Is it possible for me to use the TB in a place that doesn't have verizon's LTE network yet? And also, because I don't live in an area with 4G capabilities, whcih plan would I need to get? A 4G or 3G? Lastly, when I go to a place that does have 4G coverage, would I be stuck using 3G or could I get 4G? Does it depend on the plan I get?