This is great! Better late than never. I hope that Microsoft will continue selling unlocked flagships upon release. The unlocked Nokia Lumia 1020 windows phone is now on sale for $549.00 at Microsoft Store. That version doesn’t list the extra bands that T-Mobile uses. RM-877 – 3G: 850 / 900 /1900 / 2100. 3G radio would be problematic to get faster speed on HSPA+. It lacks 1700. If you’re not on 4G LTE coverage area you’ll fallback to 2G EDGE. I would NOT recommend this for T-Mobile USA users.