Poor / No Service and poor data topic

I recently switched my N3 back to Verizon. (I was on Straight Talk, since the Verizon contract was dropped) because I wanted 4G LTE and better service.... Well, It seems to have gotten worse. Where as I did have service before and H+ (On Straight talk) in the town I live in, I am lucky to get 1-2 bars and 4G. Sometimes it'll jump to 1x and full service for a second, then to 3G with 2 bars... Then Full service no data.... Or sometimes no data / service at all.

I've tried updating my Modem, I was on NC2, Then tried NC4... Now the newest modem with no luck.

My fiancee, her cousin and her brother both have Verizon Prepaid (iPhone 4s, iPhone 5, and some LG device.) and they always have 3+ bars and 4G LTE.


Is there any fix for this? I can't exchange my phone since I am on a Prepaid account now...