I can confirm that T-Mobile has refarmed GSM 1900 to HSPA in Columbus & LaGrange, GA and Auburn-Opelika, AL where we live. That's the good news, but one caveat, as T-Mobile users realize, the moment you leave any city limit welcome to the world of 2G EDGE. I live in a town of 443 people and despite whatever negatives we have about AT&T; their entire 1900 network is now HSPA+ and their MVNOs are clocking in at HSPA+ speeds of up to 7.2 megs. I continue to use interop/developer unlocked Titans running 7.8 and AT&T has dismal sub 1.5 to 3.0 megs down, but wherever I have refarmed 1900 with a T-Mobile SIM...running on average 4.0 to 7.2 megs down which was extremely refreshing, but the moment I left town, back to 2G EDGE so while it's welcome to see the ugrade, it's not the coverage AT&T has on its network in rural areas which is another sore issue with me because there is absolutely no T-Mobile coverage in the Thomaston, GA area...a donut hole that doesn't appear to be changing anytime soon. You think we pay less, nope!. I have my decision down to the Lumia 1520 on Straight Talk (AT&T) or Note 3 on T-Mobile. My problem is no T-Mobile where my wife and I live in GA and barely...maybe a no bar signal from AT&T on Straight Talk at our other home in Opelika, AL where our kids are. I'm thinking of going with a Wilson Amplifier but I don't know how good these amps are and whether they do what they say...so...more homework.