Vopium

Vopium is a leading innovator in mobile global communications. Through our technology, we enable mobile phone users to make international calls at the reduced price and exceptional sound quality of a local phone call — with or without the need of a WiFi or 3G connection.
Vopium's free to download, award winning mobile app is currently available on Apple iPhone, Android, BlackBerry, Nokia Symbian, Windows Mobile and Java devices - over 900 types of mobile phones.