Unfortunately a number of people who did not win Lumia phones at Build were told to go buy an unlocked phone from the Microsoft Store. I decided to buy a unlocked TMobile Lumia 521 from the store, brought it back to Canada and found it was actually locked to TMobile. After phoning the Microsoft Store they confirmed that the phone is NOT UNLOCKED, and T-Mobile will unlock it for you. However TMobile will only do that if you are a TMobile customer.
The Microsoft reps at Build did not tell us that, nor did the sales people at the store mention that when I paid the bill. Could someone at Microsoft step in and clear this up for not only me, but a significant number of other international attendees? The manager at the store has confirmed this has turned out to be a huge issue