How can I get the country (or its ISO code)?

Question

What is the best way to get the country code?

As of now, I know two ways. One is to get by TelephonyManager and another by Locale. Which is another best and unique wa

Answer 1

There is an excellent article by Reto Meier: http://android-developers.blogspot.com/2011/06/deep-dive-into-location.html

It describes different techniques to get the location of an Android device, including source code.

Next, when you have the location, it's easy to get the country for it - you can use an online web-service or offline database.

Answer 2

Try this:

TelephonyManager tm = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
String countryCode = tm.getSimCountryIso();

Answer 3

Here is a complete example. Try to get country code from TelephonyManager (from a SIM card or CDMA devices), and if not available, try to get it from the local configuration.

private static String getDeviceCountryCode(Context context) {
    String countryCode;

    // Try to get the country code from the TelephonyManager service
    TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    if(tm != null) {
        // Query first getSimCountryIso()
        countryCode = tm.getSimCountryIso();
        if (countryCode != null && countryCode.length() == 2)
            return countryCode.toLowerCase();

        if (tm.getPhoneType() == TelephonyManager.PHONE_TYPE_CDMA) {
            // Special case for CDMA devices
            countryCode = getCDMACountryIso();
        } else {
            // For 3G devices (with a SIM card), query getNetworkCountryIso()
            countryCode = tm.getNetworkCountryIso();
        }

        if (countryCode != null && countryCode.length() == 2)
            return countryCode.toLowerCase();
    }

    // If the network country is not available (tablets maybe), get the country code from the Locale class
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
        countryCode = context.getResources().getConfiguration().getLocales().get(0).getCountry();
    } else {
        countryCode = context.getResources().getConfiguration().locale.getCountry();
    }

    if (countryCode != null && countryCode.length() == 2)
        return  countryCode.toLowerCase();

    // General fallback to "us"
    return "us";
}

@SuppressLint("PrivateApi")
private static String getCDMACountryIso() {
    try {
        // Try to get country code from SystemProperties private class
        Class<?> systemProperties = Class.forName("android.os.SystemProperties");
        Method get = systemProperties.getMethod("get", String.class);

        // Get homeOperator that contain MCC + MNC
        String homeOperator = ((String) get.invoke(systemProperties,
                "ro.cdma.home.operator.numeric"));

        // First three characters (MCC) from homeOperator represents the country code
        int mcc = Integer.parseInt(homeOperator.substring(0, 3));

        // Mapping just countries that actually use CDMA networks
        switch (mcc) {
            case 330: return "PR";
            case 310: return "US";
            case 311: return "US";
            case 312: return "US";
            case 316: return "US";
            case 283: return "AM";
            case 460: return "CN";
            case 455: return "MO";
            case 414: return "MM";
            case 619: return "SL";
            case 450: return "KR";
            case 634: return "SD";
            case 434: return "UZ";
            case 232: return "AT";
            case 204: return "NL";
            case 262: return "DE";
            case 247: return "LV";
            case 255: return "UA";
        }
    }
    catch (ClassNotFoundException ignored) {
    }
    catch (NoSuchMethodException ignored) {
    }
    catch (IllegalAccessException ignored) {
    }
    catch (InvocationTargetException ignored) {
    }
    catch (NullPointerException ignored) {
    }

    return null;
}

Also another idea is to try an API request like in this answer, or to use fine location.

References are here and here.