TELKOMSEL

Telkomsel is The Largest carrier in The Country with 163 million customer base as of 2018. The company operates their GSM network on the 900 – 800 MHZ frequency range, as well 3G and 4G services on other frequencies. Telkomsel operates a variety of simcard brands, chief among them are simPATi and kartuHALO. These brands differ on their payment model ( prepaid vs. post-paid) as well pricing. As of 31 March 2015, Telkomsel has 46% of Indonesian wireless service market share.