Vopium allows you to save 40-90% when making international calls or sending SMS from your mobile and now ENJOY 15 FREE MINUTES of international calls when you signup.You don't need to change your current operator or SIM-card as well. You pay your mobile provider for a local call and Vopium for the international add-on. It only takes a few minutes to register at Vopium. You just download the Vopium software, which takes the same time as downloading a new ring tone. Install the Vopium software.