Vopium's economic foundation is now secured so that the company can keep expanding internationally. The Indian investor, Raghuvinder Kataria, has with his own investment company invested $16.5 million in the Danish company and he now owns the majority of the shares in Vopium.

Vopium was established in Copenhagen by a group of people spearheaded by Tanveer Sharif. It was originally intended for immigrants who were looking for cheap telephony solutions to get in contact with family and friends in distant countries. This target group has since been expanded to all people and companies who want to make cheap international phone calls. With a software program installed on their mobile phone, users can make very cheap calls, e.g. from Denmark to the US for only $ 0,02 per minute, and with the same quality as that provided by traditional phone companies. One million users have already installed Vopium on their mobile phone and 250,000 users in 49 countries are using the solution.

With Vopium, the users do not have to change their phone company or be located at the computer to save on expensive phone calls. Besides international calls and texts, Vopium offers its users free calls to each other and the ability to communicate with friends on Skype, GTalk, MSN, Twitter, Facebook, etc, directly from their mobile phone.

Raghuvinder Kataria was one of the early investors in Bharti Tele-Ventures, together with Sunil Bharti Mittal. Today the company is called Bharti Airtel and is one of the world's largest mobile companies.