Just 48 hours a Canadian leak lends hope to a pentaband Lumia 920 surfacing in the wild, comes word out of WPCentral’s user forums that an unlocked developer edition of the 920 is running on T-Mobile’s HSPA+ network. After purchasing the developer unlocked device online, forum user KoukiFC3S managed to get the Lumia 920 functioning on T-Mobile’s US network (reportedly using the 1700MHz band) and even posted some screenshots of speed tests are verifiable proof. The tests certainly use T-Mobile’s HSPA+ network, but the speeds themselves don’t really come close to the HSPA+ 42Mbps speeds some of us are used to with T-Mobile branded devices.

Even with relatively slower speeds on T-Mobile’s network, the promise of using an unlocked Lumia 920 on T-Mobile is one we can’t ignore. If the Lumia 810 or Windows Phone 8X won’t satisfy the most ardent of Windows Phone 8 supporters, grab yourself an unlocked Lumia 920 (wherever you can find one) and enjoy.

WPCentral