diff --git a/res/values/strings.xml b/res/values/strings.xml
index 3209da9..50a26c2 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -24,6 +24,8 @@
     <string name="allow">Allow</string>
     <!-- Strings for Dialog deny button -->
     <string name="deny">Deny</string>
+    <!-- Used in confirmation dialogs as the action that the user will tap to turn on the feature. [CHAR LIMIT=40]-->
+    <string name="confirmation_turn_on">Turn on</string>
 
     <!-- Device Info screen. Used for a status item's value when the proper value is not known -->
     <string name="device_info_default">Unknown</string>
@@ -6996,19 +6998,33 @@
     <string name="enhanced_4g_lte_mode_summary">Use LTE services to improve voice and other communications (recommended)</string>
     <!-- Enhaced 4G LTE Mode summary for 4g calling.  [CHAR LIMIT=100] -->
     <string name="enhanced_4g_lte_mode_summary_4g_calling">Use 4G services to improve voice and other communications (recommended)</string>
-    <!-- Title of a preference determining whether or not the user has enabled contact discovery,
-         which is a service that uses the phone numbers in your contacts to determine if your
+    <!-- Title of a preference determining whether or not the user has allowed the device to share
+         their contacts' phone numbers with their carrier in order to implement contact discovery,
+         which is a service that exchanges contacts with the carrier to determine if your
          contacts support advanced calling features, such as video calling. [CHAR LIMIT=50]-->
-    <string name="contact_discovery_opt_in_title">Contact discovery</string>
-    <!-- Summary of a preference determining whether or not the user has enabled contact discovery.
-         [CHAR LIMIT=110] -->
-    <string name="contact_discovery_opt_in_summary">Allows your carrier to discover which calling features your contacts support.</string>
-    <!-- Title of the dialog shown when the user tries to enable Contact Discovery.
+    <string name="contact_discovery_opt_in_title">Send contacts to carrier</string>
+    <!-- Summary of a preference determining whether or not the user has enabled contact discovery,
+         which is a service that exchanges contacts with the carrier to determine if your contacts
+         support enhanced features, such as video calling and RCS messaging. [CHAR LIMIT=110] -->
+    <string name="contact_discovery_opt_in_summary">Send your contacts\u2019 phone numbers to provide enhanced features</string>
+    <!-- Title of the dialog shown when the user tries to enable Contact Discovery, which is a
+         service that exchanges contacts with the carrier to determine if your contacts support
+         enhanced features, such as video calling and RCS messaging. [CHAR LIMIT=50] -->
+    <string name="contact_discovery_opt_in_dialog_title">Send contacts to <xliff:g id="carrier" example="T-mobile">%1$s</xliff:g>?</string>
+    <!-- Title of the dialog shown when the carrier name is not known and the user tries to enable
+         Contact Discovery, which is a service that exchanges contacts with the carrier to determine
+         if your contacts support enhanced features, such as video calling and RCS messaging.
          [CHAR LIMIT=50] -->
-    <string name="contact_discovery_opt_in_dialog_title">Enable contact discovery?</string>
-    <!-- Text displayed in the dialog shown when the user tries to enable Contact Discovery.
-         [CHAR LIMIT=NONE]-->
-    <string name="contact_discovery_opt_in_dialog_message">All of the phone numbers in your contacts will be periodically sent to your carrier in order to discover which calling features are supported.</string>
+    <string name="contact_discovery_opt_in_dialog_title_no_carrier_defined">Send contacts to your carrier?</string>
+    <!-- The text displayed in the dialog shown when the user tries to enable Contact Discovery,
+         which is a service that exchanges contacts with the carrier to determine if your contacts
+         support enhanced features, such as video calling and RCS messaging. [CHAR LIMIT=NONE]-->
+    <string name="contact_discovery_opt_in_dialog_message">Your contacts\u2019 phone numbers will be periodically sent to <xliff:g id="carrier" example="T-mobile">%1$s</xliff:g>.<xliff:g id="empty_line" example="  ">\n\n</xliff:g>This info identifies whether your contacts can use certain features, like video calls or some messaging features.</string>
+    <!-- The text displayed in the dialog shown when the mobile carrier's name is not known and the
+         user tries to enable Contact Discovery, which is a service that exchanges contacts with
+         the carrier to determine if your contacts support enhanced features, such as video calling
+         and RCS messaging. [CHAR LIMIT=NONE]-->
+    <string name="contact_discovery_opt_in_dialog_message_no_carrier_defined">Your contacts\u2019 phone numbers will be periodically sent to your carrier.<xliff:g id="empty_line" example="  ">\n\n</xliff:g>This info identifies whether your contacts can use certain features, like video calls or some messaging features.</string>
     <!-- Preferred network type title.  [CHAR LIMIT=50] -->
     <string name="preferred_network_type_title">Preferred network type</string>
     <!-- Preferred network type summary.  [CHAR LIMIT=100] -->
diff --git a/src/com/android/settings/network/telephony/CarrierSettingsVersionPreferenceController.java b/src/com/android/settings/network/telephony/CarrierSettingsVersionPreferenceController.java
index a6db773..aec3648 100644
--- a/src/com/android/settings/network/telephony/CarrierSettingsVersionPreferenceController.java
+++ b/src/com/android/settings/network/telephony/CarrierSettingsVersionPreferenceController.java
@@ -20,6 +20,7 @@
 import android.os.PersistableBundle;
 import android.telephony.CarrierConfigManager;
 import android.telephony.SubscriptionManager;
+import android.text.TextUtils;
 
 import com.android.settings.core.BasePreferenceController;
 
@@ -49,6 +50,6 @@
 
     @Override
     public int getAvailabilityStatus() {
-        return AVAILABLE;
+        return TextUtils.isEmpty(getSummary()) ? UNSUPPORTED_ON_DEVICE : AVAILABLE;
     }
 }
diff --git a/src/com/android/settings/network/telephony/ContactDiscoveryDialogFragment.java b/src/com/android/settings/network/telephony/ContactDiscoveryDialogFragment.java
index 7273010..26398d7 100644
--- a/src/com/android/settings/network/telephony/ContactDiscoveryDialogFragment.java
+++ b/src/com/android/settings/network/telephony/ContactDiscoveryDialogFragment.java
@@ -23,6 +23,7 @@
 import android.os.Bundle;
 import android.telephony.ims.ImsManager;
 import android.telephony.ims.ImsRcsManager;
+import android.text.TextUtils;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.fragment.app.FragmentManager;
@@ -39,9 +40,11 @@
         implements DialogInterface.OnClickListener {
 
     private static final String SUB_ID_KEY = "sub_id_key";
+    private static final String CARRIER_NAME_KEY = "carrier_name_key";
     private static final String DIALOG_TAG = "discovery_dialog:";
 
     private int mSubId;
+    private CharSequence mCarrierName;
     private ImsManager mImsManager;
 
     /**
@@ -50,10 +53,11 @@
      * @param subId The subscription ID to associate with this Dialog.
      * @return a new instance of ContactDiscoveryDialogFragment.
      */
-    public static ContactDiscoveryDialogFragment newInstance(int subId) {
+    public static ContactDiscoveryDialogFragment newInstance(int subId, CharSequence carrierName) {
         final ContactDiscoveryDialogFragment dialogFragment = new ContactDiscoveryDialogFragment();
         final Bundle args = new Bundle();
         args.putInt(SUB_ID_KEY, subId);
+        args.putCharSequence(CARRIER_NAME_KEY, carrierName);
         dialogFragment.setArguments(args);
 
         return dialogFragment;
@@ -64,18 +68,30 @@
         super.onAttach(context);
         final Bundle args = getArguments();
         mSubId = args.getInt(SUB_ID_KEY);
+        mCarrierName = args.getCharSequence(CARRIER_NAME_KEY);
         mImsManager = getImsManager(context);
     }
 
     @Override
     public Dialog onCreateDialog(Bundle savedInstanceState) {
         final AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
-        final int title = R.string.contact_discovery_opt_in_dialog_title;
-        int message = R.string.contact_discovery_opt_in_dialog_message;
-        builder.setMessage(getResources().getString(message))
+        CharSequence title;
+        CharSequence message;
+        if (!TextUtils.isEmpty(mCarrierName)) {
+            title = getContext().getString(
+                    R.string.contact_discovery_opt_in_dialog_title, mCarrierName);
+            message = getContext().getString(
+                    R.string.contact_discovery_opt_in_dialog_message, mCarrierName);
+        } else {
+            title = getContext().getString(
+                    R.string.contact_discovery_opt_in_dialog_title_no_carrier_defined);
+            message = getContext().getString(
+                    R.string.contact_discovery_opt_in_dialog_message_no_carrier_defined);
+        }
+        builder.setMessage(message)
                 .setTitle(title)
                 .setIconAttribute(android.R.attr.alertDialogIcon)
-                .setPositiveButton(android.R.string.ok, this)
+                .setPositiveButton(R.string.confirmation_turn_on, this)
                 .setNegativeButton(android.R.string.cancel, this);
         return builder.create();
     }
diff --git a/src/com/android/settings/network/telephony/ContactDiscoveryPreferenceController.java b/src/com/android/settings/network/telephony/ContactDiscoveryPreferenceController.java
index 21d49d9..880c444 100644
--- a/src/com/android/settings/network/telephony/ContactDiscoveryPreferenceController.java
+++ b/src/com/android/settings/network/telephony/ContactDiscoveryPreferenceController.java
@@ -22,6 +22,7 @@
 import android.os.PersistableBundle;
 import android.provider.Telephony;
 import android.telephony.CarrierConfigManager;
+import android.telephony.SubscriptionInfo;
 import android.telephony.ims.ImsManager;
 import android.util.Log;
 
@@ -34,6 +35,8 @@
 import androidx.preference.PreferenceScreen;
 import androidx.preference.SwitchPreference;
 
+import com.android.settings.network.SubscriptionUtil;
+
 
 /**
  * Controller for the "Contact Discovery" option present in MobileNetworkSettings.
@@ -130,7 +133,19 @@
 
     private void showContentDiscoveryDialog() {
         ContactDiscoveryDialogFragment dialog = ContactDiscoveryDialogFragment.newInstance(
-                mSubId);
+                mSubId, getCarrierDisplayName(preference.getContext()));
         dialog.show(mFragmentManager, ContactDiscoveryDialogFragment.getFragmentTag(mSubId));
     }
+
+    private CharSequence getCarrierDisplayName(Context context) {
+        CharSequence result = "";
+
+        for (SubscriptionInfo info : SubscriptionUtil.getAvailableSubscriptions(context)) {
+            if (mSubId == info.getSubscriptionId()) {
+                result = info.getDisplayName();
+                break;
+            }
+        }
+        return result;
+    }
 }
diff --git a/src/com/android/settings/network/telephony/MobileNetworkActivity.java b/src/com/android/settings/network/telephony/MobileNetworkActivity.java
index 16c5adc..90b73f8 100644
--- a/src/com/android/settings/network/telephony/MobileNetworkActivity.java
+++ b/src/com/android/settings/network/telephony/MobileNetworkActivity.java
@@ -205,16 +205,9 @@
         final Intent intent = getIntent();
         if (intent != null) {
             final int subId = intent.getIntExtra(Settings.EXTRA_SUB_ID, SUB_ID_NULL);
-            if (subId != SUB_ID_NULL) {
-                for (SubscriptionInfo subscription :
-                        SubscriptionUtil.getAvailableSubscriptions(this)) {
-                    if (subscription.getSubscriptionId() == subId) {
-                        return subscription;
-                    }
-                }
-            }
+            SubscriptionInfo info = getSubscriptionInfo(subId);
+            if (info != null) return info;
         }
-
         if (CollectionUtils.isEmpty(mSubscriptionInfos)) {
             return null;
         }
@@ -222,6 +215,23 @@
     }
 
     /**
+     * @return the subscription associated with a given subscription ID or null if none can be
+     * found.
+     */
+    SubscriptionInfo getSubscriptionInfo(int subId) {
+        if (subId == SUB_ID_NULL) {
+            return null;
+        }
+
+        for (SubscriptionInfo subscription : SubscriptionUtil.getAvailableSubscriptions(this)) {
+            if (subscription.getSubscriptionId() == subId) {
+                return subscription;
+            }
+        }
+        return null;
+    }
+
+    /**
      * Get the current subId to display.
      */
     @VisibleForTesting
@@ -340,6 +350,11 @@
     }
 
     private void maybeShowContactDiscoveryDialog(int subId) {
+        SubscriptionInfo info = getSubscriptionInfo(subId);
+        CharSequence carrierName = "";
+        if (info != null) {
+            carrierName = info.getDisplayName();
+        }
         // If this activity was launched using ACTION_SHOW_CAPABILITY_DISCOVERY_OPT_IN, show the
         // associated dialog only if the opt-in has not been granted yet.
         boolean showOptInDialog = doesIntentContainOptInAction(getIntent())
@@ -350,7 +365,7 @@
         ContactDiscoveryDialogFragment fragment = getContactDiscoveryFragment(subId);
         if (showOptInDialog) {
             if (fragment == null) {
-                fragment = ContactDiscoveryDialogFragment.newInstance(subId);
+                fragment = ContactDiscoveryDialogFragment.newInstance(subId, carrierName);
             }
             // Only try to show the dialog if it has not already been added, otherwise we may
             // accidentally add it multiple times, causing multiple dialogs.
diff --git a/tests/robotests/src/com/android/settings/network/telephony/ContactDiscoveryDialogFragmentTest.java b/tests/robotests/src/com/android/settings/network/telephony/ContactDiscoveryDialogFragmentTest.java
index 6aef699..f2db71f 100644
--- a/tests/robotests/src/com/android/settings/network/telephony/ContactDiscoveryDialogFragmentTest.java
+++ b/tests/robotests/src/com/android/settings/network/telephony/ContactDiscoveryDialogFragmentTest.java
@@ -48,6 +48,7 @@
 @Config(shadows = ShadowAlertDialog.class)
 public class ContactDiscoveryDialogFragmentTest {
     private static final int TEST_SUB_ID = 2;
+    private static final String TEST_CARRIER = "TestMobile";
 
     @Mock private ImsManager mImsManager;
     @Mock private ImsRcsManager mImsRcsManager;
@@ -60,7 +61,8 @@
     public void setUp() {
         MockitoAnnotations.initMocks(this);
         mActivity = Robolectric.buildActivity(FragmentActivity.class).setup().get();
-        mDialogFragmentUT = spy(ContactDiscoveryDialogFragment.newInstance(TEST_SUB_ID));
+        mDialogFragmentUT = spy(ContactDiscoveryDialogFragment.newInstance(TEST_SUB_ID,
+                TEST_CARRIER));
         doReturn(mImsManager).when(mDialogFragmentUT).getImsManager(any());
         doReturn(mImsRcsManager).when(mImsManager).getImsRcsManager(TEST_SUB_ID);
         doReturn(mRcsUceAdapter).when(mImsRcsManager).getUceAdapter();
diff --git a/tests/robotests/src/com/android/settings/network/telephony/ContactDiscoveryPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/network/telephony/ContactDiscoveryPreferenceControllerTest.java
index 0370bfa..3d54cfb 100644
--- a/tests/robotests/src/com/android/settings/network/telephony/ContactDiscoveryPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/network/telephony/ContactDiscoveryPreferenceControllerTest.java
@@ -48,6 +48,7 @@
 import androidx.lifecycle.LifecycleOwner;
 import androidx.preference.SwitchPreference;
 
+import com.android.settings.network.SubscriptionUtil;
 import com.android.settingslib.core.lifecycle.Lifecycle;
 
 import org.junit.Before;
@@ -59,6 +60,8 @@
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 
+import java.util.Collections;
+
 @RunWith(RobolectricTestRunner.class)
 public class ContactDiscoveryPreferenceControllerTest {
 
@@ -99,6 +102,8 @@
 
         mPreferenceControllerUT = new ContactDiscoveryPreferenceController(mContext,
                 "ContactDiscovery");
+        // Ensure subscriptionInfo check doesn't fail.
+        SubscriptionUtil.setAvailableSubscriptionsForTesting(Collections.emptyList());
         mPreferenceControllerUT.init(mFragmentManager, TEST_SUB_ID, mLifecycle);
         mSwitchPreferenceUT = spy(new SwitchPreference(mContext));
         mSwitchPreferenceUT.setKey(mPreferenceControllerUT.getPreferenceKey());