diff --git a/res/layout/notif_priority_conversation_preference.xml b/res/layout/notif_priority_conversation_preference.xml
index 981cd693cfc..f68dbdef8ff 100644
--- a/res/layout/notif_priority_conversation_preference.xml
+++ b/res/layout/notif_priority_conversation_preference.xml
@@ -61,7 +61,7 @@
             android:clickable="false"
             android:focusable="false"
             android:ellipsize="end"
-            android:maxLines="2"
+            android:maxLines="3"
             android:layout_below="@id/priority_icon"
             android:textAppearance="@style/TextAppearance.NotificationImportanceDetail"
             android:visibility="gone" />
@@ -143,7 +143,7 @@
         <TextView
             android:id="@+id/silence_summary"
             android:paddingTop="@dimen/notification_importance_button_padding"
-            android:text="@string/notification_channel_summary_low"
+            android:text="@string/notification_conversation_summary_low"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:clickable="false"
diff --git a/res/layout/notification_history.xml b/res/layout/notification_history.xml
index 3d6edd59cec..3cbe0364374 100644
--- a/res/layout/notification_history.xml
+++ b/res/layout/notification_history.xml
@@ -136,12 +136,12 @@
                     android:layout_width="wrap_content"
                     android:text="@string/notification_history_snooze"
                     android:textColor="?android:attr/textColorPrimary"
-                    android:textAppearance="?android:attr/textAppearanceMedium"
+                    android:textAppearance="@style/TextAppearance.HomepageCardTitle"
                     android:paddingBottom="16dp" />
 
                     <androidx.recyclerview.widget.RecyclerView
                         android:id="@+id/notification_list"
-                        android:elevation="3dp"
+                        android:elevation="1dp"
                         android:background="@drawable/rounded_bg"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
@@ -161,11 +161,11 @@
                     android:layout_width="wrap_content"
                     android:text="@string/notification_history_dismiss"
                     android:textColor="?android:attr/textColorPrimary"
-                    android:textAppearance="?android:attr/textAppearanceMedium"
+                    android:textAppearance="@style/TextAppearance.HomepageCardTitle"
                     android:paddingBottom="16dp" />
                 <androidx.recyclerview.widget.RecyclerView
                         android:id="@+id/notification_list"
-                        android:elevation="3dp"
+                        android:elevation="1dp"
                         android:background="@drawable/rounded_bg"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
@@ -183,19 +183,18 @@
                     android:layout_width="wrap_content"
                     android:text="@string/notification_history_today"
                     android:textColor="?android:attr/textColorPrimary"
-                    android:textAppearance="?android:attr/textAppearanceMedium"
+                    android:textAppearance="@style/TextAppearance.HomepageCardTitle"
                     android:paddingBottom="16dp" />
                 <LinearLayout
                     android:id="@+id/apps"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:elevation="3dp"
+                    android:elevation="1dp"
                     android:orientation="vertical"
                     android:background="@drawable/rounded_bg">
                     <!-- app based recycler views added here -->
                 </LinearLayout>
             </LinearLayout>
         </LinearLayout>
-
     </LinearLayout>
 </androidx.core.widget.NestedScrollView>
\ No newline at end of file
diff --git a/res/layout/notification_history_app_layout.xml b/res/layout/notification_history_app_layout.xml
index e8d33166c9d..a1b3be79082 100644
--- a/res/layout/notification_history_app_layout.xml
+++ b/res/layout/notification_history_app_layout.xml
@@ -78,6 +78,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:clipChildren="true"
+            android:clipToPadding="true"
             android:importantForAccessibility="yes"
             android:scrollbars="none"/>
 
diff --git a/res/layout/notification_history_log_row.xml b/res/layout/notification_history_log_row.xml
index ab5e29d4ff0..4f45fecd0ae 100644
--- a/res/layout/notification_history_log_row.xml
+++ b/res/layout/notification_history_log_row.xml
@@ -17,12 +17,13 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:minHeight="48dp"
-    android:paddingBottom="6dp"
-    android:paddingTop="6dp"
+    android:paddingTop="16dp"
+    android:paddingBottom="16dp"
     android:paddingStart="?android:attr/listPreferredItemPaddingStart"
     android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
     android:orientation="vertical"
-    android:background="?android:attr/selectableItemBackground">
+    android:background="?android:attr/colorBackgroundFloating"
+    android:foreground="?android:attr/selectableItemBackground">
 
     <LinearLayout
         android:layout_width="match_parent"
@@ -38,7 +39,7 @@
             android:layout_centerVertical="true"
             android:ellipsize="end"
             android:singleLine="true"
-            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Notification.Title"
+            android:textAppearance="@style/TextAppearance.NotificationHistory.Title"
             android:layout_toStartOf="@id/alerted_icon"
             android:textAlignment="viewStart"/>
 
@@ -64,7 +65,7 @@
             android:layout_centerVertical="true"
             android:ellipsize="end"
             android:singleLine="true"
-            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Notification"
+            android:textAppearance="@style/TextAppearance.NotificationHistory.AppName"
             android:textAlignment="viewEnd"
         />
     </LinearLayout>
@@ -77,7 +78,7 @@
         android:ellipsize="end"
         android:singleLine="true"
         android:paddingTop="3dp"
-        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Notification"
+        android:textAppearance="@style/TextAppearance.NotificationHistory.Text"
         android:textAlignment="viewStart" />
 
 </LinearLayout>
diff --git a/res/layout/notification_sbn_log_row.xml b/res/layout/notification_sbn_log_row.xml
index 049e940532c..a5b8dd0fde7 100644
--- a/res/layout/notification_sbn_log_row.xml
+++ b/res/layout/notification_sbn_log_row.xml
@@ -16,18 +16,17 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
               android:layout_width="match_parent"
               android:layout_height="wrap_content"
-              android:paddingTop="6dp"
               android:minHeight="48dp"
               android:orientation="vertical"
-              android:background="?android:attr/selectableItemBackground"
->
-    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:background="?android:attr/selectableItemBackground">
+    <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:paddingStart="?android:attr/listPreferredItemPaddingStart"
         android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
-        android:orientation="vertical"
-        >
+        android:paddingTop="16dp"
+        android:paddingBottom="16dp"
+        android:orientation="vertical">
 
         <LinearLayout
             android:layout_width="match_parent"
@@ -56,10 +55,9 @@
                 android:ellipsize="end"
                 android:singleLine="true"
                 android:textColor="?android:attr/textColorPrimary"
-                android:textAppearance="?android:attr/textAppearanceSmall"
+                android:textAppearance="@style/TextAppearance.NotificationHistory.AppName"
                 android:marqueeRepeatLimit = "marquee_forever"
                 android:scrollHorizontally = "true"
-                android:textStyle="bold"
                 android:textAlignment="viewStart" />
 
             <ImageView
@@ -98,7 +96,7 @@
                 android:layout_centerVertical="true"
                 android:ellipsize="end"
                 android:singleLine="true"
-                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Notification"
+                android:textAppearance="@style/TextAppearance.NotificationHistory.AppName"
                 android:textAlignment="viewEnd"
                 />
         </LinearLayout>
@@ -107,7 +105,6 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="vertical"
-            android:layout_marginStart="30dp"
             android:layout_marginBottom="6dp"
             >
 
@@ -118,7 +115,7 @@
                 android:layout_gravity="left|center_vertical"
                 android:ellipsize="end"
                 android:singleLine="true"
-                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Notification.Title"
+                android:textAppearance="@style/TextAppearance.NotificationHistory.Title"
                 android:textAlignment="viewStart"
             />
 
@@ -129,7 +126,7 @@
                 android:layout_gravity="left|center_vertical"
                 android:ellipsize="end"
                 android:singleLine="true"
-                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Notification"
+                android:textAppearance="@style/TextAppearance.NotificationHistory.Text"
                 android:textAlignment="viewStart"
             />
 
@@ -140,6 +137,5 @@
         android:id="@+id/divider"
         android:layout_width="match_parent"
         android:layout_height="0.5dp"
-        android:layout_marginTop="17dp"
         android:background="@color/material_grey_300" />
 </LinearLayout>
\ No newline at end of file
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 9faceacab4c..812ff86e20e 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -8301,17 +8301,17 @@
 
 
     <!-- Configure notifications: Title for determining which notifications appear on the lock screen [CHAR LIMIT=60] -->
-    <string name="lock_screen_notifs_title">Notifications on lockscreen</string>
+    <string name="lock_screen_notifs_title">Notifications on lock screen</string>
 
     <!-- Configure notifications: Value for lockscreen notifications: all notifications shown
     regardless of noisiness [CHAR LIMIT=60] -->
-    <string name="lock_screen_notifs_show_all">Show alerting and silent notifications</string>
+    <string name="lock_screen_notifs_show_all">Show conversations, default, and silent</string>
 
     <!-- Configure notifications: Value for lockscreen notifications: show alerting notifications [CHAR LIMIT=60] -->
-    <string name="lock_screen_notifs_show_alerting">Show alerting notifications only</string>
+    <string name="lock_screen_notifs_show_alerting">Hide silent conversations and notifications</string>
 
     <!-- Configure notifications: Value for lockscreen notifications: don't show notifications [CHAR LIMIT=60] -->
-    <string name="lock_screen_notifs_show_none">Don\u2019t show notifications</string>
+    <string name="lock_screen_notifs_show_none">Don\u2019t show any notifications</string>
 
     <!-- Configure notifications: Title for redacting sensitive content on lockscreen [CHAR LIMIT=60] -->
     <string name="lock_screen_notifs_redact">Sensitive notifications</string>
@@ -8395,7 +8395,7 @@
     <string name="conversation_section_switch_title">Conversation section</string>
 
     <!-- [CHAR LIMIT=100] Summary for switch that says whether this app can appear in the conversation notification section-->
-    <string name="conversation_section_switch_summary">Allow <xliff:g id="app">%1$s</xliff:g> to appear in the conversation section</string>
+    <string name="conversation_section_switch_summary">Allow app to use conversation section</string>
 
     <!-- [CHAR LIMIT=NONE] Conversation preference summary, the parent channel this conversation was spawned from (separator) the parent channel group (e.g. an account name)-->
     <string name="notification_conversation_summary" translatable="false">"<xliff:g id="parent_category_name">%1$s</xliff:g> • <xliff:g id="parent_category_group_name">%2$s</xliff:g>"</string>
@@ -8434,7 +8434,7 @@
     <string name="important_conversations_summary">Show at top of conversation section</string>
 
     <!-- [CHAR LIMIT=100] preference category title -->
-    <string name="other_conversations">Modified conversations</string>
+    <string name="other_conversations">Other conversations</string>
 
     <!-- summary for other conversations list -->
     <string name="other_conversations_summary">Conversations you\u2019ve made changes to</string>
@@ -8494,7 +8494,7 @@
     <string name="notification_silence_title">Silent</string>
 
     <!-- [CHAR LIMIT=100] Notification Importance title -->
-    <string name="notification_alert_title">Alerting</string>
+    <string name="notification_alert_title">Default</string>
 
     <!-- [CHAR LIMIT=40] Notification importance title. This setting controls how notifications in older apps may alert the user (eg, sound, visual, vibrate). -->
     <string name="allow_interruption">Allow interruptions</string>
@@ -8506,9 +8506,9 @@
     <string name="notification_priority_title">Priority</string>
 
     <!-- [CHAR LIMIT=150] Notification Importance title: important conversation level summary -->
-    <string name="notification_channel_summary_priority">Shows at top of conversation section and appears as a bubble</string>
+    <string name="notification_channel_summary_priority">Shows at top of conversation section, appears as floating bubble, displays profile picture on lock screen</string>
 
-    <string name="convo_not_supported_summary"><xliff:g id="app_name" example="Android Services">%1$s</xliff:g> does not support conversation-specific settings.</string>
+    <string name="convo_not_supported_summary"><xliff:g id="app_name" example="Android Services">%1$s</xliff:g> doesn\u2019t support most conversation features. You can’t set a conversation as priority, and conversations won’t appear as floating bubbles.</string>
 
     <!-- Channel summaries for the app notification page -->
 
@@ -8516,10 +8516,13 @@
     <string name="notification_channel_summary_min">In the pull-down shade, collapse notifications to one line</string>
 
     <!-- [CHAR LIMIT=150] Notification Importance title: low importance level summary -->
-    <string name="notification_channel_summary_low">Helps you focus without sound or vibration</string>
+    <string name="notification_channel_summary_low">No sound or vibration</string>
+
+    <!-- [CHAR LIMIT=150] Notification Importance title: low importance level summary -->
+    <string name="notification_conversation_summary_low">No sound or vibration and appears lower in conversation section</string>
 
     <!-- [CHAR LIMIT=150] Notification Importance title: normal importance level summary -->
-    <string name="notification_channel_summary_default">Gets your attention with sound or vibration</string>
+    <string name="notification_channel_summary_default">May ring or vibrate based on phone settings</string>
 
     <!-- [CHAR LIMIT=150] Notification Importance title: high importance level summary -->
     <string name="notification_channel_summary_high">When device is unlocked, show notifications as a banner across the top of the screen</string>
@@ -8850,7 +8853,7 @@
     <string name="notification_channel_sound_title">Sound</string>
 
     <!-- [CHAR LIMIT=180] Notification conversation: important -->
-    <string name="notification_conversation_important">Important</string>
+    <string name="notification_conversation_important">Priority</string>
 
     <!-- [CHAR LIMIT=180] Notification conversation: add to home screen -->
     <string name="notification_conversation_add_to_home">Add to home</string>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 98f340c49ed..2fd0afbfa62 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -334,6 +334,24 @@
         <item name="android:padding">8dp</item>
     </style>
 
+    <style name="TextAppearance.NotificationHistory">
+        <item name="android:textSize">14sp</item>
+    </style>
+
+    <style name="TextAppearance.NotificationHistory.AppName">
+        <item name="android:fontFamily">@*android:string/config_bodyFontFamily</item>
+        <item name="android:textSize">12sp</item>
+    </style>
+
+    <style name="TextAppearance.NotificationHistory.Title">
+        <item name="android:fontFamily">@*android:string/config_headlineFontFamily</item>
+    </style>
+
+    <style name="TextAppearance.NotificationHistory.Text">
+        <item name="android:fontFamily">@*android:string/config_headlineFontFamily</item>
+        <item name="android:textColor">?android:attr/textColorSecondary</item>
+    </style>
+
     <style name="TextAppearance.ContextualCardDismissalText"
            parent="@*android:style/TextAppearance.DeviceDefault.Body1">
         <item name="android:fontFamily">@*android:string/config_headlineFontFamilyMedium</item>
diff --git a/src/com/android/settings/notification/app/AllConversationsPreferenceController.java b/src/com/android/settings/notification/app/AllConversationsPreferenceController.java
index 8a0d7b8a18d..4b28b111024 100644
--- a/src/com/android/settings/notification/app/AllConversationsPreferenceController.java
+++ b/src/com/android/settings/notification/app/AllConversationsPreferenceController.java
@@ -23,6 +23,7 @@ import android.service.notification.ConversationChannelWrapper;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceCategory;
 
+import com.android.settings.R;
 import com.android.settings.notification.NotificationBackend;
 
 import java.util.Collections;
@@ -49,6 +50,14 @@ public class AllConversationsPreferenceController extends ConversationListPrefer
         return true;
     }
 
+    @Override
+    Preference getSummaryPreference() {
+        Preference pref = new Preference(mContext);
+        pref.setOrder(1);
+        pref.setSummary(R.string.other_conversations_summary);
+        return pref;
+    }
+
     @Override
     boolean matchesFilter(ConversationChannelWrapper conversation) {
         return !conversation.getNotificationChannel().isImportantConversation();
diff --git a/src/com/android/settings/notification/app/ConversationListPreferenceController.java b/src/com/android/settings/notification/app/ConversationListPreferenceController.java
index 57cbe6a4ad7..afb965f2477 100644
--- a/src/com/android/settings/notification/app/ConversationListPreferenceController.java
+++ b/src/com/android/settings/notification/app/ConversationListPreferenceController.java
@@ -73,24 +73,33 @@ public abstract class ConversationListPreferenceController extends AbstractPrefe
             containerGroup.setVisible(false);
         } else {
             containerGroup.setVisible(true);
+            Preference summaryPref = getSummaryPreference();
+            if (summaryPref != null) {
+                containerGroup.addPreference(summaryPref);
+            }
         }
     }
 
+    abstract Preference getSummaryPreference();
+
     abstract boolean matchesFilter(ConversationChannelWrapper conversation);
 
     protected void populateConversations(List<ConversationChannelWrapper> conversations,
             PreferenceGroup containerGroup) {
+        int order = 100;
         for (ConversationChannelWrapper conversation : conversations) {
             if (conversation.getNotificationChannel().isDemoted()
                     || !matchesFilter(conversation)) {
                 continue;
             }
-            containerGroup.addPreference(createConversationPref(conversation));
+            containerGroup.addPreference(createConversationPref(conversation, order++));
         }
     }
 
-    protected Preference createConversationPref(final ConversationChannelWrapper conversation) {
+    protected Preference createConversationPref(final ConversationChannelWrapper conversation,
+            int order) {
         Preference pref = new Preference(mContext);
+        pref.setOrder(order);
 
         pref.setTitle(getTitle(conversation));
         pref.setSummary(getSummary(conversation));
diff --git a/src/com/android/settings/notification/app/InvalidConversationPreferenceController.java b/src/com/android/settings/notification/app/InvalidConversationPreferenceController.java
index 74f5773efda..cf66474afc8 100644
--- a/src/com/android/settings/notification/app/InvalidConversationPreferenceController.java
+++ b/src/com/android/settings/notification/app/InvalidConversationPreferenceController.java
@@ -59,8 +59,7 @@ public class InvalidConversationPreferenceController extends NotificationPrefere
         pref.setDisabledByAdmin(mAdmin);
         pref.setEnabled(!pref.isDisabledByAdmin());
         pref.setChecked(!mBackend.hasUserDemotedInvalidMsgApp(mAppRow.pkg, mAppRow.uid));
-        preference.setSummary(mContext.getString(
-                R.string.conversation_section_switch_summary, mAppRow.label));
+        preference.setSummary(mContext.getString(R.string.conversation_section_switch_summary));
     }
 
     @Override
diff --git a/src/com/android/settings/notification/app/NoConversationsPreferenceController.java b/src/com/android/settings/notification/app/NoConversationsPreferenceController.java
index 7b626f6a631..40faadcaec6 100644
--- a/src/com/android/settings/notification/app/NoConversationsPreferenceController.java
+++ b/src/com/android/settings/notification/app/NoConversationsPreferenceController.java
@@ -50,6 +50,11 @@ public class NoConversationsPreferenceController extends ConversationListPrefere
         return true;
     }
 
+    @Override
+    Preference getSummaryPreference() {
+        return null;
+    }
+
     @Override
     boolean matchesFilter(ConversationChannelWrapper conversation) {
         return false;
diff --git a/src/com/android/settings/notification/app/PriorityConversationsPreferenceController.java b/src/com/android/settings/notification/app/PriorityConversationsPreferenceController.java
index ae20d12d945..5533912d85b 100644
--- a/src/com/android/settings/notification/app/PriorityConversationsPreferenceController.java
+++ b/src/com/android/settings/notification/app/PriorityConversationsPreferenceController.java
@@ -23,6 +23,7 @@ import android.service.notification.ConversationChannelWrapper;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceCategory;
 
+import com.android.settings.R;
 import com.android.settings.notification.NotificationBackend;
 
 import java.util.Collections;
@@ -49,6 +50,14 @@ public class PriorityConversationsPreferenceController extends
         return true;
     }
 
+    @Override
+    Preference getSummaryPreference() {
+        Preference pref = new Preference(mContext);
+        pref.setOrder(1);
+        pref.setSummary(R.string.important_conversations_summary_bubbles);
+        return pref;
+    }
+
     @Override
     boolean matchesFilter(ConversationChannelWrapper conversation) {
         return conversation.getNotificationChannel().isImportantConversation();
diff --git a/src/com/android/settings/notification/history/NotificationHistoryActivity.java b/src/com/android/settings/notification/history/NotificationHistoryActivity.java
index ab0a8d79a7b..1e5e21e4919 100644
--- a/src/com/android/settings/notification/history/NotificationHistoryActivity.java
+++ b/src/com/android/settings/notification/history/NotificationHistoryActivity.java
@@ -20,6 +20,7 @@ import static android.provider.Settings.Secure.NOTIFICATION_HISTORY_ENABLED;
 
 import static androidx.core.view.accessibility.AccessibilityEventCompat.TYPE_VIEW_ACCESSIBILITY_FOCUSED;
 
+import android.app.ActionBar;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.INotificationManager;
@@ -27,6 +28,8 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.content.res.TypedArray;
+import android.graphics.Outline;
 import android.os.Bundle;
 import android.os.RemoteException;
 import android.os.ServiceManager;
@@ -37,9 +40,11 @@ import android.service.notification.NotificationListenerService;
 import android.service.notification.StatusBarNotification;
 import android.util.Log;
 import android.util.Slog;
+import android.util.TypedValue;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.ViewOutlineProvider;
 import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.TextView;
@@ -82,6 +87,23 @@ public class NotificationHistoryActivity extends Activity {
         findViewById(R.id.today_list).setVisibility(
                 notifications.isEmpty() ? View.GONE : View.VISIBLE);
         mCountdownLatch.countDown();
+        mTodayView.setClipToOutline(true);
+        mTodayView.setOutlineProvider(new ViewOutlineProvider() {
+            @Override
+            public void getOutline(View view, Outline outline) {
+                final TypedArray ta = NotificationHistoryActivity.this.obtainStyledAttributes(
+                        new int[]{android.R.attr.dialogCornerRadius});
+                final float dialogCornerRadius = ta.getDimension(0, 0);
+                ta.recycle();
+                TypedValue v = new TypedValue();
+                NotificationHistoryActivity.this.getTheme().resolveAttribute(
+                        com.android.internal.R.attr.listDivider, v, true);
+                int bottomPadding = NotificationHistoryActivity.this.getDrawable(v.resourceId)
+                        .getIntrinsicHeight();
+                outline.setRoundRect(0, 0, view.getWidth(), (view.getHeight() - bottomPadding),
+                        dialogCornerRadius);
+            }
+        });
         // for each package, new header and recycler view
         for (NotificationHistoryPackage nhp : notifications) {
             View viewForPackage = LayoutInflater.from(this)
@@ -138,6 +160,13 @@ public class NotificationHistoryActivity extends Activity {
         mHistoryOn = findViewById(R.id.history_on);
         mHistoryEmpty = findViewById(R.id.history_on_empty);
         mSwitchBar = findViewById(R.id.switch_bar);
+
+        ActionBar actionBar = getActionBar();
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(true);
+            actionBar.setHomeButtonEnabled(true);
+            actionBar.setDisplayShowTitleEnabled(true);
+        }
     }
 
     @Override
@@ -200,6 +229,12 @@ public class NotificationHistoryActivity extends Activity {
         super.onDestroy();
     }
 
+    @Override
+    public boolean onNavigateUp() {
+        finish();
+        return true;
+    }
+
     private void bindSwitch() {
         if (mSwitchBar != null) {
             mSwitchBar.setSwitchBarText(R.string.notification_history_toggle,
diff --git a/src/com/android/settings/notification/history/NotificationHistoryRecyclerView.java b/src/com/android/settings/notification/history/NotificationHistoryRecyclerView.java
index 6f6deb073fe..5a6ff7e781d 100644
--- a/src/com/android/settings/notification/history/NotificationHistoryRecyclerView.java
+++ b/src/com/android/settings/notification/history/NotificationHistoryRecyclerView.java
@@ -2,10 +2,7 @@ package com.android.settings.notification.history;
 
 import android.annotation.Nullable;
 import android.content.Context;
-import android.graphics.Canvas;
-import android.graphics.Rect;
 import android.util.AttributeSet;
-import android.view.View;
 
 import androidx.recyclerview.widget.DividerItemDecoration;
 import androidx.recyclerview.widget.ItemTouchHelper;
@@ -26,7 +23,8 @@ public class NotificationHistoryRecyclerView extends RecyclerView {
         this(context, attrs, 0);
     }
 
-    public NotificationHistoryRecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
+    public NotificationHistoryRecyclerView(Context context, @Nullable AttributeSet attrs,
+            int defStyle) {
         super(context, attrs, defStyle);
 
         setLayoutManager(new LinearLayoutManager(getContext()));
diff --git a/tests/robotests/src/com/android/settings/notification/app/ConversationListPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/notification/app/ConversationListPreferenceControllerTest.java
index 8672afb0617..6714031e73a 100644
--- a/tests/robotests/src/com/android/settings/notification/app/ConversationListPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/notification/app/ConversationListPreferenceControllerTest.java
@@ -34,6 +34,7 @@ import android.os.Bundle;
 import android.provider.Settings;
 import android.service.notification.ConversationChannelWrapper;
 
+import androidx.preference.Preference;
 import androidx.preference.PreferenceCategory;
 import androidx.preference.PreferenceManager;
 import androidx.preference.PreferenceScreen;
@@ -225,5 +226,10 @@ public class ConversationListPreferenceControllerTest {
         public String getPreferenceKey() {
             return "test";
         }
+
+        @Override
+        Preference getSummaryPreference() {
+            return null;
+        }
     }
 }