I got a flyer in the mail from Verizon stating that they would take my 3GB Data Plan and make it 6 GB for the same price. The only way you can get this is to call the number on the flyer. When I called I indeed got Verizon and with very little hassle they upgraded my plan with no change of price. They even went thru what the bill would be and it was exactly the same. It was really easy and simple with no BS at all. They said it was because I was a "Loyal" customer. I think you have to be on their list but here is the number to call, give it a try.
855 830 7678
855 830 7678