How to share my unlimited data on verizon?

I currently have an Iphone 4s that was grandfathered into unlimited data. I was wondering if there was any plan I could get that would allow me to share my data with my son, who will soon be getting the new iphone 5s. Or, is there any way to get him an unlimited plan? I currently play 30$ per month, and if i could share that or just get my son a 30$ plan that would be great.

Added (1). He already has a plan, and we already share 2000 minutes and unlimited texting, He just doesn't have data

In order to have a second phone number hooked up to your account you would have to change your plan. In doing so you would most likely loose your status of grandfathered into unlimited.

Additionally if you add a second phone number (second line) to your account you will have to pay extra for that - every service provider works this way.

Just call Verizon customer service - they will be able to answer all your questions without having to change plans.

The only way to cheat the system is to you use your phone as a Wi-Fi hotspot that your son would be able to connect to. But in order to do that you would have to physically be next to each other every time your son wanted to connect to the interent.

He should be able to just join under you to qualify for the unlimited service since the bill is still in your name. I would definitely consult a sales representative for more information on their policy.