diff --git a/src/com/android/settings/network/telephony/MobileNetworkUtils.java b/src/com/android/settings/network/telephony/MobileNetworkUtils.java
index b43cd3a..f397382 100644
--- a/src/com/android/settings/network/telephony/MobileNetworkUtils.java
+++ b/src/com/android/settings/network/telephony/MobileNetworkUtils.java
@@ -30,7 +30,6 @@
 import android.telecom.PhoneAccountHandle;
 import android.telecom.TelecomManager;
 import android.telephony.CarrierConfigManager;
-import android.telephony.ServiceState;
 import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
 import android.telephony.TelephonyManager;
@@ -213,11 +212,6 @@
                 || (!esimIgnoredDevice && enabledEsimUiByDefault && inEsimSupportedCountries));
     }
 
-    public static PersistableBundle getCarrierConfigBySubId(int mSubId) {
-        //TODO(b/114749736): get carrier config from subId
-        return new PersistableBundle();
-    }
-
     /**
      * Set whether to enable data for {@code subId}, also whether to disable data for other
      * subscription
@@ -253,9 +247,17 @@
         }
         final TelephonyManager telephonyManager = TelephonyManager.from(context)
                 .createForSubscriptionId(subId);
+        final PersistableBundle carrierConfig = context.getSystemService(
+                CarrierConfigManager.class).getConfigForSubId(subId);
+
 
         if (telephonyManager.getPhoneType() == PhoneConstants.PHONE_TYPE_CDMA) {
             return true;
+        } else if (carrierConfig != null
+                && !carrierConfig.getBoolean(
+                CarrierConfigManager.KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL)
+                && carrierConfig.getBoolean(CarrierConfigManager.KEY_WORLD_PHONE_BOOL)) {
+            return true;
         }
 
         if (isWorldMode(context, subId)) {
@@ -312,7 +314,10 @@
 
         if (telephonyManager.getPhoneType() == PhoneConstants.PHONE_TYPE_GSM) {
             return true;
-        } else if (carrierConfig.getBoolean(CarrierConfigManager.KEY_WORLD_PHONE_BOOL)) {
+        } else if (carrierConfig != null
+                && !carrierConfig.getBoolean(
+                CarrierConfigManager.KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL)
+                && carrierConfig.getBoolean(CarrierConfigManager.KEY_WORLD_PHONE_BOOL)) {
             return true;
         }
 
diff --git a/src/com/android/settings/network/telephony/cdma/CdmaSystemSelectPreferenceController.java b/src/com/android/settings/network/telephony/cdma/CdmaSystemSelectPreferenceController.java
index 4119c64..5f259f8 100644
--- a/src/com/android/settings/network/telephony/cdma/CdmaSystemSelectPreferenceController.java
+++ b/src/com/android/settings/network/telephony/cdma/CdmaSystemSelectPreferenceController.java
@@ -23,6 +23,8 @@
 import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 
+import com.android.internal.telephony.Phone;
+
 /**
  * Preference controller for "System Select"
  */
@@ -47,6 +49,12 @@
                 resetCdmaRoamingModeToDefault();
             }
         }
+        final int settingsNetworkMode = Settings.Global.getInt(
+                mContext.getContentResolver(),
+                Settings.Global.PREFERRED_NETWORK_MODE + mSubId,
+                Phone.PREFERRED_NT_MODE);
+        listPreference.setEnabled(
+                settingsNetworkMode != TelephonyManager.NETWORK_MODE_LTE_GSM_WCDMA);
     }
 
     @Override
diff --git a/tests/robotests/src/com/android/settings/network/telephony/MobileNetworkUtilsTest.java b/tests/robotests/src/com/android/settings/network/telephony/MobileNetworkUtilsTest.java
index c03fb71..676c9f4 100644
--- a/tests/robotests/src/com/android/settings/network/telephony/MobileNetworkUtilsTest.java
+++ b/tests/robotests/src/com/android/settings/network/telephony/MobileNetworkUtilsTest.java
@@ -21,18 +21,20 @@
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.nullable;
-import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
 
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
+import android.os.PersistableBundle;
 import android.provider.Settings;
 import android.telecom.PhoneAccountHandle;
+import android.telephony.CarrierConfigManager;
 import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
 import android.telephony.TelephonyManager;
@@ -75,27 +77,35 @@
     private ComponentName mComponentName;
     @Mock
     private ResolveInfo mResolveInfo;
+    @Mock
+    private CarrierConfigManager mCarrierConfigManager;
 
     private Context mContext;
+    private PersistableBundle mCarrierConfig;
 
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
 
         mContext = spy(RuntimeEnvironment.application);
-        doReturn(mSubscriptionManager).when(mContext).getSystemService(SubscriptionManager.class);
-        doReturn(mTelephonyManager).when(mContext).getSystemService(Context.TELEPHONY_SERVICE);
-        doReturn(mTelephonyManager).when(mTelephonyManager).createForSubscriptionId(SUB_ID_1);
-        doReturn(mTelephonyManager2).when(mTelephonyManager).createForSubscriptionId(SUB_ID_2);
-        doReturn(mPackageManager).when(mContext).getPackageManager();
-        doReturn(mComponentName).when(mPhoneAccountHandle).getComponentName();
-        doReturn(PACKAGE_NAME).when(mComponentName).getPackageName();
+        when(mContext.getSystemService(SubscriptionManager.class)).thenReturn(mSubscriptionManager);
+        when(mContext.getSystemService(Context.TELEPHONY_SERVICE)).thenReturn(mTelephonyManager);
+        when(mTelephonyManager.createForSubscriptionId(SUB_ID_1)).thenReturn(mTelephonyManager);
+        when(mTelephonyManager.createForSubscriptionId(SUB_ID_2)).thenReturn(mTelephonyManager2);
+        when(mContext.getPackageManager()).thenReturn(mPackageManager);
+        when(mPhoneAccountHandle.getComponentName()).thenReturn(mComponentName);
+        when(mComponentName.getPackageName()).thenReturn(PACKAGE_NAME);
+        when(mContext.getSystemService(CarrierConfigManager.class)).thenReturn(
+                mCarrierConfigManager);
 
-        doReturn(SUB_ID_1).when(mSubscriptionInfo1).getSubscriptionId();
-        doReturn(SUB_ID_2).when(mSubscriptionInfo2).getSubscriptionId();
+        mCarrierConfig = new PersistableBundle();
+        when(mCarrierConfigManager.getConfigForSubId(SUB_ID_1)).thenReturn(mCarrierConfig);
 
-        doReturn(Arrays.asList(mSubscriptionInfo1, mSubscriptionInfo2)).when(
-                mSubscriptionManager).getActiveSubscriptionInfoList();
+        when(mSubscriptionInfo1.getSubscriptionId()).thenReturn(SUB_ID_1);
+        when(mSubscriptionInfo2.getSubscriptionId()).thenReturn(SUB_ID_2);
+
+        when(mSubscriptionManager.getActiveSubscriptionInfoList()).thenReturn(
+                Arrays.asList(mSubscriptionInfo1, mSubscriptionInfo2));
     }
 
     @Test
@@ -129,8 +139,8 @@
 
     @Test
     public void buildConfigureIntent_noActivityHandleIntent_returnNull() {
-        doReturn(new ArrayList<ResolveInfo>()).when(mPackageManager).queryIntentActivities(
-                nullable(Intent.class), anyInt());
+        when(mPackageManager.queryIntentActivities(nullable(Intent.class), anyInt()))
+                .thenReturn(new ArrayList<>());
 
         assertThat(MobileNetworkUtils.buildPhoneAccountConfigureIntent(mContext,
                 mPhoneAccountHandle)).isNull();
@@ -138,8 +148,8 @@
 
     @Test
     public void buildConfigureIntent_hasActivityHandleIntent_returnIntent() {
-        doReturn(Arrays.asList(mResolveInfo)).when(mPackageManager).queryIntentActivities(
-                nullable(Intent.class), anyInt());
+        when(mPackageManager.queryIntentActivities(nullable(Intent.class), anyInt()))
+                .thenReturn(Arrays.asList(mResolveInfo));
 
         assertThat(MobileNetworkUtils.buildPhoneAccountConfigureIntent(mContext,
                 mPhoneAccountHandle)).isNotNull();
@@ -147,19 +157,29 @@
 
     @Test
     public void isCdmaOptions_phoneTypeCdma_returnTrue() {
-        doReturn(PhoneConstants.PHONE_TYPE_CDMA).when(mTelephonyManager).getPhoneType();
+        when(mTelephonyManager.getPhoneType()).thenReturn(PhoneConstants.PHONE_TYPE_CDMA);
 
         assertThat(MobileNetworkUtils.isCdmaOptions(mContext, SUB_ID_1)).isTrue();
     }
 
     @Test
     public void isCdmaOptions_worldModeWithGsmWcdma_returnTrue() {
-        doReturn(PhoneConstants.PHONE_TYPE_GSM).when(mTelephonyManager).getPhoneType();
-        doReturn("true").when(mContext).getString(R.string.config_world_mode);
+        when(mTelephonyManager.getPhoneType()).thenReturn(PhoneConstants.PHONE_TYPE_GSM);
+        when(mContext.getString(R.string.config_world_mode)).thenReturn("true");
         Settings.Global.putInt(mContext.getContentResolver(),
                 android.provider.Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID_1,
                 TelephonyManager.NETWORK_MODE_LTE_GSM_WCDMA);
 
         assertThat(MobileNetworkUtils.isCdmaOptions(mContext, SUB_ID_1)).isTrue();
     }
+
+    @Test
+    public void isCdmaOptions_carrierWorldModeWithoutHideCarrier_returnTrue() {
+        when(mTelephonyManager.getPhoneType()).thenReturn(PhoneConstants.PHONE_TYPE_GSM);
+        mCarrierConfig.putBoolean(CarrierConfigManager.KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL,
+                false);
+        mCarrierConfig.putBoolean(CarrierConfigManager.KEY_WORLD_PHONE_BOOL, true);
+
+        assertThat(MobileNetworkUtils.isCdmaOptions(mContext, SUB_ID_1)).isTrue();
+    }
 }
diff --git a/tests/robotests/src/com/android/settings/network/telephony/cdma/CdmaSubscriptionPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/network/telephony/cdma/CdmaSubscriptionPreferenceControllerTest.java
index c938948..4044b6c 100644
--- a/tests/robotests/src/com/android/settings/network/telephony/cdma/CdmaSubscriptionPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/network/telephony/cdma/CdmaSubscriptionPreferenceControllerTest.java
@@ -21,10 +21,13 @@
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
 
 import android.content.Context;
+import android.os.PersistableBundle;
 import android.os.SystemProperties;
 import android.provider.Settings;
+import android.telephony.CarrierConfigManager;
 import android.telephony.SubscriptionManager;
 import android.telephony.TelephonyManager;
 
@@ -53,9 +56,12 @@
     private TelephonyManager mInvalidTelephonyManager;
     @Mock
     private SubscriptionManager mSubscriptionManager;
+    @Mock
+    private CarrierConfigManager mCarrierConfigManager;
 
     private CdmaSubscriptionPreferenceController mController;
     private ListPreference mPreference;
+    private PersistableBundle mCarrierConfig;
     private Context mContext;
 
     @Before
@@ -68,6 +74,10 @@
         doReturn(mTelephonyManager).when(mTelephonyManager).createForSubscriptionId(SUB_ID);
         doReturn(mInvalidTelephonyManager).when(mTelephonyManager).createForSubscriptionId(
                 SubscriptionManager.INVALID_SUBSCRIPTION_ID);
+        doReturn(mCarrierConfigManager).when(mContext).getSystemService(CarrierConfigManager.class);
+
+        mCarrierConfig = new PersistableBundle();
+        when(mCarrierConfigManager.getConfigForSubId(SUB_ID)).thenReturn(mCarrierConfig);
 
         mPreference = new ListPreference(mContext);
         mController = new CdmaSubscriptionPreferenceController(mContext, "mobile_data");
diff --git a/tests/robotests/src/com/android/settings/network/telephony/cdma/CdmaSystemSelectPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/network/telephony/cdma/CdmaSystemSelectPreferenceControllerTest.java
index 2046237..f00afc9 100644
--- a/tests/robotests/src/com/android/settings/network/telephony/cdma/CdmaSystemSelectPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/network/telephony/cdma/CdmaSystemSelectPreferenceControllerTest.java
@@ -21,9 +21,12 @@
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
 
 import android.content.Context;
+import android.os.PersistableBundle;
 import android.provider.Settings;
+import android.telephony.CarrierConfigManager;
 import android.telephony.SubscriptionManager;
 import android.telephony.TelephonyManager;
 
@@ -51,9 +54,12 @@
     private TelephonyManager mInvalidTelephonyManager;
     @Mock
     private SubscriptionManager mSubscriptionManager;
+    @Mock
+    private CarrierConfigManager mCarrierConfigManager;
 
     private CdmaSystemSelectPreferenceController mController;
     private ListPreference mPreference;
+    private PersistableBundle mCarrierConfig;
     private Context mContext;
 
     @Before
@@ -67,6 +73,12 @@
         doReturn(mInvalidTelephonyManager).when(mTelephonyManager).createForSubscriptionId(
                 SubscriptionManager.INVALID_SUBSCRIPTION_ID);
 
+        doReturn(mCarrierConfigManager).when(mContext).getSystemService(CarrierConfigManager.class);
+
+        mCarrierConfig = new PersistableBundle();
+        when(mCarrierConfigManager.getConfigForSubId(SUB_ID)).thenReturn(mCarrierConfig);
+
+
         mPreference = new ListPreference(mContext);
         mController = new CdmaSystemSelectPreferenceController(mContext, "mobile_data");
         mController.init(mPreferenceManager, SUB_ID);
@@ -102,6 +114,20 @@
     }
 
     @Test
+    public void updateState_LteGSMWcdma_disabled() {
+        doReturn(TelephonyManager.CDMA_ROAMING_MODE_HOME).when(
+                mTelephonyManager).getCdmaRoamingMode();
+        Settings.Global.putInt(mContext.getContentResolver(),
+                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
+                TelephonyManager.NETWORK_MODE_LTE_GSM_WCDMA);
+
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.isEnabled()).isFalse();
+    }
+
+
+    @Test
     public void updateState_stateOther_resetToDefault() {
         Settings.Global.putInt(mContext.getContentResolver(),
                 Settings.Global.CDMA_ROAMING_MODE,