A former portfolio company of SAIF, WiderThan is a global Wireless Value-Added Service and mobile Internet solutions developer based in Seoul, Korea. Established in 2000 by senior executives of SK Telecom ("SKT") and with funding from SKT, the company has grown to introduce innovative products and services for the global wireless telecom industry. The company enabled SKT to become the first cellular operator in the world to commercialize the Ring Back Tone ("RBT") service, which the company has since introduced to many countries such as the Philippines, India and the U.S.