With regards to the $1000 trade in credit, here's what doesn't sit well with me (correct me if I'm wrong) -- Trade in my iPhone 11 Pro Max 256GB which has value (not $1000, but lets say $600). If I stick with AT&T (which I plan on doing), I get $1000. If I leave AT&T, what happens with my $600 that the phone was actually worth? The terms seem to state that if I quit, they get to keep my trade-in while giving me little to nothing for it. Am I understanding this correctly?