diff --git a/res/xml/cdma_options.xml b/res/xml/cdma_options.xml
index c86787b..8a41f87 100644
--- a/res/xml/cdma_options.xml
+++ b/res/xml/cdma_options.xml
@@ -33,21 +33,23 @@
         android:entryValues="@array/cdma_subscription_values"
         android:dialogTitle="@string/cdma_subscription_dialogtitle" />
 
-    <PreferenceScreen
-        android:key="button_apn_key_cdma"
-        android:title="@string/apn_settings"
-        android:persistent="false">
-
+    <!--We want separate APN setting from reset of settings because-->
+    <!--we want user to change it with caution.-->
+    <PreferenceCategory
+        android:key="category_cdma_apn_key">
         <!-- The launching Intent will be defined thru code as we need to pass some Extra -->
+        <Preference
+            android:key="button_cdma_apn_key"
+            android:title="@string/apn_settings"
+            android:persistent="false"/>
+    </PreferenceCategory>
 
-    </PreferenceScreen>
-
-    <PreferenceScreen
+    <Preference
         android:key="carrier_settings_key"
         android:title="@string/carrier_settings_title">
         <intent android:action="android.intent.action.MAIN"
                 android:targetPackage="@string/carrier_settings"
                 android:targetClass="@string/carrier_settings_menu" />
-    </PreferenceScreen>
+    </Preference>
 
 </PreferenceScreen>
diff --git a/res/xml/gsm_umts_options.xml b/res/xml/gsm_umts_options.xml
index 3b054d6..e6ddc37 100644
--- a/res/xml/gsm_umts_options.xml
+++ b/res/xml/gsm_umts_options.xml
@@ -36,9 +36,9 @@
     <!--We want separate APN setting from reset of settings because-->
     <!--we want user to change it with caution.-->
     <PreferenceCategory
-        android:key="category_apn_key">
+        android:key="category_gsm_apn_key">
         <Preference
-            android:key="button_apn_key"
+            android:key="button_gsm_apn_key"
             android:title="@string/apn_settings"
             android:persistent="false" />
     </PreferenceCategory>
diff --git a/src/com/android/phone/CdmaOptions.java b/src/com/android/phone/CdmaOptions.java
index a760cda..8749565 100644
--- a/src/com/android/phone/CdmaOptions.java
+++ b/src/com/android/phone/CdmaOptions.java
@@ -27,7 +27,6 @@
 import android.text.TextUtils;
 
 import com.android.internal.telephony.Phone;
-import com.android.internal.telephony.TelephonyProperties;
 
 /**
  * List of Phone-specific settings screens.
@@ -37,12 +36,15 @@
 
     private CdmaSystemSelectListPreference mButtonCdmaSystemSelect;
     private CdmaSubscriptionListPreference mButtonCdmaSubscription;
-    private PreferenceScreen mButtonAPNExpand;
+    private Preference mButtonAPNExpand;
+    private Preference mCategoryAPNExpand;
+    private Preference mButtonCarrierSettings;
 
     private static final String BUTTON_CDMA_SYSTEM_SELECT_KEY = "cdma_system_select_key";
     private static final String BUTTON_CDMA_SUBSCRIPTION_KEY = "cdma_subscription_key";
     private static final String BUTTON_CARRIER_SETTINGS_KEY = "carrier_settings_key";
-    private static final String BUTTON_APN_EXPAND_KEY = "button_apn_key_cdma";
+    private static final String BUTTON_APN_EXPAND_KEY = "button_cdma_apn_key";
+    private static final String CATEGORY_APN_EXPAND_KEY = "category_cdma_apn_key";
 
     private PreferenceFragment mPrefFragment;
     private PreferenceScreen mPrefScreen;
@@ -51,24 +53,44 @@
     public CdmaOptions(PreferenceFragment prefFragment, PreferenceScreen prefScreen, Phone phone) {
         mPrefFragment = prefFragment;
         mPrefScreen = prefScreen;
-        mPhone = phone;
-        create();
-    }
-
-    protected void create() {
         mPrefFragment.addPreferencesFromResource(R.xml.cdma_options);
 
-        mButtonAPNExpand = (PreferenceScreen) mPrefScreen.findPreference(BUTTON_APN_EXPAND_KEY);
-        boolean removedAPNExpand = false;
+        // Initialize preferences.
+        mButtonCdmaSystemSelect = (CdmaSystemSelectListPreference) mPrefScreen
+                .findPreference(BUTTON_CDMA_SYSTEM_SELECT_KEY);
+        mButtonCdmaSubscription = (CdmaSubscriptionListPreference) mPrefScreen
+                .findPreference(BUTTON_CDMA_SUBSCRIPTION_KEY);
+        mButtonCarrierSettings = mPrefScreen.findPreference(BUTTON_CARRIER_SETTINGS_KEY);
+        mButtonAPNExpand = mPrefScreen.findPreference(BUTTON_APN_EXPAND_KEY);
+        mCategoryAPNExpand = mPrefScreen.findPreference(CATEGORY_APN_EXPAND_KEY);
+
+        update(phone);
+    }
+
+    // Unlike mPrefFragment or mPrefScreen, mPhone may change during lifecycle of CdmaOptions.
+    // For example, a new sim card is inserted. When that happens, we update CdmaOptions with new
+    // phone.
+    protected void update(Phone phone) {
+        mPhone = phone;
+
         PersistableBundle carrierConfig =
                 PhoneGlobals.getInstance().getCarrierConfigForSubId(mPhone.getSubId());
         // Some CDMA carriers want the APN settings.
-        if (!carrierConfig.getBoolean(CarrierConfigManager.KEY_SHOW_APN_SETTING_CDMA_BOOL)
-                && mButtonAPNExpand != null) {
-            mPrefScreen.removePreference(mButtonAPNExpand);
-            removedAPNExpand = true;
-        }
-        if (!removedAPNExpand) {
+        boolean addAPNExpand =
+                carrierConfig.getBoolean(CarrierConfigManager.KEY_SHOW_APN_SETTING_CDMA_BOOL);
+        boolean addCdmaSubscription =
+                deviceSupportsNvAndRuim();
+        // Read platform settings for carrier settings
+        boolean addCarrierSettings =
+                carrierConfig.getBoolean(CarrierConfigManager.KEY_CARRIER_SETTINGS_ENABLE_BOOL);
+
+        mPrefScreen.addPreference(mButtonCdmaSystemSelect);
+        mButtonCdmaSystemSelect.setEnabled(true);
+
+        // Making no assumptions of whether they are added or removed at this point.
+        // Calling add or remove explicitly to make sure they are updated.
+
+        if (addAPNExpand) {
             mButtonAPNExpand.setOnPreferenceClickListener(
                     new Preference.OnPreferenceClickListener() {
                         @Override
@@ -83,33 +105,25 @@
                             mPrefFragment.startActivity(intent);
                             return true;
                         }
-            });
+                    });
+            mPrefScreen.addPreference(mCategoryAPNExpand);
+        } else {
+            mPrefScreen.removePreference(mCategoryAPNExpand);
         }
 
-        mButtonCdmaSystemSelect = (CdmaSystemSelectListPreference)mPrefScreen
-                .findPreference(BUTTON_CDMA_SYSTEM_SELECT_KEY);
-
-        mButtonCdmaSubscription = (CdmaSubscriptionListPreference)mPrefScreen
-                .findPreference(BUTTON_CDMA_SUBSCRIPTION_KEY);
-
-        mButtonCdmaSystemSelect.setEnabled(true);
-        if(deviceSupportsNvAndRuim()) {
+        if (addCdmaSubscription) {
             log("Both NV and Ruim supported, ENABLE subscription type selection");
+            mPrefScreen.addPreference(mButtonCdmaSubscription);
             mButtonCdmaSubscription.setEnabled(true);
         } else {
             log("Both NV and Ruim NOT supported, REMOVE subscription type selection");
-            mPrefScreen.removePreference(mPrefScreen
-                                .findPreference(BUTTON_CDMA_SUBSCRIPTION_KEY));
+            mPrefScreen.removePreference(mButtonCdmaSubscription);
         }
 
-        // Read platform settings for carrier settings
-        final boolean isCarrierSettingsEnabled = carrierConfig.getBoolean(
-                CarrierConfigManager.KEY_CARRIER_SETTINGS_ENABLE_BOOL);
-        if (!isCarrierSettingsEnabled) {
-            Preference pref = mPrefScreen.findPreference(BUTTON_CARRIER_SETTINGS_KEY);
-            if (pref != null) {
-                mPrefScreen.removePreference(pref);
-            }
+        if (addCarrierSettings) {
+            mPrefScreen.addPreference(mButtonCarrierSettings);
+        } else {
+            mPrefScreen.removePreference(mButtonCarrierSettings);
         }
     }
 
diff --git a/src/com/android/phone/GsmUmtsOptions.java b/src/com/android/phone/GsmUmtsOptions.java
index 909e9bd..f08aa06 100644
--- a/src/com/android/phone/GsmUmtsOptions.java
+++ b/src/com/android/phone/GsmUmtsOptions.java
@@ -17,12 +17,10 @@
 package com.android.phone;
 
 import android.content.Intent;
-import android.content.res.Resources;
 import android.os.PersistableBundle;
 import android.preference.Preference;
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceScreen;
-import android.preference.TwoStatePreference;
 import android.provider.Settings;
 import android.telephony.CarrierConfigManager;
 
@@ -37,50 +35,48 @@
 
     private Preference mButtonAPNExpand;
     private Preference mCategoryAPNExpand;
-    private TwoStatePreference mButtonAutoSelect;
-    private NetworkSelectListPreference mButtonOperatorSelection;
+    Preference mCarrierSettingPref;
 
     private NetworkOperators mNetworkOperator;
 
-    private static final String BUTTON_APN_EXPAND_KEY = "button_apn_key";
-    private static final String CATEGORY_APN_EXPAND_KEY = "category_apn_key";
+    private static final String BUTTON_APN_EXPAND_KEY = "button_gsm_apn_key";
+    private static final String CATEGORY_APN_EXPAND_KEY = "category_gsm_apn_key";
     private static final String BUTTON_CARRIER_SETTINGS_KEY = "carrier_settings_key";
 
     public static final String EXTRA_SUB_ID = "sub_id";
     private PreferenceFragment mPrefFragment;
     private PreferenceScreen mPrefScreen;
-    INetworkQueryService mNetworkQueryService;
-    private int mSubId;
 
     public GsmUmtsOptions(PreferenceFragment prefFragment, PreferenceScreen prefScreen,
             final int subId, INetworkQueryService queryService) {
         mPrefFragment = prefFragment;
         mPrefScreen = prefScreen;
-        mSubId = subId;
-        mNetworkQueryService = queryService;
-        create();
-    }
-
-    protected void create() {
         mPrefFragment.addPreferencesFromResource(R.xml.gsm_umts_options);
         mButtonAPNExpand = mPrefScreen.findPreference(BUTTON_APN_EXPAND_KEY);
         mCategoryAPNExpand = mPrefScreen.findPreference(CATEGORY_APN_EXPAND_KEY);
-
         mNetworkOperator = (NetworkOperators) mPrefScreen
                 .findPreference(NetworkOperators.CATEGORY_NETWORK_OPERATORS_KEY);
-        mNetworkOperator.initialize(mPrefScreen, mSubId, mNetworkQueryService);
+        mCarrierSettingPref = mPrefScreen.findPreference(BUTTON_CARRIER_SETTINGS_KEY);
 
-        boolean removedAPNExpand = false;
-        boolean removedNetworkOperatorsCategory = false;
+        mNetworkOperator.initialize();
+
+        update(subId, queryService);
+    }
+
+    // Unlike mPrefFragment or mPrefScreen, subId or queryService may change during lifecycle of
+    // GsmUmtsOptions. When that happens, we update GsmUmtsOptions with new parameters.
+    protected void update(final int subId, INetworkQueryService queryService) {
+        boolean addAPNExpand = true;
+        boolean addNetworkOperatorsCategory = true;
+        boolean addCarrierSettings = true;
         if (PhoneFactory.getDefaultPhone().getPhoneType() != PhoneConstants.PHONE_TYPE_GSM) {
             log("Not a GSM phone");
             mCategoryAPNExpand.setEnabled(false);
             mNetworkOperator.setEnabled(false);
         } else {
             log("Not a CDMA phone");
-            Resources res = mPrefFragment.getResources();
             PersistableBundle carrierConfig =
-                    PhoneGlobals.getInstance().getCarrierConfigForSubId(mSubId);
+                    PhoneGlobals.getInstance().getCarrierConfigForSubId(subId);
 
             // Determine which options to display. For GSM these are defaulted to true in
             // CarrierConfigManager, but they maybe overriden by DefaultCarrierConfigService or a
@@ -89,13 +85,11 @@
             // Telephony/res/values/config.xml
             if (!carrierConfig.getBoolean(CarrierConfigManager.KEY_APN_EXPAND_BOOL)
                     && mCategoryAPNExpand != null) {
-                removedAPNExpand = true;
+                addAPNExpand = false;
             }
             if (!carrierConfig.getBoolean(
                     CarrierConfigManager.KEY_OPERATOR_SELECTION_EXPAND_BOOL)) {
-                mPrefScreen.removePreference(mPrefScreen
-                        .findPreference(NetworkOperators.CATEGORY_NETWORK_OPERATORS_KEY));
-                removedNetworkOperatorsCategory = true;
+                addNetworkOperatorsCategory = false;
             }
 
             if (carrierConfig.getBoolean(CarrierConfigManager.KEY_CSP_ENABLED_BOOL)) {
@@ -104,23 +98,19 @@
                     mNetworkOperator.setEnabled(true);
                 } else {
                     log("[CSP] Disabling Operator Selection menu.");
-                    mPrefScreen.removePreference(mPrefScreen
-                            .findPreference(NetworkOperators.CATEGORY_NETWORK_OPERATORS_KEY));
-                    removedNetworkOperatorsCategory = true;
+                    addNetworkOperatorsCategory = false;
                 }
             }
 
             // Read platform settings for carrier settings
-            final boolean isCarrierSettingsEnabled = carrierConfig.getBoolean(
-                CarrierConfigManager.KEY_CARRIER_SETTINGS_ENABLE_BOOL);
-            if (!isCarrierSettingsEnabled) {
-                Preference pref = mPrefScreen.findPreference(BUTTON_CARRIER_SETTINGS_KEY);
-                if (pref != null) {
-                    mPrefScreen.removePreference(pref);
-                }
-            }
+            addCarrierSettings = carrierConfig.getBoolean(
+                    CarrierConfigManager.KEY_CARRIER_SETTINGS_ENABLE_BOOL);
         }
-        if (!removedAPNExpand) {
+
+        // Making no assumptions of whether they are added or removed at this point.
+        // Calling add or remove explicitly to make sure they are updated.
+
+        if (addAPNExpand) {
             mButtonAPNExpand.setOnPreferenceClickListener(
                     new Preference.OnPreferenceClickListener() {
                         @Override
@@ -131,30 +121,33 @@
                             final Intent intent = new Intent(Settings.ACTION_APN_SETTINGS);
                             // This will setup the Home and Search affordance
                             intent.putExtra(":settings:show_fragment_as_subsetting", true);
-                            intent.putExtra(EXTRA_SUB_ID, mSubId);
+                            intent.putExtra(EXTRA_SUB_ID, subId);
                             mPrefFragment.startActivity(intent);
                             return true;
                         }
-            });
+                    });
+            mPrefScreen.addPreference(mCategoryAPNExpand);
         } else {
             mPrefScreen.removePreference(mCategoryAPNExpand);
         }
 
-        if (!removedNetworkOperatorsCategory) {
-            mButtonAutoSelect = (TwoStatePreference) mPrefScreen
-                    .findPreference(NetworkOperators.BUTTON_AUTO_SELECT_KEY);
-            mButtonOperatorSelection = (NetworkSelectListPreference) mPrefScreen
-                    .findPreference(NetworkOperators.BUTTON_NETWORK_SELECT_KEY);
+        if (addNetworkOperatorsCategory) {
+            mPrefScreen.addPreference(mNetworkOperator);
+            mNetworkOperator.update(subId, queryService);
+        } else {
+            mPrefScreen.removePreference(mNetworkOperator);
         }
+
+        if (addCarrierSettings) {
+            mPrefScreen.addPreference(mCarrierSettingPref);
+        } else {
+            mPrefScreen.removePreference(mCarrierSettingPref);
+        }
+
     }
 
-    public boolean preferenceTreeClick(Preference preference) {
-        if (preference == mButtonAutoSelect || preference == mButtonOperatorSelection) {
-            return true;
-        } else {
-            log("preferenceTreeClick: return false");
-            return false;
-        }
+    protected boolean preferenceTreeClick(Preference preference) {
+        return mNetworkOperator.preferenceTreeClick(preference);
     }
 
     protected void log(String s) {
diff --git a/src/com/android/phone/MobileNetworkSettings.java b/src/com/android/phone/MobileNetworkSettings.java
index a969cc1..1af0c6e 100644
--- a/src/com/android/phone/MobileNetworkSettings.java
+++ b/src/com/android/phone/MobileNetworkSettings.java
@@ -191,7 +191,8 @@
         private static final String BUTTON_DATA_USAGE_KEY = "data_usage_summary";
         private static final String BUTTON_ADVANCED_OPTIONS_KEY = "advanced_options";
         private static final String CATEGORY_CALLING_KEY = "calling";
-        private static final String CATEGORY_APN_EXPAND_KEY = "category_apn_key";
+        private static final String CATEGORY_GSM_APN_EXPAND_KEY = "category_gsm_apn_key";
+        private static final String CATEGORY_CDMA_APN_EXPAND_KEY = "category_cdma_apn_key";
 
         private final BroadcastReceiver mPhoneChangeReceiver = new PhoneChangeReceiver();
 
@@ -677,8 +678,6 @@
             public void onReceive(Context context, Intent intent) {
                 Log.i(LOG_TAG, "onReceive:");
                 // When the radio changes (ex: CDMA->GSM), refresh all options.
-                mGsmUmtsOptions = null;
-                mCdmaOptions = null;
                 updateBody();
             }
         }
@@ -846,14 +845,9 @@
 
                 final int phoneType = mPhone.getPhoneType();
                 if (phoneType == PhoneConstants.PHONE_TYPE_CDMA) {
-                    mCdmaOptions = new CdmaOptions(this, prefSet, mPhone);
-                    // In World mode force a refresh of GSM Options.
-                    if (isWorldMode()) {
-                        mGsmUmtsOptions = null;
-                    }
+                    updateCdmaOptions(this, prefSet, mPhone);
                 } else if (phoneType == PhoneConstants.PHONE_TYPE_GSM) {
-                    mGsmUmtsOptions = new GsmUmtsOptions(this, prefSet, phoneSubId,
-                            mNetworkQueryService);
+                    updateGsmUmtsOptions(this, prefSet, phoneSubId, mNetworkQueryService);
                 } else {
                     throw new IllegalStateException("Unexpected phone type: " + phoneType);
                 }
@@ -868,9 +862,8 @@
                 // change Preferred Network Mode.
                 mButtonPreferredNetworkMode.setOnPreferenceChangeListener(this);
 
-                mCdmaOptions = new CdmaOptions(this, prefSet, mPhone);
-                mGsmUmtsOptions = new GsmUmtsOptions(this, prefSet, phoneSubId,
-                        mNetworkQueryService);
+                updateCdmaOptions(this, prefSet, mPhone);
+                updateGsmUmtsOptions(this, prefSet, phoneSubId, mNetworkQueryService);
             } else {
                 prefSet.removePreference(mButtonPreferredNetworkMode);
                 final int phoneType = mPhone.getPhoneType();
@@ -914,12 +907,8 @@
                             }
                         }
                     }
-                    mCdmaOptions = new CdmaOptions(this, prefSet, mPhone);
+                    updateCdmaOptions(this, prefSet, mPhone);
 
-                    // In World mode force a refresh of GSM Options.
-                    if (isWorldMode()) {
-                        mGsmUmtsOptions = null;
-                    }
                 } else if (phoneType == PhoneConstants.PHONE_TYPE_GSM) {
                     if (isSupportTdscdma()) {
                         mButtonEnabledNetworks.setEntries(
@@ -956,8 +945,7 @@
                         mButtonEnabledNetworks.setEntryValues(
                                 R.array.enabled_networks_values);
                     }
-                    mGsmUmtsOptions = new GsmUmtsOptions(this, prefSet, phoneSubId,
-                            mNetworkQueryService);
+                    updateGsmUmtsOptions(this, prefSet, phoneSubId, mNetworkQueryService);
                 } else {
                     throw new IllegalStateException("Unexpected phone type: " + phoneType);
                 }
@@ -1048,7 +1036,11 @@
             if (ps != null) {
                 ps.setEnabled(hasActiveSubscriptions);
             }
-            ps = findPreference(CATEGORY_APN_EXPAND_KEY);
+            ps = findPreference(CATEGORY_GSM_APN_EXPAND_KEY);
+            if (ps != null) {
+                ps.setEnabled(hasActiveSubscriptions);
+            }
+            ps = findPreference(CATEGORY_CDMA_APN_EXPAND_KEY);
             if (ps != null) {
                 ps.setEnabled(hasActiveSubscriptions);
             }
@@ -1701,12 +1693,10 @@
                 return;
             }
 
-            if (mGsmUmtsOptions == null) {
-                mGsmUmtsOptions = new GsmUmtsOptions(this, prefSet, mPhone.getSubId(),
-                        mNetworkQueryService);
-            }
+            updateGsmUmtsOptions(this, prefSet, mPhone.getSubId(), mNetworkQueryService);
+
             PreferenceCategory apnExpand =
-                    (PreferenceCategory) prefSet.findPreference(CATEGORY_APN_EXPAND_KEY);
+                    (PreferenceCategory) prefSet.findPreference(CATEGORY_GSM_APN_EXPAND_KEY);
             PreferenceCategory networkOperatorCategory =
                     (PreferenceCategory) prefSet.findPreference(
                             NetworkOperators.CATEGORY_NETWORK_OPERATORS_KEY);
@@ -1732,9 +1722,7 @@
             if (prefSet == null) {
                 return;
             }
-            if (enable && mCdmaOptions == null) {
-                mCdmaOptions = new CdmaOptions(this, prefSet, mPhone);
-            }
+            updateCdmaOptions(this, prefSet, mPhone);
             CdmaSystemSelectListPreference systemSelect =
                     (CdmaSystemSelectListPreference)prefSet.findPreference
                             (BUTTON_CDMA_SYSTEM_SELECT_KEY);
@@ -1795,6 +1783,29 @@
             mAdvancedOptions.setSummary(summary.toString());
         }
 
+        private void updateGsmUmtsOptions(PreferenceFragment prefFragment,
+                PreferenceScreen prefScreen, final int subId, INetworkQueryService queryService) {
+            // We don't want to re-create GsmUmtsOptions if already exists. Otherwise, the
+            // preferences inside it will also be re-created which causes unexpected behavior.
+            // For example, the open dialog gets dismissed or detached after pause / resume.
+            if (mGsmUmtsOptions == null) {
+                mGsmUmtsOptions = new GsmUmtsOptions(prefFragment, prefScreen, subId, queryService);
+            } else {
+                mGsmUmtsOptions.update(subId, queryService);
+            }
+        }
+
+        private void updateCdmaOptions(PreferenceFragment prefFragment, PreferenceScreen prefScreen,
+                Phone phone) {
+            // We don't want to re-create CdmaOptions if already exists. Otherwise, the preferences
+            // inside it will also be re-created which causes unexpected behavior. For example,
+            // the open dialog gets dismissed or detached after pause / resume.
+            if (mCdmaOptions == null) {
+                mCdmaOptions = new CdmaOptions(prefFragment, prefScreen, phone);
+            } else {
+                mCdmaOptions.update(phone);
+            }
+        }
     }
 }
 
diff --git a/src/com/android/phone/NetworkOperators.java b/src/com/android/phone/NetworkOperators.java
index c01db91..4ac5c84 100644
--- a/src/com/android/phone/NetworkOperators.java
+++ b/src/com/android/phone/NetworkOperators.java
@@ -16,13 +16,13 @@
 
 package com.android.phone;
 
+import android.app.ProgressDialog;
 import android.content.Context;
 import android.os.AsyncResult;
 import android.os.Handler;
 import android.os.Message;
 import android.preference.Preference;
 import android.preference.PreferenceCategory;
-import android.preference.PreferenceScreen;
 import android.preference.TwoStatePreference;
 import android.telephony.ServiceState;
 import android.telephony.SubscriptionManager;
@@ -58,15 +58,7 @@
     private TwoStatePreference mAutoSelect;
 
     private int mSubId;
-
-    public NetworkOperators(
-            Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
-        super(context, attrs, defStyleAttr, defStyleRes);
-    }
-
-    public NetworkOperators(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-    }
+    private ProgressDialog mProgressDialog;
 
     public NetworkOperators(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -77,30 +69,32 @@
     }
 
     /**
-     * Initialize NetworkOperators instance with information like subId, queryService.
-     * It is required to have preferences work properly.
+     * Initialize NetworkOperators instance.
+     */
+    public void initialize() {
+        mNetworkSelect =
+                (NetworkSelectListPreference) findPreference(BUTTON_NETWORK_SELECT_KEY);
+        mAutoSelect =
+                (TwoStatePreference) findPreference(BUTTON_AUTO_SELECT_KEY);
+        mProgressDialog = new ProgressDialog(getContext());
+    }
+
+    /**
+     * Update NetworkOperators instance if like subId or queryService are updated.
      *
-     * @param prefScreen prefScreen this category is in.
      * @param subId Corresponding subscription ID of this network.
      * @param queryService The service to do network queries.
      */
-    public void initialize(PreferenceScreen prefScreen,
-            final int subId, INetworkQueryService queryService) {
+    protected void update(final int subId, INetworkQueryService queryService) {
         mSubId = subId;
-
-        mNetworkSelect =
-                (NetworkSelectListPreference) prefScreen.findPreference(BUTTON_NETWORK_SELECT_KEY);
-        mAutoSelect =
-                (TwoStatePreference) prefScreen.findPreference(BUTTON_AUTO_SELECT_KEY);
-
         mPhoneId = SubscriptionManager.getPhoneId(mSubId);
 
         if (mAutoSelect != null) {
             mAutoSelect.setOnPreferenceChangeListener(this);
         }
 
-        if (mAutoSelect != null) {
-            mNetworkSelect.initialize(mSubId, queryService, this);
+        if (mNetworkSelect != null) {
+            mNetworkSelect.initialize(mSubId, queryService, this, mProgressDialog);
         }
 
         getNetworkSelectionMode();
@@ -130,6 +124,7 @@
             switch (msg.what) {
                 case EVENT_AUTO_SELECT_DONE:
                     mAutoSelect.setEnabled(true);
+                    dismissProgressBar();
 
                     ar = (AsyncResult) msg.obj;
                     if (ar.exception != null) {
@@ -210,6 +205,7 @@
         }
         if (autoSelect) {
             if (DBG) logd("select network automatically...");
+            showAutoSelectProgressBar();
             mAutoSelect.setEnabled(false);
             Message msg = mHandler.obtainMessage(EVENT_AUTO_SELECT_DONE);
             Phone phone = PhoneFactory.getPhone(mPhoneId);
@@ -230,6 +226,25 @@
         }
     }
 
+    private void dismissProgressBar() {
+        if (mProgressDialog != null && mProgressDialog.isShowing()) {
+            mProgressDialog.dismiss();
+        }
+    }
+
+    private void showAutoSelectProgressBar() {
+        mProgressDialog.setMessage(
+                getContext().getResources().getString(R.string.register_automatically));
+        mProgressDialog.setCanceledOnTouchOutside(false);
+        mProgressDialog.setCancelable(false);
+        mProgressDialog.setIndeterminate(true);
+        mProgressDialog.show();
+    }
+
+    protected boolean preferenceTreeClick(Preference preference) {
+        return (preference == mAutoSelect || preference == mNetworkSelect);
+    }
+
     private void logd(String msg) {
         Log.d(LOG_TAG, "[NetworksList] " + msg);
     }
diff --git a/src/com/android/phone/NetworkSelectListPreference.java b/src/com/android/phone/NetworkSelectListPreference.java
index a0d81fc..946856a 100644
--- a/src/com/android/phone/NetworkSelectListPreference.java
+++ b/src/com/android/phone/NetworkSelectListPreference.java
@@ -22,6 +22,8 @@
 import android.os.AsyncResult;
 import android.os.Handler;
 import android.os.Message;
+import android.os.Parcel;
+import android.os.Parcelable;
 import android.os.RemoteException;
 import android.preference.ListPreference;
 import android.preference.Preference;
@@ -61,7 +63,7 @@
 
     private int mPhoneId = SubscriptionManager.INVALID_PHONE_INDEX;
     private List<OperatorInfo> mOperatorInfoList;
-    private  OperatorInfo mOperatorInfo;
+    private OperatorInfo mOperatorInfo;
 
     private int mSubId;
     private NetworkOperators mNetworkOperators;
@@ -179,10 +181,12 @@
 
     // This initialize method needs to be called for this preference to work properly.
     protected void initialize(int subId, INetworkQueryService queryService,
-            NetworkOperators networkOperators) {
+            NetworkOperators networkOperators, ProgressDialog progressDialog) {
         mSubId = subId;
         mNetworkQueryService = queryService;
         mNetworkOperators = networkOperators;
+        // This preference should share the same progressDialog with networkOperators category.
+        mProgressDialog = progressDialog;
 
         if (SubscriptionManager.isValidSubscriptionId(mSubId)) {
             mPhoneId = SubscriptionManager.getPhoneId(mSubId);
@@ -227,7 +231,7 @@
                 NotificationMgr.NETWORK_SELECTION_NOTIFICATION, status);
     }
 
-    private void displayNetworkSeletionInProgress() {
+    private void displayNetworkSelectionInProgress() {
         showProgressBar(DIALOG_NETWORK_SELECTION);
     }
 
@@ -357,14 +361,21 @@
     }
 
     private void showProgressBar(int id) {
-        if ((id == DIALOG_NETWORK_SELECTION) || (id == DIALOG_NETWORK_LIST_LOAD)) {
+        if (mProgressDialog == null) {
             mProgressDialog = new ProgressDialog(getContext());
+        } else {
+            // Dismiss progress bar if it's showing now.
+            dismissProgressBar();
+        }
+
+        if ((id == DIALOG_NETWORK_SELECTION) || (id == DIALOG_NETWORK_LIST_LOAD)) {
             switch (id) {
                 case DIALOG_NETWORK_SELECTION:
                     final String networkSelectMsg = getContext().getResources()
                             .getString(R.string.register_on_network,
                                     getNetworkTitle(mOperatorInfo));
                     mProgressDialog.setMessage(networkSelectMsg);
+                    mProgressDialog.setCanceledOnTouchOutside(false);
                     mProgressDialog.setCancelable(false);
                     mProgressDialog.setIndeterminate(true);
                     break;
@@ -372,6 +383,8 @@
                     mProgressDialog.setMessage(
                             getContext().getResources().getString(R.string.load_networks_progress));
                     mProgressDialog.setCanceledOnTouchOutside(false);
+                    mProgressDialog.setCancelable(true);
+                    mProgressDialog.setIndeterminate(false);
                     mProgressDialog.setOnCancelListener(this);
                     break;
                 default:
@@ -397,7 +410,7 @@
         Phone phone = PhoneFactory.getPhone(mPhoneId);
         if (phone != null) {
             phone.selectNetworkManually(mOperatorInfo, true, msg);
-            displayNetworkSeletionInProgress();
+            displayNetworkSelectionInProgress();
         } else {
             loge("Error selecting network. phone is null.");
         }
@@ -405,6 +418,87 @@
         return true;
     }
 
+    @Override
+    protected Parcelable onSaveInstanceState() {
+        final Parcelable superState = super.onSaveInstanceState();
+        if (isPersistent()) {
+            // No need to save instance state since it's persistent
+            return superState;
+        }
+
+        final SavedState myState = new SavedState(superState);
+        myState.mDialogListEntries = getEntries();
+        myState.mDialogListEntryValues = getEntryValues();
+        myState.mOperatorInfoList = mOperatorInfoList;
+        return myState;
+    }
+
+    @Override
+    protected void onRestoreInstanceState(Parcelable state) {
+        if (state == null || !state.getClass().equals(SavedState.class)) {
+            // Didn't save state for us in onSaveInstanceState
+            super.onRestoreInstanceState(state);
+            return;
+        }
+
+        SavedState myState = (SavedState) state;
+
+        if (getEntries() == null && myState.mDialogListEntries != null) {
+            setEntries(myState.mDialogListEntries);
+        }
+        if (getEntryValues() == null && myState.mDialogListEntryValues != null) {
+            setEntryValues(myState.mDialogListEntryValues);
+        }
+        if (mOperatorInfoList == null && myState.mOperatorInfoList != null) {
+            mOperatorInfoList = myState.mOperatorInfoList;
+        }
+
+        super.onRestoreInstanceState(myState.getSuperState());
+    }
+
+    /**
+     *  We save entries, entryValues and operatorInfoList into bundle.
+     *  At onCreate of fragment, dialog will be restored if it was open. In this case,
+     *  we need to restore entries, entryValues and operatorInfoList. Without those information,
+     *  onPreferenceChange will fail if user select network from the dialog.
+     */
+    private static class SavedState extends BaseSavedState {
+        CharSequence[] mDialogListEntries;
+        CharSequence[] mDialogListEntryValues;
+        List<OperatorInfo> mOperatorInfoList;
+
+        SavedState(Parcel source) {
+            super(source);
+            final ClassLoader boot = Object.class.getClassLoader();
+            mDialogListEntries = source.readCharSequenceArray();
+            mDialogListEntryValues = source.readCharSequenceArray();
+            mOperatorInfoList = source.readParcelableList(mOperatorInfoList, boot);
+        }
+
+        @Override
+        public void writeToParcel(Parcel dest, int flags) {
+            super.writeToParcel(dest, flags);
+            dest.writeCharSequenceArray(mDialogListEntries);
+            dest.writeCharSequenceArray(mDialogListEntryValues);
+            dest.writeParcelableList(mOperatorInfoList, flags);
+        }
+
+        SavedState(Parcelable superState) {
+            super(superState);
+        }
+
+        public static final Parcelable.Creator<SavedState> CREATOR =
+                new Parcelable.Creator<SavedState>() {
+                    public SavedState createFromParcel(Parcel in) {
+                        return new SavedState(in);
+                    }
+
+                    public SavedState[] newArray(int size) {
+                        return new SavedState[size];
+                    }
+                };
+    }
+
     private void logd(String msg) {
         Log.d(LOG_TAG, "[NetworksList] " + msg);
     }