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Editorial Team
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Asked: 2026-06-03T07:27:21+00:00

I am using the answer in this topic. iPhone – how to determine carrier

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I am using the answer in this topic. iPhone – how to determine carrier of the device (AT&T, Verizon, etc?) which is the same as getting operator details in iphone. Although it works fine when using a sim card, the returned carrier name if there is no SIM card is the old carrier name. It doesn’t detect that the SIM is removed.

I know this contradicts with Apple documentation that if there is no carrier, CTCarrier object shall be nil. But in my app I logged the carrier info and it gives me the latest carrier name although no sim is installed.

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1 Answer

  1. Editorial Team

    According to the documentation for [CTCarrier carrierName]:

    If you configure a device for a carrier and then remove the SIM card,
    this property retains the name of the carrier.

    As far as I know, you cannot detect if the SIM card is installed. You can only determine if a WWAN connection is available using Reachability.

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