Bestmobilesaver.com is a service that lets you make cheap international calls from your mobile. No need for a computer.
To call someone directly, first you send their number to Bestmobilesaver.com. They will then generate a local Bestmobilesaver.com number which you can dial from your phone and pay a cheaper rate for calling internationally.
The rates start from less than a penny – see them at www.bestmobilesaver.com
When calling with Bestmobilesaver.com you do still have to pay your main provider (o2, Orange etc) for the minutes you use. However they will only be charged at local rate, or bundled as part of your FREE minutes depending on you mobile package.
Bestmobilesaver.com really is good if you have a big free minutes bundle from your mobile provider and you have lots of friends abroad. When last compared, you can save as much as £1.482 per minute compared to your home provider.