So I just saw the announcement that Samsung has opened preorders for the unlocked S8. I purchased my S8 from Samsung for T-mo. This got me thinking to 2 years from now when I get my next phone and want to sell the S8. If i get it unlocked by Tmo, will it work on all carriers including Verizon, or did it come with only the antenna bands for Tmo (and AT&T?)??