The modern way of communication has changed a lot over the period of time. With the advancement in app technology, new and new apps are coming into the market and the competition is becoming more and more intense. Viber is rated among the best voice calling and messaging app out there use by around 10 million smartphone users around the globe. You can easily and precisely perform high-quality phone calls with the help of this app. Some of the users of Viber app has to face vulnerabilities over the period of time as the app is not perfectly tested out through comprehensive mobile apps testing measures. Hiring a software testing company can really help to assure the quality of this app on all available devices and platforms. Viber app possesses the following features.