There are two general types of Verizon Wireless phone plans: “prepaid” and “postpaid.” With prepaid service, you pay for your phone calls in advance. Verizon does not check your credit, and you do not have to commit to a long-term contract with Verizon. You pay as you go. With postpaid service, you are committed to a long-term contract with Verizon and you pay a monthly rate for select services. If you have a prepaid Verizon cell phone, it is possible to upgrade the phone’s service to a postpaid plan. It is also possible to add the prepaid phone to an existing postpaid service account.

How to Activate a Prepaid Verizon Phone That is Still Active on an Existing Account  7 Steps  - 8