Voice over Internet Protocol (VoIP) calling is most convenient when using a mobile phone. BlackBerry users have plenty of choices when it comes to picking a VoIP app that is compatible with their phones so that they can take the convenience of VoIP calling with them anywhere.
Mabrook Voip is a company established in 2009 with 1 customer for a month and now holding hands together with 300 partners from different part of the World.