Well I've decided to leave sprint after buying the note 4, only to realize that with sprint's new "spark" network you can't talk and surf(use data) at the same time. So that means you can't use apps like instagram, Facebook, or even use the gps during a call. I think that's ridiculous, especially on a "flagship phone" I had no problems whatsoever doing this on my samsung galaxy s4. So after 13yrs with sprint i'll be leaving them tomorrow.
That is so true about the mountains but i love the mountains as it is my home. Up there even Verizon has dead spots and alot of calls only. That is to be exspected.