To ensure compatibility with any CoreESIM, your mobile device must be 'carrier-unlocked'. Devices purchased directly from a mobile network operator (e.g., Verizon, AT&T, O2) under a contract are frequently locked to that specific carrier. It is imperative to verify your device's unlocked status with your home provider before purchasing a CoreESIM. An unlocked device is a fundamental prerequisite for successful eSIM provisioning and network access.
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My device is carrier-locked. Can I still utilize this CoreESIM?
Updated April 22, 2026
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