Viber iPhone App - Features
Discussing the Viber app's features is like giving out the reasons why you should get this app running on your iPhone. First, it has no hidden costs. As long as the person you are calling has also installed the app, both of you can use it to talk as much as you want. Both of your iPhones must be connected to the Internet via 3G or Wi-Fi.
What's good about the Viber app is that you can make phone calls with your friends internationally. It's a VoIP calling service, so the only time you'll get charged is when you connect via 3G. But if done through Wi-Fi, your calls are totally free.
Another nice feature of the app is that it doesn't require username, passwords or registration. It uses your iPhone's number to establish your identity in the Viber network. Likewise, the app doesn't require you to create a separate Viber buddy list. Your iPhone's address book is used by the app. The app automatically highlights friends in your address book that use Viber.
The app also lets you call friends on your iPhone's address book even if they don't have the app installed yet. If this is the case, the app converts the call into a regular phone call.
Other features of the Viber app for iPhone include - always on app feature, no need to add buddies, missed call notification, good sound quality and more.