Viber is a fresh, new, and easy-to-use take on VoIP calling from your Android device. It allows you to call and text anyone free and clear anywhere on the globe as long as you both have the Viber app and a data or Wi-Fi connection. With more than 40 million users on both Android and iPhone, Viber remains completely free and without advertising. While VoIP from a mobile device is not a new concept and is a crowded field to be in, Viber is still able to stand out. This is because of its design, implementation, and the fact that you just can’t beat free.