Prepaid phone cards are a convenient way to make phone calls without needing a traditional phone plan. These cards come with a specific amount of credit that can be used for calls, often at lower rates than standard phone services. Users can purchase these cards at various retail locations or online, and they typically have a unique PIN to access the credit. Once you have a prepaid phone card, you can use it to call local or international numbers. The card's balance decreases with each call, and when the credit runs out, you can simply buy another card to continue making calls.