“You can call any Viber user, anywhere in the world, for free. “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.” “Viber is an iPhone application that lets you make free phone calls to other iPhone users that have Viber installed,” the developer explains. While Viber doesn’t make much sense to download and use the app on AT&T’s 3G network, since AT&T offers free calling between iPhone users, it does make a difference for those calling outside their country. The benefits, however, seem to make up for it. Viber works on both 3G and WiFi and, according to Apple pundit John Gruber, who gave the app a spin recently, the voice quality knocks the socks off AT&T’s service.Īdmittedly, there are a few downsides to using Viber as a replacement for your iPhone’s Phone app, Gruber notes. have released a free iPhone application that acts pretty much the same as the built-in iOS Phone application, only it routes the call to VoIP (voice over IP) if the recipients also have Viber installed on their handset.
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