diff --git a/src/com/android/settings/deviceinfo/PhoneNumberPreferenceController.java b/src/com/android/settings/deviceinfo/PhoneNumberPreferenceController.java
index 6df100ca4ec..421963eb31c 100644
--- a/src/com/android/settings/deviceinfo/PhoneNumberPreferenceController.java
+++ b/src/com/android/settings/deviceinfo/PhoneNumberPreferenceController.java
@@ -84,7 +84,7 @@ public class PhoneNumberPreferenceController extends BasePreferenceController {
         for (int simSlotNumber = 0; simSlotNumber < mPreferenceList.size(); simSlotNumber++) {
             final Preference simStatusPreference = mPreferenceList.get(simSlotNumber);
             simStatusPreference.setTitle(getPreferenceTitle(simSlotNumber));
-            simStatusPreference.setSummary(getPhoneNumber(simSlotNumber));
+            setPhoneNumber(simSlotNumber);
         }
     }
 
@@ -93,24 +93,15 @@ public class PhoneNumberPreferenceController extends BasePreferenceController {
         return true;
     }
 
-    private CharSequence getFirstPhoneNumber() {
-        final List<SubscriptionInfo> subscriptionInfoList =
-                mSubscriptionManager.getActiveSubscriptionInfoList();
-        if (subscriptionInfoList == null || subscriptionInfoList.isEmpty()) {
-            return mContext.getText(R.string.device_info_default);
-        }
-
-        // For now, We only return first result for slice view.
-        return getFormattedPhoneNumber(subscriptionInfoList.get(0));
-    }
-
-    private CharSequence getPhoneNumber(int simSlot) {
+    private void setPhoneNumber(int simSlot) {
+        final Preference simStatusPreference = mPreferenceList.get(simSlot);
         final SubscriptionInfo subscriptionInfo = getSubscriptionInfo(simSlot);
+        simStatusPreference.setEnabled(subscriptionInfo != null);
         if (subscriptionInfo == null) {
-            return mContext.getText(R.string.device_info_default);
+            simStatusPreference.setSummary(mContext.getString(R.string.device_info_not_available));
+        } else {
+            simStatusPreference.setSummary(getFormattedPhoneNumber(subscriptionInfo));
         }
-
-        return getFormattedPhoneNumber(subscriptionInfo);
     }
 
     private CharSequence getPreferenceTitle(int simSlot) {
diff --git a/tests/unit/src/com/android/settings/deviceinfo/PhoneNumberPreferenceControllerTest.java b/tests/unit/src/com/android/settings/deviceinfo/PhoneNumberPreferenceControllerTest.java
index 9a5399c5f07..05e2f246dbd 100644
--- a/tests/unit/src/com/android/settings/deviceinfo/PhoneNumberPreferenceControllerTest.java
+++ b/tests/unit/src/com/android/settings/deviceinfo/PhoneNumberPreferenceControllerTest.java
@@ -37,6 +37,7 @@ import androidx.preference.PreferenceScreen;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
+import com.android.settings.R;
 import com.android.settings.testutils.ResourcesUtils;
 
 import org.junit.Before;
@@ -135,25 +136,23 @@ public class PhoneNumberPreferenceControllerTest {
     }
 
     @Test
-    public void getSummary_cannotGetActiveSubscriptionInfo_shouldShowUnknown() {
+    public void getSummary_cannotGetActiveSubscriptionInfo_shouldShowNotAvailable() {
         when(mSubscriptionManager.getActiveSubscriptionInfoList()).thenReturn(null);
         mController.displayPreference(mScreen);
 
         mController.updateState(mPreference);
 
-        verify(mPreference).setSummary(ResourcesUtils.getResourcesString(
-                mContext, "device_info_default"));
+        verify(mPreference).setSummary(mContext.getString(R.string.device_info_not_available));
     }
 
     @Test
-    public void getSummary_getEmptySubscriptionInfo_shouldShowUnknown() {
+    public void getSummary_getEmptySubscriptionInfo_shouldShowNotAvailable() {
         List<SubscriptionInfo> infos = new ArrayList<>();
         when(mSubscriptionManager.getActiveSubscriptionInfoList()).thenReturn(infos);
 
         mController.displayPreference(mScreen);
         mController.updateState(mPreference);
 
-        verify(mPreference).setSummary(ResourcesUtils.getResourcesString(
-                mContext, "device_info_default"));
+        verify(mPreference).setSummary(mContext.getString(R.string.device_info_not_available));
     }
 }