diff --git a/src/com/android/phone/PhoneGlobals.java b/src/com/android/phone/PhoneGlobals.java
index b931340..e71d1fb 100644
--- a/src/com/android/phone/PhoneGlobals.java
+++ b/src/com/android/phone/PhoneGlobals.java
@@ -48,6 +48,7 @@
 import android.os.UserHandle;
 import android.preference.PreferenceManager;
 import android.provider.Settings.System;
+import android.telephony.CarrierConfigManager;
 import android.telephony.ServiceState;
 import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
@@ -238,7 +239,7 @@
                 // TODO: This event should be handled by the lock screen, just
                 // like the "SIM missing" and "Sim locked" cases (bug 1804111).
                 case EVENT_SIM_NETWORK_LOCKED:
-                    if (getResources().getBoolean(R.bool.ignore_sim_network_locked_events)) {
+                    if (getCarrierConfig().getBoolean(CarrierConfigManager.BOOL_IGNORE_SIM_NETWORK_LOCKED_EVENTS)) {
                         // Some products don't have the concept of a "SIM network lock"
                         Log.i(LOG_TAG, "Ignoring EVENT_SIM_NETWORK_LOCKED event; "
                               + "not showing 'SIM network unlock' PIN entry screen");
diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 3045903..3b629d5 100644
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -37,6 +37,7 @@
 import android.provider.Settings;
 import android.telecom.PhoneAccount;
 import android.telecom.TelecomManager;
+import android.telephony.CarrierConfigManager;
 import android.telephony.CellInfo;
 import android.telephony.IccOpenLogicalChannelResponse;
 import android.telephony.NeighboringCellInfo;
@@ -2294,12 +2295,12 @@
 
     @Override
     public boolean canChangeDtmfToneLength() {
-        return mPhone.getContext().getResources().getBoolean(R.bool.dtmf_type_enabled);
+        return mApp.getCarrierConfig().getBoolean(CarrierConfigManager.BOOL_DTMF_TYPE_ENABLED);
     }
 
     @Override
     public boolean isWorldPhone() {
-        return mPhone.getContext().getResources().getBoolean(R.bool.world_phone);
+        return mApp.getCarrierConfig().getBoolean(CarrierConfigManager.BOOL_WORLD_PHONE);
     }
 
     @Override
diff --git a/src/com/android/services/telephony/CdmaConference.java b/src/com/android/services/telephony/CdmaConference.java
index 6a55efe..3423a3e 100755
--- a/src/com/android/services/telephony/CdmaConference.java
+++ b/src/com/android/services/telephony/CdmaConference.java
@@ -18,9 +18,11 @@
 
 import android.content.Context;
 import android.content.res.Resources;
+import android.os.Bundle;
 import android.telecom.Conference;
 import android.telecom.Connection;
 import android.telecom.PhoneAccountHandle;
+import android.telephony.CarrierConfigManager;
 
 import com.android.internal.telephony.Call;
 import com.android.internal.telephony.CallStateException;
@@ -165,9 +167,11 @@
         Context context = PhoneGlobals.getInstance();
 
         if (context != null) {
-            Resources r = context.getResources();
-            if (r != null) {
-                supportSwapAfterMerge = r.getBoolean(R.bool.support_swap_after_merge);
+            CarrierConfigManager configManager = (CarrierConfigManager) context.getSystemService(
+                    Context.CARRIER_CONFIG_SERVICE);
+            Bundle b = configManager.getConfig();
+            if (b != null) {
+                supportSwapAfterMerge = b.getBoolean(CarrierConfigManager.BOOL_SUPPORT_SWAP_AFTER_MERGE);
                 Log.d(this, "Current network support swap after call merged capability is "
                         + supportSwapAfterMerge);
             }