MO-Call is not a native third-party app like Fring, which we’ll hopefully see hitting the daylight somewhere in June. It’s more like Jajah and provides users with quick access to the low-cost callback service.
In order to use it, simply point Safari to mo-call.mobi and let the interface guide you through the simple process. While you’re there, you can also find out how much they’ll charge you, as all rates are available on the site, too.
Finally, before I let you go, you should know MO-Call is offering some free trial call credits. That’s for iPhone users in the USA, Canada and Hong Kong, only. That’s kinda strange, considering that out of the mentioned countries, Apple’s handset is officially only available in the USA.