diff --git a/src/com/android/settings/applications/appinfo/AppLocaleDetails.java b/src/com/android/settings/applications/appinfo/AppLocaleDetails.java
index 7fd43c2..aee360e 100644
--- a/src/com/android/settings/applications/appinfo/AppLocaleDetails.java
+++ b/src/com/android/settings/applications/appinfo/AppLocaleDetails.java
@@ -37,6 +37,8 @@
 import androidx.preference.Preference;
 import androidx.preference.PreferenceGroup;
 
+import com.android.internal.app.LocalePicker;
+import com.android.internal.app.LocalePicker.LocaleInfo;
 import com.android.settings.R;
 import com.android.settings.Utils;
 import com.android.settings.applications.AppInfoBase;
@@ -45,8 +47,11 @@
 import com.android.settingslib.widget.LayoutPreference;
 import com.android.settingslib.widget.RadioButtonPreference;
 
+import com.google.common.collect.Iterables;
+
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.List;
 import java.util.Locale;
 
 /**
@@ -200,8 +205,8 @@
         private TelephonyManager mTelephonyManager;
         private LocaleManager mLocaleManager;
 
-        private Collection<Locale> mSuggestedLocales = new ArrayList<>();;
-        private Collection<Locale> mSupportedLocales = new ArrayList<>();;
+        private Collection<Locale> mSuggestedLocales = new ArrayList<>();
+        private Collection<Locale> mSupportedLocales = new ArrayList<>();
 
         AppLocaleDetailsHelper(Context context, String packageName) {
             mContext = context;
@@ -230,25 +235,41 @@
         @VisibleForTesting
         void handleSuggestedLocales() {
             LocaleList currentSystemLocales = getCurrentSystemLocales();
-            Locale simLocale = mTelephonyManager.getSimLocale();
             Locale appLocale = getAppDefaultLocale(mContext, mPackageName);
+            String simCountry = mTelephonyManager.getSimCountryIso().toUpperCase(Locale.US);
+            String networkCountry = mTelephonyManager.getNetworkCountryIso().toUpperCase(Locale.US);
             // 1st locale in suggested languages group.
             if (appLocale != null) {
                 mSuggestedLocales.add(appLocale);
             }
             // 2nd locale in suggested languages group.
-            if (simLocale != null && !compareLocale(simLocale, appLocale)) {
-                mSuggestedLocales.add(simLocale);
+            final List<LocaleInfo> localeInfos = LocalePicker.getAllAssetLocales(mContext, false);
+            for (LocaleInfo localeInfo : localeInfos) {
+                Locale locale = localeInfo.getLocale();
+                String localeCountry = locale.getCountry().toUpperCase(Locale.US);
+                if (!compareLocale(locale, appLocale)
+                        && isCountrySuggestedLocale(localeCountry, simCountry, networkCountry)) {
+                    mSuggestedLocales.add(locale);
+                }
             }
             // Other locales in suggested languages group.
             for (int i = 0; i < currentSystemLocales.size(); i++) {
                 Locale locale = currentSystemLocales.get(i);
-                if (!compareLocale(locale, appLocale) && !compareLocale(locale, simLocale)) {
+                boolean isInSuggestedLocales = false;
+                for (int j = 0; j < mSuggestedLocales.size(); j++) {
+                    Locale suggestedLocale = Iterables.get(mSuggestedLocales, j);
+                    if (compareLocale(locale, suggestedLocale)) {
+                        isInSuggestedLocales = true;
+                        break;
+                    }
+                }
+                if (!isInSuggestedLocales) {
                     mSuggestedLocales.add(locale);
                 }
             }
         }
 
+        @VisibleForTesting
         static boolean compareLocale(Locale source, Locale target) {
             if (source == null && target == null) {
                 return true;
@@ -259,6 +280,13 @@
             }
         }
 
+        private static boolean isCountrySuggestedLocale(String localeCountry,
+                String simCountry,
+                String networkCountry) {
+            return ((!simCountry.isEmpty() && simCountry.equals(localeCountry))
+                    || (!networkCountry.isEmpty() && networkCountry.equals(localeCountry)));
+        }
+
         @VisibleForTesting
         void handleSupportedLocales() {
             //TODO Waiting for PackageManager api
diff --git a/tests/unit/src/com/android/settings/applications/appinfo/AppLocaleDetailsTest.java b/tests/unit/src/com/android/settings/applications/appinfo/AppLocaleDetailsTest.java
index e185354..1042a6a 100644
--- a/tests/unit/src/com/android/settings/applications/appinfo/AppLocaleDetailsTest.java
+++ b/tests/unit/src/com/android/settings/applications/appinfo/AppLocaleDetailsTest.java
@@ -53,7 +53,6 @@
 
     private Context mContext;
     private LocaleList mSystemLocales;
-    private Locale mSimLocale;
     private LocaleList mAppLocale;
     private String[] mAssetLocales;
 
@@ -69,7 +68,8 @@
         when(mContext.getSystemService(LocaleManager.class)).thenReturn(mLocaleManager);
 
         setupInitialLocales("en",
-                "uk",
+                "tw",
+                "jp",
                 "en, uk, jp, ne",
                 new String[]{"en", "ne", "ms", "pa"});
     }
@@ -88,6 +88,8 @@
     @Test
     @UiThreadTest
     public void handleAllLocalesData_1stLocaleOfSuggestedLocaleListIsAppLocale() {
+        Locale simCountryLocale = new Locale("zh", "TW");
+        Locale networkCountryLocale = new Locale("ja", "JP");
         DummyAppLocaleDetailsHelper helper =
                 new DummyAppLocaleDetailsHelper(mContext, APP_PACKAGE_NAME);
 
@@ -95,25 +97,17 @@
 
         Locale locale = Iterables.get(helper.getSuggestedLocales(), 0);
         assertTrue(locale.equals(mAppLocale.get(0)));
+        assertTrue(helper.getSuggestedLocales().contains(simCountryLocale));
+        assertTrue(helper.getSuggestedLocales().contains(networkCountryLocale));
     }
 
     @Test
     @UiThreadTest
-    public void handleAllLocalesData_2ndLocaleOfSuggestedLocaleListIsSimLocale() {
-        DummyAppLocaleDetailsHelper helper =
-                new DummyAppLocaleDetailsHelper(mContext, APP_PACKAGE_NAME);
-
-        helper.handleAllLocalesData();
-
-        Locale locale = Iterables.get(helper.getSuggestedLocales(), 1);
-        assertTrue(locale.equals(mSimLocale));
-    }
-
-    @Test
-    @UiThreadTest
-    public void handleAllLocalesData_withoutAppLocale_1stLocaleOfSuggestedLocaleListIsSimLocal() {
+    public void handleAllLocalesData_withoutAppLocale_1stSuggestedLocaleIsSimCountryLocale() {
+        Locale simCountryLocale = new Locale("zh", "TW");
         setupInitialLocales("",
-                "uk",
+                "tw",
+                "",
                 "en, uk, jp, ne",
                 new String[]{"en", "ne", "ms", "pa"});
         DummyAppLocaleDetailsHelper helper =
@@ -122,14 +116,35 @@
         helper.handleAllLocalesData();
 
         Locale locale = Iterables.get(helper.getSuggestedLocales(), 0);
-        assertTrue(locale.equals(mSimLocale));
+        assertTrue(locale.equals(simCountryLocale));
+        assertFalse(helper.getSuggestedLocales().contains(mAppLocale.get(0)));
     }
 
     @Test
     @UiThreadTest
-    public void handleAllLocalesData_noAppAndSimLocale_1stLocaleIsFirstOneInSystemLocales() {
+    public void handleAllLocalesData_withoutAppLocale_1stSuggestedLocaleIsNetworkCountryLocale() {
+        Locale networkCountryLocale = new Locale("en", "GB");
         setupInitialLocales("",
                 "",
+                "gb",
+                "en, uk, jp, ne",
+                new String[]{"en", "ne", "ms", "pa"});
+        DummyAppLocaleDetailsHelper helper =
+                new DummyAppLocaleDetailsHelper(mContext, APP_PACKAGE_NAME);
+
+        helper.handleAllLocalesData();
+
+        Locale locale = Iterables.get(helper.getSuggestedLocales(), 0);
+        assertTrue(locale.equals(networkCountryLocale));
+        assertFalse(helper.getSuggestedLocales().contains(mAppLocale.get(0)));
+    }
+
+    @Test
+    @UiThreadTest
+    public void handleAllLocalesData_noAppAndSimNetworkLocale_1stLocaleIsFirstOneInSystemLocales() {
+        setupInitialLocales("",
+                "",
+                "",
                 "en, uk, jp, ne",
                 new String[]{"en", "ne", "ms", "pa"});
         DummyAppLocaleDetailsHelper helper =
@@ -175,25 +190,34 @@
     /**
      * Sets the initial Locale data
      *
-     * @param appLocale     Application locale, it shall be a language tag.
-     *                      example: "en"
-     * @param simLocale     SIM carrier locale, it shall be a language tag.
-     *                      example: "en"
-     * @param systemLocales System locales, a locale list by a multiple language tags with comma.
-     *                      example: "en, uk, jp"
-     * @param assetLocales  Asset locales, a locale list by a multiple language tags with String
-     *                      array.
-     *                      example: new String[] {"en", "ne", "ms", "pa"}
+     * @param appLocale      Application locale, it shall be a language tag.
+     *                       example: "en"
+     *
+     * @param simCountry     The ISO-3166-1 alpha-2 country code equivalent for the SIM
+     *                       provider's country code.
+     *                       example: "us"
+     *
+     * @param networkCountry The ISO-3166-1 alpha-2 country code equivalent of the MCC
+     *                       (Mobile Country Code) of the current registered operato
+     *                       or the cell nearby.
+     *                       example: "us"
+     *
+     * @param systemLocales  System locales, a locale list by a multiple language tags with comma.
+     *                       example: "en, uk, jp"
+     * @param assetLocales   Asset locales, a locale list by a multiple language tags with String
+     *                       array.
+     *                       example: new String[] {"en", "ne", "ms", "pa"}
      */
     private void setupInitialLocales(String appLocale,
-            String simLocale,
+            String simCountry,
+            String networkCountry,
             String systemLocales,
             String[] assetLocales) {
         mAppLocale = LocaleList.forLanguageTags(appLocale);
-        mSimLocale = Locale.forLanguageTag(simLocale);
         mSystemLocales = LocaleList.forLanguageTags(systemLocales);
         mAssetLocales = assetLocales;
-        when(mTelephonyManager.getSimLocale()).thenReturn(simLocale.isEmpty() ? null : mSimLocale);
+        when(mTelephonyManager.getSimCountryIso()).thenReturn(simCountry);
+        when(mTelephonyManager.getNetworkCountryIso()).thenReturn(networkCountry);
         when(mLocaleManager.getApplicationLocales(anyString())).thenReturn(mAppLocale);
     }