The SIM initiates commands independently of the handset and the network, giving it a proactive role for the first time. About Mobistar Mobistar launched the second GSM-900 mobile phone network in Belgium in August 1996, directly covering 97 percent of the Belgian population. At the end of 1998, Mobistar had 510,000 customers. The introduction of a SIM Toolkit application for direct and easy access to the existing Mobistar complementary services is a new initiative towards easy and widespread mobile telephony service. Since 1998 Mobistar offers also fixed telephony services.
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