prepaid
adj.adj. paid for in advance, before you actually use the service or get the item.
adj. relating to a service or item for which payment is made in advance of its use or receipt. Often used to describe telecommunications or shipping services.
I have a prepaid phone card for my trip.
The courier service requires a prepaid label to be attached to the package before they will collect it from the office.
While contract plans offer lower per-minute rates, many users prefer prepaid options to maintain strict control over their monthly expenditures and avoid unexpected roaming charges.
Typically used attributively before a noun; often contrasted with 'postpaid' or 'contract-based' services.
I have a phone prepaidI have a prepaid phoneAs an adjective, it must precede the noun it modifies rather than following it.