After the Android application, Rebtel launched its VoIP app for BlackBerry users allowing them to talk for less. Moreover, when talking with other Rebtel users calls are completely free. Best of all — and unlike Skype (the fact that is emphasized in the press release) — Rebtel doesn’t require a working data connection (3G or WiFi). On the downside though, your voice minutes will be used and that could be a problem for some.
The whole process is done in the background – when you dial an international number (or select an address book contact with an international number), the call is automatically intercepted and routed via Rebtel instead of your carrier ensuring you pay less on every call.
And that’s about it. In case you wonder, Rebtel has become the world’s largest independent mobile VoIP-company with more than 9 million callers and over one billion minutes of international calls logged. The company’s revenue grew more than 100% in 2010 to approximately $40 million…