IN the past, no firms were eyeing them. Today, as cellular phone service providers are entering a new era of competition, low-level consumers are being seriously addressed. Telkomsel launched its prepaid service called Kartu As (ace card) about three months back. Not long ago, Excelcomindo introduced Kartu Jempol (thumb card).

Indosat has not issued new brands as it already has two types of prepaid service, Mentari and IM3. What Indosa