How can I get a user's country location?

Question

Due to GDPR, I am requiring to check the user's location - whether the user is from the European Union. Till now I have found these solutions -

1. Get Country using the Phone's language configuration (can misguide if the user uses English US version even though he might be from some other country).

    String locale = context.getResources().getConfiguration().locale.getCountry();
   

2. Get Location using the GPS (requires the location coarse permission which I do not want to add especially because of Android 6.0+ runtime permissions).

    private void getCountryCode(final Location location) {
        Helper.log(TAG, "getCountryCode");
   
        AsyncTask<Void, Void, String> countryCodeTask = new AsyncTask<Void, Void, String>() {
   
            final float latitude = (float) location.getLatitude();
            final float longitude = (float) location.getLongitude();
            // Helper.log(TAG, "latitude: " + latitude);
            List<Address> addresses = null;
            Geocoder gcd = new Geocoder(mContext);
            String code = null;
   
            @Override
            protected String doInBackground(Void... params) {
                try {
                    addresses = gcd.getFromLocation(latitude, longitude, 1);
                    code = addresses.get(0).getCountryCode();
                } 
                catch (IOException e) {
                    e.printStackTrace();
                }
                return code;
            }
   
            @Override
            protected void onPostExecute(String code) {
                Helper.log(TAG, "onPostExecute");
                mCountryCodeListener.returnCountryCode(code);
            }
        };
   
        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.GINGERBREAD_MR1) {
            countryCodeTask.execute();
        }
        else {
            countryCodeTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
        }
    }
   

3. Get Location using the SIM card or Wi-Fi (can not be used on tables without SIM card or Wi-Fi, whereas my app can be used on the device without an Internet connection or Wi-Fi).

    TelephonyManager tm = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVICE);
    String countryCodeValue = tm.getNetworkCountryIso();
   

Is it possible to find out the location of the user if the user is from European Union region or not?

I do not need the exact location and even the country will work.

Is there another method which might also require location permission (not the coarse location permission will also be helpful)?

_{Please note that this question is not a duplicate of any other question as my case is not being solved by any other question.}

Answer 1

You can check if user is in the EU by requesting the URL http://adservice.google.com/getconfig/pubvendors. It gives you an answer like this:

{"is_request_in_eea_or_unknown":true}

Somewhere I've read that it is the way the Android consent SDK works.