Navigate to Settings > Cellular to view your active plans. To do this, press and hold either volume button and the side button until the power off slider appears.
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The eSIM is a digital profile that allows you to activate a cellular plan without a physical card. Verify that your carrier account is active and in good standing.
Carrier settings updates are released periodically to maintain compatibility with network infrastructure, and failing to install them can result in recognition errors. Hardware Failure and Professional Repair.
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Digital SIM and eSIM Considerations For users of newer iPhone models that support dual SIM functionality, the "No SIM" warning might refer to the embedded electronic SIM (eSIM) rather than the physical nano-SIM. Initial Checks and Physical Verification The most common reason for an iPhone to display a "No SIM" message is a physical disconnection or incorrect installation of the card.
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