A) Location.

B) Which specific phone are you using?

C) why woud you be sending stuff form the jetpack to the phone? That makes no sense. Why woudln't you just be downloading to the phone directly? If the jetpack conencted to you PC is fine then it's not a Verizon issue since the network is clearly fine. if you had a coverage issue nothing would work

You leave out a lot of information and assume a lot.