Recently volunteered to research this phone. Big mistake. How many non-CDMA models are there of this phone--two or three? I know 2013 had one that does up to HSPA+, but does 2014 have one that does up to LTE, or one up to HSPA+ and one up to LTE (so two for the year?) And which one(s) of these has a micro SD slot?
I would also appreciate model numbers and corresponding pricing (Amazon's is fine...if they have all the models) so that I can keep track of which is which. Thanks.