this whole thread is pointless.
assuming the OP's what-if scenarios came true, then get another cell that lets you tether, Exchange, multitask etc. this isn't a 30 yr fixed rate mortgage or a some contractual binding agreement, it's a freaking one night stand. you touched it, felt it up, played with it, great. move on and get a new one.
i promise the next one you find will do all the things you wished your current one would do.