private void fillList() {
     final TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
     String mccmnc = mSubscriptionInfo == null ? "" : tm.getSimOperator
             (mSubscriptionInfo != null ? mSubscriptionInfo.getSubscriptionId()
                     : SubscriptionManager.INVALID_SUBSCRIPTION_ID);
     /// M: for plug-in @{
     // use mcc&mnc in IMPI to query apn.
     Log.d(TAG, "before plugin, mccmnc = " + mccmnc);
     mccmnc = mApnExt.getOperatorNumericFromImpi(mccmnc,
             SubscriptionManager.getPhoneId(mSubscriptionInfo.getSubscriptionId()));
     /// @}
     Log.d(TAG, "mccmnc = " + mccmnc);
    /*
    StringBuilder where = new StringBuilder("numeric=\"" + mccmnc +
             "\" AND NOT (type='ia' AND (apn=\"\" OR apn IS NULL)) AND user_visible!=0");
     */
     String where = "numeric=\"" + mccmnc + "\"";
     /// M: for [C2K APN Customization] @{
     if (mSubscriptionInfo != null) {
         int subId = mSubscriptionInfo.getSubscriptionId();
         if (CdmaUtils.isSupportCdma(subId)) {
             where = CdmaApnSetting.customizeQuerySelectionforCdma(where, mccmnc, subId);
         }
     }
     /// @}
     where += " AND NOT (type='ia' AND (apn=\"\" OR apn IS NULL)) AND user_visible!=0";
     /// M: for VoLTE, do not show ims apn for non-VoLTE project @{
     /*
     if (mHideImsApn) {
         where.append(" AND NOT (type='ims')");
     }
     */
     //if (!FeatureOption.MTK_VOLTE_SUPPORT || mHideImsApn) {
     where += " AND NOT (type='ims' OR type='ia,ims')";
     //}
     /// @}
     /// M: for plug-in
     where = mApnExt.getFillListQuery(where, mccmnc);
     Log.d(TAG, "fillList where: " + where);
     String order = mApnExt.getApnSortOrder(Telephony.Carriers.DEFAULT_SORT_ORDER);
     order = "_id asc";
     Log.d(TAG, "fillList sort: " + order);
     Cursor cursor = getContentResolver().query(
             Telephony.Carriers.CONTENT_URI,
             new String[]{"_id", "name", "apn", "type", "mvno_type", "mvno_match_data",
                     "sourcetype"}, where.toString(), null, order);
     if (cursor != null) {
         Log.d(TAG, "fillList, cursor count: " + cursor.getCount());
         IccRecords r = null;
         if (mUiccController != null && mSubscriptionInfo != null) {
             r = mUiccController.getIccRecords(SubscriptionManager.getPhoneId(
                     mSubscriptionInfo.getSubscriptionId()), UiccController.APP_FAM_3GPP);
         }
         PreferenceGroup apnList = (PreferenceGroup) findPreference("apn_list");
         apnList.removeAll();
         /// M: for plug-in, use Preference instead ApnPreference for the
         // convenience of plug-in side
         ArrayList<Preference> mnoApnList = new ArrayList<Preference>();
         ArrayList<Preference> mvnoApnList = new ArrayList<Preference>();
         ArrayList<Preference> mnoMmsApnList = new ArrayList<Preference>();
         ArrayList<Preference> mvnoMmsApnList = new ArrayList<Preference>();
         mSelectedKey = getSelectedApnKey();
         cursor.moveToFirst();
         while (!cursor.isAfterLast()) {
             String name = cursor.getString(NAME_INDEX);
             String apn = cursor.getString(APN_INDEX);
             String key = cursor.getString(ID_INDEX);
             String type = cursor.getString(TYPES_INDEX);
             String mvnoType = cursor.getString(MVNO_TYPE_INDEX);
             String mvnoMatchData = cursor.getString(MVNO_MATCH_DATA_INDEX);
             /// M: check source type, some types are not editable
             int sourcetype = cursor.getInt(SOURCE_TYPE_INDEX);
             /// M: skip specific APN type
             if (shouldSkipApn(type)) {
                 cursor.moveToNext();
                 continue;
             }
             /// M: for plug-in
             name = mApnExt.updateApnName(name, sourcetype);
             ApnPreference pref = new ApnPreference(getPrefContext());
             pref.setKey(key);
             pref.setTitle(name);
             pref.setSummary(apn);
             pref.setPersistent(false);
             pref.setOnPreferenceChangeListener(this);
             pref.setSubId(mSubscriptionInfo.getSubscriptionId());
             /// M: for [Read Only APN]
             pref.setApnEditable(mApnExt.isAllowEditPresetApn(type, apn, mccmnc, sourcetype));
             pref.setSubId(mSubscriptionInfo == null ? null : mSubscriptionInfo
                     .getSubscriptionId());
             /// M: for ALPS02500557, do not select emergency APN
             boolean selectable = ((type == null) || (!type.equals("mms")
                     && !type.equals("ia") && !type.equals("ims") && !type.equals("emergency")))
                     /// M: for plug-in
                     && mApnExt.isSelectable(type);
             pref.setSelectable(selectable);
             Log.d(TAG, "mSelectedKey = " + mSelectedKey + " key = " + key + " name = " + name +
                     " selectable=" + selectable);
             if (selectable) {
                 /// M: select prefer APN later, as the apn list are not solid now @{
                 /*
                 if ((mSelectedKey != null) && mSelectedKey.equals(key)) {
                     pref.setChecked();
                 }
                 */
                 /// @}
                 addApnToList(pref, mnoApnList, mvnoApnList, r, mvnoType, mvnoMatchData);
                 /// M: For CT feature,when apns-conf.xml add type extra value "supl",
                 //     selectable maybe ture when 46011 mms, so need this method.
                 mApnExt.customizeUnselectableApn(type, mvnoType, mvnoMatchData, mnoApnList, mvnoApnList,
                         mSubscriptionInfo == null ? null : mSubscriptionInfo
                                 .getSubscriptionId());
             } else {
                 addApnToList(pref, mnoMmsApnList, mvnoMmsApnList, r, mvnoType, mvnoMatchData);
                 /// M: for plug-in
                 mApnExt.customizeUnselectableApn(type, mvnoType, mvnoMatchData, mnoMmsApnList, mvnoMmsApn
                         mSubscriptionInfo == null ? null : mSubscriptionInfo
                                 .getSubscriptionId());
             }
             cursor.moveToNext();
         }
         cursor.close();
         if (!mvnoApnList.isEmpty()) {
             mnoApnList = mvnoApnList;
             mnoMmsApnList = mvnoMmsApnList;
             // Also save the mvno info
         }
         for (Preference preference : mnoApnList) {
             apnList.addPreference(preference);
         }
         for (Preference preference : mnoMmsApnList) {
             apnList.addPreference(preference);
         }
         /// M: always set a prefer APN
         setPreferApnChecked(mnoApnList);
         /// M: update screen enable state according to airplane mode, SIM radio status, etc.
         updateScreenEnableState(getActivity());
     }
}