise IT departments had brains they'd be dangerous.