Telkomsel is the leading operator of cellular telecommunications services in Indonesia by market share and revenue share. By the end of March 2009, Telkomsel had 72.1 million customers which based on industry statistics represented an estimated market share of approximately 50%.

Telkomsel provides cellular services in Indonesia, through its own nationwide dual-band GSM 900-1800 MHz, 3G network, and internationally, through 341 international roaming partners in 180 countries (end of March 2009). In September 2006, Telkomsel became the first operator in Indonesia to launch 3G services. The company provides its subscribers with the choice between two prepaid cards-simPATI and Kartu As, or the post-paid kartuHALO service, as well as a variety of value-added services and programs. On March 20, 2009, Telkomsel and Apple South Asia Pte. Ltd. launched iPhone 3G in Indonesia with customized price plans for all Telkomsel’s valuable customers.

Telkomsel’s operations in Indonesia have grown substantially since the commercial launch of its post-paid services on May 26, 1995. In November 1997, Telkomsel became the first cellular telecommunications operator in Asia to introduce rechargeable GSM pre-paid services.

Telkomsel’s gross revenues have grown from Rp 3.59 trillion in 2000 to Rp 44.42 trillion in 2008. Over the same period, the total number of Telkomsel’s cellular subscribers increased from approximately 1.7 million as at 31 December 2000 to 65.3 million as at 31 December 2008.

Telkomsel has the largest network coverage of any of the cellular operators in Indonesia, providing network coverage reaching over 95% of Indonesia’s population and is the only operator in Indonesia that covers all of the country’s provinces and regencies, and all counties (“kecamatan”) in Sumatra, Java, and Bali/Nusra. The company offers GSM Dual Band (900 & 1800), GPRS, Wi-Fi, EDGE, and 3G Technology.