Cost
When purchasing prepaid phone cards, compare the price per minute of different cards to see which one gives you more call time. Some prepaid calling cards may include other charges, like a connection fee. These charges reduce the actual amount of calling credit you have. Read the fine print before purchasing to learn about the terms of use.
Features
Some calling cards are for a one-time use, while others are rechargeable. A rechargeable prepaid phone card is convenient because you do not need to buy a new one when you run out of credit. You can follow the instructions provided on the card to add more money at any time.
Coverage
When buying prepaid phone cards, compare the areas of coverage on different cards. Some cards can only be used domestically, while others can be used internationally. Make sure the calling card you buy covers the specific region you will be calling.