Java tutorial
//package com.java2s; import android.content.Context; import android.support.annotation.Nullable; import android.telephony.TelephonyManager; public class Main { /** * Returns the ISO code of the current country * @param context Context in which the application is running * @return the ISO code of the current country, or null if not found */ @Nullable public static String getCountryIso(Context context) { if (context != null) { TelephonyManager telephonyManager = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); if (telephonyManager != null) return telephonyManager.getNetworkCountryIso().toLowerCase(); } return null; } }