I'm looking at picking up a Sprint Version of the LG G2 from Craigslist. The seller claims it can be used on Verizon with 4G LTE. However the specs for the Sprint model don't show the upper 700 MHz that VZW uses. So is it possible to flash another radio baseband? My primary is Verizon but right now I'm using AT&T Straight talk. Have a S4 now and it gets HSPA+ that's fine with me. But it needs to support VZW LTE and I don't think it does nor can it be done.