I don't know why do some still prefer to use calling card?? I have stop using card, cos they are expensive, sometimes their lines are unclear and they never promise the minutes they wrote...
Just sharing my experience, I am using VOIP service for almost 2 years and it's so much better, line is clearer and cheaper. And currently, I am using this service called Callforeign dialer, they also have their iPhone version, and its easier for me to call home on the go and i just need to get connected to a WiFi or 3G.
Here is their website
http://www.callforeign.com/
I hope these help
