Because Verizon long distance calling cards are prepaid, once the money on your card runs out it will cease to work. Each time you make a call, the card will alert you as to the number of minutes remain. If your card will not ring through to your call recipient, hold the phone close to your ear immediately after you dial to listen for a message that tells you if minutes remain on the card.
Verizon calling cards will not work from every country around the world. Some countries may receive incoming calls, but do not afford outbound calls. For instance, while you can make a call to Armenia from within many countries with a Verizon long distance calling card, you cannot make outgoing calls with the card if you are physically in Armenia. If your card is not working, contact Verizon to ensure that the country you are calling to and calling from are compatible with the card.
If your telephone is on pulse mode, your Verizon calling card won't recognize the number you dial. Phones must be in tone mode to be recognized by a Verizon calling card. Pulse and tone modes relate to the type of frequency used to dial phone numbers with your keypad -- check for "P" and "T" settings on the phone, and choose "T" to go to tone mode.
Dialing to and from foreign countries requires calling codes you are probably unfamiliar with. If you are calling from within the U.S., you only need to concern yourself of the special codes for the country to which you are calling. If you are calling from outside the U.S., however, you must know both the code for your current country as well as the country to which you are calling. As it may get complicated, double-check the required codes and write them down prior to placing your call to avoid problems.
