Recently Viber has grown a lot in popularity and has become the must have application for almost all platforms. Though most of the other platforms have had Viber for quite a while now, BlackBerry OS was among the unfortunate few that didn’t have the privilege of experiences Viber. However after releasing the application in major platforms such Android and iOS , Viber has finally started to pay some attention the Blackberry OS and as a result has finally launched the application for BlackBerry OS 5 and OS 7. Unfortunately BlackBerry OS will not receive this application due to technical problems, regardless the major reason why BlackBerry’s older OS are getting all the attention all of a sudden lies in their registration rates, as it turns out almost 15 thousand registrations are made through BlackBerry Smartphones per day, whic leads to an estimate 175 million users (globally) that are using Viber as their VoIP across all major platforms. This also means Viber has become one of the most successful VoIP of all time and are soon catching up to Skype which currently holds the number 1 VoIP spot, but if things keep going the way they have, it won’t be long before Viber dethrones Skype as the leading VoIP on mobile platforms. Also keep in mind Viber has a technical advantage over Skype as it can run silently without interrupting your daily work making it a better VoIP overall, so there is a high possibility that Skype will soon lose out to Viber unless they do something innovative.