Good news for iPhone and Phone Cards users, you can use your calling cards much easier with your iPhone. This new application by iPhone can be downloaded at iTunes for a small fee, and you can enter your calling cards info (access number, pin, etc) on the application and it's ready to use.
You can store more than 1 phone cards (to call to different countries) and it also supports pin-less calling cards. Using your phone cards on iPhone is as easy as 1-2-3. To read more information about this new application, read the article here: http://www.phonecardstop.com/easy_calling_card_use_with_iphone.html