React Native Firebase
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    VerificationSupportStatus:
        | "CAPABILITY_STATUS_UNSPECIFIED"
        | "CAPABLE"
        | "INCAPABLE_DUE_TO_CARRIER_UNSUPPORTED"
        | "INCAPABLE_DUE_TO_ANDROID_VERSION"
        | "INCAPABLE_DUE_TO_SIM_STATE"

    Status indicating why a SIM slot does or does not support phone number verification. Maps to the native VerificationSupportStatus IntDef constants.

    Returned as the VerificationSupportResult.reason field. Use this to determine whether to fall back to an alternative verification method (e.g. SMS).