Amazon has an unlocked "universal" Moto G LTE for sale now. I'd like to know if this will work, with LTE support, on T-mobile's $30 prepaid plan (unlimited web - 5GB LTE - and text with 100 min voice). That would be perfect for me as I seldom make calls. T-Mobile's site says that their LTE requires both 1700 and 2100 MHz support. Will the "universal" model support both of those?