- The Update system was extremely confusing, I had a hell of a time just figuring out how to update to 8.1, including needing a firmware update, figuring out how to apply a firmware update, then doing it three times over because I had that many. While the system eventually notified me of the system update, it remained silent on the firmware.

- The UI language was fantastic, seriously I loved the way the phone handles information. The only issue there is that many apps like Facebook and what have you totally ignored it, and Microsoft let them on anyway. What good is building a UI like that if you're going to let the developers just do whatever they want anyway?

- The app store in general is extremely limited. I realize Microsoft can't do anything here but I'm holding them partially responsible because of how late they were to this game.

- My Icon would get very hot with only regular use. A quick flip through twitter or even just some websites and the back of the device became uncomfortably warm.

- The keyboard is AMAZING. Seriously Microsoft knocked it out of the park on that one.

- The device felt well built and (aside of the heat issues) never presented as though it was poorly made. Connectors were solid, battery life was very good, and the bright colored interfaces with the white-on-black text make it genuinely a pleasure to use.

Eventually I had to face reality and bail (too limited on capabilities, plus I'm an iOS developer and at the time they just released the 6, the first decently sized iPhone) and went that way. That said should I change careers I'd definitely look the Windows Phone way again.