Telkomsel is the leading operator of cellular telecommunications services in Indonesia by market share.Telkomsel provides GSM cellular services in Indonesia, through its own nationwide Dual band 900/1800 MHz GSM network, and internationally, through 238 international roaming partner in 147 countries (end of June 2005). Telkomsel has the largest network coverage of any of the cellular operators in Indonesia, providing network coverage to over 90% of Indonesia's population and is the only operator in Indonesia that covers all of the country's provinces, cities, and sub-counties ("kecamatan"). The company offers GSM Dual Band (900 & 1800), GPRS, Wi-Fi, and EDGE Technology.

The Subscriber Created Application portal known as mChoice^TM Soltura, (referred to as “freedom to explore” in Latin) architected & developed by hSenid Mobile is deployed at Telkomsel. This move is to create a paradigm shift in Mobile service creation as this revolutionary portal allows any subscriber, to create their own SMS/MMS based applications. This harnesses the power of social networking and community building amongst subscribers by creating a large number of interest groups around specific areas of interest inviting a wide spectrum of service providers who wish to deliver content on a channel that is accessible by all – SMS on the mobile phone.