Viber is a great iPhone application (Android and Blackberry soon) that you can use to make free phone calls. Even on the iTouch too! Very valuable for the kids, if yours are like mine and use up credit on phones like bats out of hell.
What’s more, its completely free, there are no adds, there is no registration and no need to add contacts. What Viber does is use your existing contacts and numbers and puts an icon on the name if they have downloaded Viber. If they haven’t yet downloaded Viber you can send a free text message to tell them. You can also use Viber from anywhere in the world! From what I see, there is no reason not to try it.
It get better … Viber now has an update; Version 2.0.1 has added free text messaging. This needs no explaining as its as easy to use a a standard phone. In this update Viber has made a few more changes and ironed out some bugs. (messy)
We’ve used Viber a few times now and it seems to be fully functional.