What drives me crazy is that T-Mobile is unwilling to implement band 12 where I live, even though I'm surrounded by band 12 in neighboring counties. When I called them last spring, they said they would upgrade to band 12 by the end of the summer. So I called them again the other day to ask what was up because the service on my iPhone 7 is still not great and draining my battery much faster than Verizon ever did, and they said that they're actually upgrading right now, but it's to this 600MHz crap that nobody can use yet. I asked if they were also installing the 700MHz band 12 stuff that they said they would, and they said no, but mentioned something about maybe 1850MHz? I can't remember exactly, but I don't think that band really helps with indoor reception as much as 700MHz. It's cool that they're trying to future proof, but why did they buy all this 700MHz spectrum and not fully implement it? Their customers are suffering now and don't care if their network might be better at some point when we buy a new phone in the future. Both the 6s and 7 support it now!