What do i need for this iphone?

So i got an iphone 4 from amazon, its already under verizon and its no contract. What do i need to get to get it activated? Is there some kind of activation kit? There's no sim slot thats why i'm confused. Or go i just buy a 45$ plan?

Under 5 you don't have a sim slot. Your wireless company has to activate it.

You need to activate the phone with Verizon. You'll need the IMEI/MEID which you will find in Settings>General>About and look for MEID.

Go to this link: https://billpaysvc.verizonwireless.com/vzwprepay/prepay/nos/showPhoneActivationPage.action

and go from there.

I think you are supposed to call Verizon or go online to the Verizon account to activate! I would suggest calling a Verizon rep and asking what you should do. Because i'm with Verizon but i'm on a contract and all we do is go online but since your iPhone 4 is not on a contract i'm not entirely sure!