CoreESIM strategically partners with Indonesia's premier Tier-1 mobile network operators to deliver optimal performance. Our service primarily leverages the infrastructure of Telkomsel and XL Axiata. Telkomsel is widely recognized for its expansive 4G/LTE coverage across the archipelago, including more remote regions, making it a crucial backbone for dependable connectivity. XL Axiata provides strong urban and suburban coverage, complementing Telkomsel's reach and ensuring robust data speeds for CoreESIM users.
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Which Indonesian mobile networks does CoreESIM utilize?
Updated April 22, 2026
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