diff --git a/res/values/strings.xml b/res/values/strings.xml
index 8aeefdbab90..1753ce53398 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -12495,6 +12495,16 @@
     <string name="calls_preference_title">Calls</string>
     <!-- Provider Model: SMS preference title -->
     <string name="sms_preference_title">SMS</string>
+    <!-- Provider Model: Preferred status in summary for Calls & SMS -->
+    <string name="calls_sms_preferred">preferred</string>
+    <!-- Provider Model: Calls Preferred status in summary for Calls & SMS -->
+    <string name="calls_sms_calls_preferred">calls preferred</string>
+    <!-- Provider Model: SMS Preferred status in summary for Calls & SMS -->
+    <string name="calls_sms_sms_preferred">SMS preferred</string>
+    <!-- Provider Model: Unavailable status in summary for Calls & SMS -->
+    <string name="calls_sms_unavailable">unavailable</string>
+    <!-- Provider Model: No SIM status in summary for Calls & SMS -->
+    <string name="calls_sms_no_sim">No SIM</string>
     <!-- Network & internet preferences title [CHAR LIMIT=NONE] -->
     <string name="network_and_internet_preferences_title">Preferences</string>
     <!-- Network & internet preferences summary [CHAR LIMIT=NONE] -->
diff --git a/src/com/android/settings/network/NetworkProviderCallsSmsController.java b/src/com/android/settings/network/NetworkProviderCallsSmsController.java
index f7d9221a451..3a228dced19 100644
--- a/src/com/android/settings/network/NetworkProviderCallsSmsController.java
+++ b/src/com/android/settings/network/NetworkProviderCallsSmsController.java
@@ -22,7 +22,6 @@ import android.content.Context;
 import android.os.UserManager;
 import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
-import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.lifecycle.LifecycleObserver;
@@ -42,10 +41,6 @@ public class NetworkProviderCallsSmsController extends AbstractPreferenceControl
 
     private static final String TAG = "NetworkProviderCallsSmsController";
     private static final String KEY = "calls_and_sms";
-    private static final String PREFERRED_CALL_SMS = "preferred";
-    private static final String PREFERRED_CALL = "calls preferred";
-    private static final String PREFERRED_SMS = "SMS preferred";
-    private static final String UNAVAILABLE = "unavailable";
 
     private UserManager mUserManager;
     private SubscriptionManager mSubscriptionManager;
@@ -91,7 +86,7 @@ public class NetworkProviderCallsSmsController extends AbstractPreferenceControl
                 mSubscriptionManager);
 
         if (subs.isEmpty()) {
-            return null;
+            return setSummaryResId(R.string.calls_sms_no_sim);
         } else {
             final StringBuilder summary = new StringBuilder();
             for (SubscriptionInfo subInfo : subs) {
@@ -131,19 +126,23 @@ public class NetworkProviderCallsSmsController extends AbstractPreferenceControl
         boolean isSmsPreferred = subId == getDefaultSmsSubscriptionId();
 
         if (!SubscriptionManager.isValidSubscriptionId(subId)) {
-            status = UNAVAILABLE;
+            status = setSummaryResId(R.string.calls_sms_unavailable);
         } else {
             if (isDataPreferred && isSmsPreferred) {
-                status = PREFERRED_CALL_SMS;
+                status = setSummaryResId(R.string.calls_sms_preferred);
             } else if (isDataPreferred) {
-                status = PREFERRED_CALL;
+                status = setSummaryResId(R.string.calls_sms_calls_preferred);
             } else if (isSmsPreferred) {
-                status = PREFERRED_SMS;
+                status = setSummaryResId(R.string.calls_sms_sms_preferred);
             }
         }
         return status;
     }
 
+    private String setSummaryResId(int resId) {
+        return mContext.getResources().getString(resId);
+    }
+
     @VisibleForTesting
     protected int getDefaultVoiceSubscriptionId(){
         return SubscriptionManager.getDefaultVoiceSubscriptionId();
@@ -167,6 +166,7 @@ public class NetworkProviderCallsSmsController extends AbstractPreferenceControl
         if (subs.isEmpty()) {
             mPreference.setEnabled(false);
         } else {
+            mPreference.setEnabled(true);
             mPreference.setFragment(NetworkProviderCallsSmsFragment.class.getCanonicalName());
         }
     }
diff --git a/tests/unit/src/com/android/settings/network/NetworkProviderCallsSmsControllerTest.java b/tests/unit/src/com/android/settings/network/NetworkProviderCallsSmsControllerTest.java
index 061e1c01c66..8444f11bf0f 100644
--- a/tests/unit/src/com/android/settings/network/NetworkProviderCallsSmsControllerTest.java
+++ b/tests/unit/src/com/android/settings/network/NetworkProviderCallsSmsControllerTest.java
@@ -27,6 +27,7 @@ import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
 import android.text.TextUtils;
 
+import com.android.settings.testutils.ResourcesUtils;
 import com.android.settingslib.core.lifecycle.Lifecycle;
 import com.android.settingslib.RestrictedPreference;
 
@@ -46,6 +47,7 @@ import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 
 import static org.mockito.Mockito.doReturn;
@@ -60,10 +62,6 @@ public class NetworkProviderCallsSmsControllerTest {
     private static final String KEY_PREFERENCE_CALLS_SMS = "calls_and_sms";
     private static final String DISPLAY_NAME_1 = "Sub 1";
     private static final String DISPLAY_NAME_2 = "Sub 2";
-    private static final String PREFERRED_CALL_SMS = "preferred";
-    private static final String PREFERRED_CALL = "calls preferred";
-    private static final String PREFERRED_SMS = "SMS preferred";
-    private static final String UNAVAILABLE = "unavailable";
 
     @Mock
     private SubscriptionManager mSubscriptionManager;
@@ -150,6 +148,20 @@ public class NetworkProviderCallsSmsControllerTest {
         when(subscriptionInfo.getDisplayName()).thenReturn(displayName);
     }
 
+    private String setSummaryResId(String resName) {
+        return ResourcesUtils.getResourcesString(mContext, resName);
+    }
+
+    @Test
+    @UiThreadTest
+    public void getSummary_noSim_returnNoSim() {
+        when(mSubscriptionManager.getActiveSubscriptionInfoList()).thenReturn(new ArrayList<>());
+        displayPreferenceWithLifecycle();
+
+        assertTrue(TextUtils.equals(mController.getSummary(),
+                setSummaryResId("calls_sms_no_sim")));
+    }
+
     @Test
     @UiThreadTest
     public void getSummary_invalidSubId_returnUnavailable() {
@@ -162,7 +174,7 @@ public class NetworkProviderCallsSmsControllerTest {
         final StringBuilder summary = new StringBuilder();
         summary.append(DISPLAY_NAME_1)
                 .append(" (")
-                .append(UNAVAILABLE)
+                .append(setSummaryResId("calls_sms_unavailable"))
                 .append(")");
 
         assertTrue(TextUtils.equals(mController.getSummary(), summary));
@@ -181,7 +193,7 @@ public class NetworkProviderCallsSmsControllerTest {
         final StringBuilder summary = new StringBuilder();
         summary.append(DISPLAY_NAME_1)
                 .append(" (")
-                .append(UNAVAILABLE)
+                .append(setSummaryResId("calls_sms_unavailable"))
                 .append(")")
                 .append(", ")
                 .append(DISPLAY_NAME_2);
@@ -233,12 +245,12 @@ public class NetworkProviderCallsSmsControllerTest {
         final StringBuilder summary = new StringBuilder();
         summary.append(DISPLAY_NAME_1)
                 .append(" (")
-                .append(PREFERRED_CALL)
+                .append(setSummaryResId("calls_sms_calls_preferred"))
                 .append(")")
                 .append(", ")
                 .append(DISPLAY_NAME_2)
                 .append(" (")
-                .append(PREFERRED_SMS)
+                .append(setSummaryResId("calls_sms_sms_preferred"))
                 .append(")");
 
         assertTrue(TextUtils.equals(mController.getSummary(), summary));
@@ -260,12 +272,12 @@ public class NetworkProviderCallsSmsControllerTest {
         final StringBuilder summary = new StringBuilder();
         summary.append(DISPLAY_NAME_1)
                 .append(" (")
-                .append(PREFERRED_SMS)
+                .append(setSummaryResId("calls_sms_sms_preferred"))
                 .append(")")
                 .append(", ")
                 .append(DISPLAY_NAME_2)
                 .append(" (")
-                .append(PREFERRED_CALL)
+                .append(setSummaryResId("calls_sms_calls_preferred"))
                 .append(")");
 
         assertTrue(TextUtils.equals(mController.getSummary(), summary));
@@ -287,7 +299,7 @@ public class NetworkProviderCallsSmsControllerTest {
         final StringBuilder summary = new StringBuilder();
         summary.append(DISPLAY_NAME_1)
                 .append(" (")
-                .append(PREFERRED_CALL_SMS)
+                .append(setSummaryResId("calls_sms_preferred"))
                 .append(")")
                 .append(", ")
                 .append(DISPLAY_NAME_2);