Roger Sole Rafols

Chung joins Sprint from LG Electronics where he served as a senior vice president, managing the account division for major U.S. operators. Previously he worked at McKinsey and Company Inc. and also held management positions at Hewlett Packard/Agilent Technologies. Chung earned his bachelor's degree at U.C. Berkeley in Computer Science and earned his master's degree at Stanford University in Computer Science. He also holds an MBA from the University of Pennsylvania at Wharton.

Millicom International Cellular SA is an international telecommunications and media company. It offers a wide range of digital services to more than 63 million customers primarily under the Tigo brand in fourteen markets in Africa and Latin America. Its online partnerships are active in more than 40 markets.

TIM Participações S.A. is a holding company, which renders nationwide telecommunications services through its subsidiaries, TIM Celular S.A. and Intelig Telecomunicações LTDA. The Company started its operations in Brazil in 1998 and became consolidated as a national company as of 2002, becoming the first mobile operator to be present in all Brazilian states. TIM operates as a mobile, fixed, long-distance and data transmission operator, always focused on the quality of services rendered to its customers. Through GSM technology, TIM has a national range of approximately 95% of the urban population, being the largest GSM coverage in Brazil, with presence in 3,383 cities. TIM also relies on an extensive data coverage throughout the country, being 100% GPRS, 94% with EDGE, in addition to having a sophisticated Third Generation (3G) network available to over 72% of the Brazilian urban population. The Company also has international roaming agreements for TIM customers, more than 450 networks are available in over 208 countries on six continents. TIM brand has a strong association with innovation and quality attributes. During its presence in the country, it has become the pioneer in launching several products and services, such as the introduction of MMS and Blackberry in Brazil. Continuing this trend, the Company added to its portfolio, in 2010, new and innovating offerings, always seeking to keep the positioning as the operators that makes “Plans and Promotions that Revolutionize”. TIM has evolved its two families of plans – ‘Infinity’ e ‘Liberty’ – by launching the offerings ‘Infinity Web’ and ‘Liberty Web’ in order to meet the growing demand for data services. Furthermore, it has also introduced the pay per call concept for calls to fixed numbers through ‘Infinity Mais’ offering. The portfolio is based on an innovating concept, with great incentive to usage (tariffs per call, unlimited use) and always exploiting TIM’s community sense, with over 70 million lines throughout the country. TIM Participações is a subsidiary of TIM Brasil Serviços e Participações S.A., a Telecom Itália group company. Innovation and quality are two of the strategic pillars TIM shares with its parent company. For this, TIM substantially invests in network and IT, and maintains synergies with its controlling group through the sharing of experience and the adoption of best practices, always ensuring innovative experiences to all of its clients. During 2010, the Company continued with the integration process with Intelig, which was merged in December 2009. The latter operates as a fixed, long-distance and data transmission provider in Brazil. The merger expanded TIM network infrastructure, so that it was possible to speed up 3G network development, optimize leased line costs, and also improve our competitive positioning in the telephony market. In 2011, TIM Celular acquired 100% of Eletropaulo Telecomunicações Ltda. and 98.3% of AES Communications Rio de Janeiro S.A., later renamed TIM Fiber SP Ltda. and TIM Fiber RJ S.A., respectively. The acquisition represents a significant expansion of infrastructure, adding a fiber optic network with more than 5,500 km in 21 cities of the metropolitan regions of Rio de Janeiro and São Paulo. TIM Participações is a publicly-held company, whose shares are listed on the São Paulo Stock Exchange (BM&FBOVESPA) and ADRs (American Depositary Receipts) are listed on the New York Stock Exchange (NYSE). It is also one of the select group of companies included in the Corporate Sustainability Index (ISE) of BM&FBOVESPA. In August 2011 TIM became the only telecom operator in the highest level of Corporate Governance of Bovespa, called Novo Mercado.