This is a must have application for all iPhone device. Viber is an iPhone application that lets you make free phone calls to other iPhone users that also have Viber installed. Can you imagine how much you could save if most of people you had called often are iPhone users?
All you have to do is just invite them to download the application. Then check your contacts, you can see which of your iPhone contacts is already on Viber.
When you use Viber, your phone calls to any other Viber user are free, and the sound quality is much better than a regular call. You can call any Viber user, anywhere in the world, for free. All Viber features are 100% FREE and do not require any additional “in application” purchase.