How to get the user's country calling code in iOS?

Question

I am developing an iOS app in which the user enters their mobile number. How do I get their country calling code? For example, if a user is in India, then +91 s

Answer 1

Swift

   let networkInfo = CTTelephonyNetworkInfo()

    if let carrier = networkInfo.subscriberCellularProvider {
        print("country code is: " + carrier.mobileCountryCode!);

        //will return the actual country code
        print("ISO country code is: " + carrier.isoCountryCode!);
    }