Viber , application for iPhone and smartphones Android that allows customers to make phone calls over VoIP for free and send messages to each other without the need for any registration, is updated toversion 2.1.0  and is enriched with many new features. In the new version there is a 'voice engine' that enables fully renovated to have a higher sound quality even on low bandwidth networks such as EDGE, can share the position , to send and receive photos, share them with others, post them on Facebook , send them by mail ...