T Telkomsel

Telkomsel is the leading operator of cellular telecommunications services in Indonesia by market share and revenue share. By the end of December 2016, Telkomsel had 160 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 442 international roaming partners in 200 countries. In December 2014, Telkomsel became the first operator in Indonesia to launch commercial mobile 4G LTE services. 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 has the largest network coverage of any of the cellular operators in Indonesia, providing network coverage reaching all 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, 3G Technology, and 4G LTE.