diff --git a/packages/SystemUI/res/layout/global_actions_change_panel.xml b/packages/SystemUI/res/layout/global_actions_change_panel.xml
new file mode 100644
index 0000000000000..dffb0f011bb5d
--- /dev/null
+++ b/packages/SystemUI/res/layout/global_actions_change_panel.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<ImageView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/global_actions_change_button"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"/>
diff --git a/packages/SystemUI/res/layout/global_actions_grid_lite.xml b/packages/SystemUI/res/layout/global_actions_grid_lite.xml
index 2430eec776781..5588fd391681e 100644
--- a/packages/SystemUI/res/layout/global_actions_grid_lite.xml
+++ b/packages/SystemUI/res/layout/global_actions_grid_lite.xml
@@ -13,13 +13,12 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<LinearLayout
+<androidx.constraintlayout.widget.ConstraintLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/global_actions_container"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:orientation="vertical"
     android:gravity="center"
     android:layout_gravity="center">
   <com.android.systemui.globalactions.GlobalActionsLayoutLite
@@ -29,8 +28,11 @@
       android:orientation="vertical"
       android:clipChildren="false"
       android:clipToPadding="false"
-      android:background="@drawable/global_actions_lite_background"
-      android:padding="@dimen/global_actions_lite_padding">
+      app:layout_constraintBottom_toBottomOf="parent"
+      app:layout_constraintTop_toTopOf="parent"
+      app:layout_constraintStart_toStartOf="parent"
+      app:layout_constraintEnd_toEndOf="parent"
+      android:layout_weight="1">
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
@@ -38,6 +40,8 @@
         android:gravity="center"
         android:translationZ="@dimen/global_actions_translate"
         android:orientation="horizontal"
+        android:background="@drawable/global_actions_lite_background"
+        android:padding="@dimen/global_actions_lite_padding"
         android:layoutDirection="ltr">
       <androidx.constraintlayout.helper.widget.Flow
           android:id="@+id/list_flow"
@@ -53,4 +57,4 @@
           app:flow_horizontalStyle="packed"/>
     </androidx.constraintlayout.widget.ConstraintLayout>
   </com.android.systemui.globalactions.GlobalActionsLayoutLite>
-</LinearLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/packages/SystemUI/res/values/config.xml b/packages/SystemUI/res/values/config.xml
index be9065b2c13b2..119507b67e9ad 100644
--- a/packages/SystemUI/res/values/config.xml
+++ b/packages/SystemUI/res/values/config.xml
@@ -603,6 +603,8 @@
 
     <!-- Whether wallet view is shown in landscape / seascape orientations -->
     <bool name="global_actions_show_landscape_wallet_view">false</bool>
+    <!-- Whether global actions should show an informational message about changes in S -->
+    <bool name="global_actions_show_change_info">false</bool>
 
     <!-- Package name of the preferred system app to perform eSOS action -->
     <string name="config_preferredEmergencySosPackage" translatable="false"></string>
diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
index 5c1e9355b6501..ab606babe804d 100644
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -1106,6 +1106,7 @@
     <dimen name="global_actions_button_padding">38dp</dimen>
     <dimen name="global_actions_corner_radius">28dp</dimen>
     <dimen name="global_actions_lite_padding">24dp</dimen>
+    <dimen name="global_actions_info_margin">32dp</dimen>
 
     <!-- The maximum offset in either direction that elements are moved horizontally to prevent
          burn-in on AOD. -->
diff --git a/packages/SystemUI/res/values/strings.xml b/packages/SystemUI/res/values/strings.xml
index db3fae6fa491c..e2a49a1a7b2b5 100644
--- a/packages/SystemUI/res/values/strings.xml
+++ b/packages/SystemUI/res/values/strings.xml
@@ -2966,4 +2966,7 @@
 
     <!-- Content description for a chip in the status bar showing that the user is currently on a phone call. [CHAR LIMIT=NONE] -->
     <string name="ongoing_phone_call_content_description">Ongoing phone call</string>
+
+    <!-- URL for more information about changes in global actions -->
+    <string name="global_actions_change_url" translatable="false"></string>
 </resources>
diff --git a/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialog.java b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialog.java
index 3873c25f32c64..dfd85fe4dc90d 100644
--- a/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialog.java
+++ b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialog.java
@@ -151,6 +151,7 @@ public class GlobalActionsDialog extends GlobalActionsDialogLite
                 iWindowManager,
                 backgroundExecutor,
                 uiEventLogger,
+                null,
                 ringerModeTracker, sysUiState, handler);
 
         mLockPatternUtils = lockPatternUtils;
@@ -298,7 +299,7 @@ public class GlobalActionsDialog extends GlobalActionsDialogLite
             super(context, com.android.systemui.R.style.Theme_SystemUI_Dialog_GlobalActions,
                     adapter, overflowAdapter, depthController, sysuiColorExtractor,
                     statusBarService, notificationShadeWindowController, sysuiState,
-                    onRotateCallback, keyguardShowing, powerAdapter, uiEventLogger);
+                    onRotateCallback, keyguardShowing, powerAdapter, uiEventLogger, null);
             mWalletFactory = walletFactory;
 
             // Update window attributes
diff --git a/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialogLite.java b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialogLite.java
index f9bb35fcb723b..8e152830e2089 100644
--- a/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialogLite.java
+++ b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialogLite.java
@@ -188,6 +188,7 @@ public class GlobalActionsDialogLite implements DialogInterface.OnDismissListene
     private final UiEventLogger mUiEventLogger;
     private final NotificationShadeDepthController mDepthController;
     private final SysUiState mSysUiState;
+    private final GlobalActionsInfoProvider mInfoProvider;
 
     // Used for RingerModeTracker
     private final LifecycleRegistry mLifecycle = new LifecycleRegistry(this);
@@ -320,6 +321,7 @@ public class GlobalActionsDialogLite implements DialogInterface.OnDismissListene
             IWindowManager iWindowManager,
             @Background Executor backgroundExecutor,
             UiEventLogger uiEventLogger,
+            GlobalActionsInfoProvider infoProvider,
             RingerModeTracker ringerModeTracker, SysUiState sysUiState, @Main Handler handler) {
         mContext = context;
         mWindowManagerFuncs = windowManagerFuncs;
@@ -339,6 +341,7 @@ public class GlobalActionsDialogLite implements DialogInterface.OnDismissListene
         mTelecomManager = telecomManager;
         mMetricsLogger = metricsLogger;
         mUiEventLogger = uiEventLogger;
+        mInfoProvider = infoProvider;
         mDepthController = depthController;
         mSysuiColorExtractor = colorExtractor;
         mStatusBarService = statusBarService;
@@ -621,7 +624,8 @@ public class GlobalActionsDialogLite implements DialogInterface.OnDismissListene
                 mAdapter, mOverflowAdapter,
                 mDepthController, mSysuiColorExtractor,
                 mStatusBarService, mNotificationShadeWindowController,
-                mSysUiState, this::onRotate, mKeyguardShowing, mPowerAdapter, mUiEventLogger);
+                mSysUiState, this::onRotate, mKeyguardShowing, mPowerAdapter, mUiEventLogger,
+                mInfoProvider);
 
         dialog.setOnDismissListener(this);
         dialog.setOnShowListener(this);
@@ -2095,6 +2099,7 @@ public class GlobalActionsDialogLite implements DialogInterface.OnDismissListene
         private Dialog mPowerOptionsDialog;
         protected final Runnable mOnRotateCallback;
         private UiEventLogger mUiEventLogger;
+        private GlobalActionsInfoProvider mInfoProvider;
 
         protected ViewGroup mContainer;
 
@@ -2104,7 +2109,8 @@ public class GlobalActionsDialogLite implements DialogInterface.OnDismissListene
                 SysuiColorExtractor sysuiColorExtractor, IStatusBarService statusBarService,
                 NotificationShadeWindowController notificationShadeWindowController,
                 SysUiState sysuiState, Runnable onRotateCallback, boolean keyguardShowing,
-                MyPowerOptionsAdapter powerAdapter, UiEventLogger uiEventLogger) {
+                MyPowerOptionsAdapter powerAdapter, UiEventLogger uiEventLogger,
+                @Nullable GlobalActionsInfoProvider infoProvider) {
             super(context, themeRes);
             mContext = context;
             mAdapter = adapter;
@@ -2118,6 +2124,7 @@ public class GlobalActionsDialogLite implements DialogInterface.OnDismissListene
             mOnRotateCallback = onRotateCallback;
             mKeyguardShowing = keyguardShowing;
             mUiEventLogger = uiEventLogger;
+            mInfoProvider = infoProvider;
 
             // Window initialization
             Window window = getWindow();
@@ -2215,6 +2222,10 @@ public class GlobalActionsDialogLite implements DialogInterface.OnDismissListene
                 mBackgroundDrawable = new ScrimDrawable();
                 mScrimAlpha = 1.0f;
             }
+
+            if (mInfoProvider != null && mInfoProvider.shouldShowMessage()) {
+                mInfoProvider.addPanel(mContext, mContainer, mAdapter.getCount(), () -> dismiss());
+            }
         }
 
         protected void fixNavBarClipping() {
diff --git a/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsInfoProvider.kt b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsInfoProvider.kt
new file mode 100644
index 0000000000000..ee7f5ed8c86ea
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsInfoProvider.kt
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.systemui.globalactions
+
+import android.content.Context
+import android.service.quickaccesswallet.QuickAccessWalletClient
+import android.view.ViewGroup
+import com.android.systemui.controls.controller.ControlsController
+import com.android.systemui.plugins.ActivityStarter
+import javax.inject.Inject
+
+// Empty class, will be overridden for relevant devices
+class GlobalActionsInfoProvider @Inject constructor(
+    private val context: Context,
+    private val walletClient: QuickAccessWalletClient,
+    private val controlsController: ControlsController,
+    private val activityStarter: ActivityStarter
+) {
+
+    fun addPanel(context: Context, parent: ViewGroup, nActions: Int, dismissParent: Runnable) { }
+
+    fun shouldShowMessage(): Boolean {
+        return false
+    }
+}
\ No newline at end of file
diff --git a/packages/SystemUI/tests/src/com/android/systemui/globalactions/GlobalActionsDialogLiteTest.java b/packages/SystemUI/tests/src/com/android/systemui/globalactions/GlobalActionsDialogLiteTest.java
index 003368d99dcc5..83e7b17eb7463 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/globalactions/GlobalActionsDialogLiteTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/globalactions/GlobalActionsDialogLiteTest.java
@@ -103,6 +103,7 @@ public class GlobalActionsDialogLiteTest extends SysuiTestCase {
     @Mock private IWindowManager mWindowManager;
     @Mock private Executor mBackgroundExecutor;
     @Mock private UiEventLogger mUiEventLogger;
+    @Mock private GlobalActionsInfoProvider mInfoProvider;
     @Mock private RingerModeTracker mRingerModeTracker;
     @Mock private RingerModeLiveData mRingerModeLiveData;
     @Mock private SysUiState mSysUiState;
@@ -146,6 +147,7 @@ public class GlobalActionsDialogLiteTest extends SysuiTestCase {
                 mWindowManager,
                 mBackgroundExecutor,
                 mUiEventLogger,
+                mInfoProvider,
                 mRingerModeTracker,
                 mSysUiState,
                 mHandler
diff --git a/packages/SystemUI/tests/src/com/android/systemui/globalactions/GlobalActionsInfoProviderTest.kt b/packages/SystemUI/tests/src/com/android/systemui/globalactions/GlobalActionsInfoProviderTest.kt
new file mode 100644
index 0000000000000..d3b9228fff6de
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/globalactions/GlobalActionsInfoProviderTest.kt
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.globalactions
+
+import android.service.quickaccesswallet.QuickAccessWalletClient
+import android.testing.AndroidTestingRunner
+import android.view.ViewGroup
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.controls.controller.ControlsController
+import com.android.systemui.plugins.ActivityStarter
+import com.google.common.truth.Truth.assertThat
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.ArgumentMatchers.anyObject
+import org.mockito.Mock
+import org.mockito.Mockito.mock
+import org.mockito.Mockito.verify
+import org.mockito.Mockito.never
+import org.mockito.MockitoAnnotations
+
+@SmallTest
+@RunWith(AndroidTestingRunner::class)
+class GlobalActionsInfoProviderTest : SysuiTestCase() {
+
+    @Mock
+    private lateinit var walletClient: QuickAccessWalletClient
+    @Mock
+    private lateinit var controlsController: ControlsController
+    @Mock
+    private lateinit var activityStarter: ActivityStarter
+
+    private lateinit var infoProvider: GlobalActionsInfoProvider
+
+    @Before
+    fun setup() {
+        MockitoAnnotations.initMocks(this)
+        infoProvider = GlobalActionsInfoProvider(
+                context,
+                walletClient,
+                controlsController,
+                activityStarter
+        )
+    }
+
+    @Test
+    fun testAddPanel_doesNothing() {
+        val parent = mock(ViewGroup::class.java)
+        infoProvider.addPanel(context, parent, 1, { })
+        verify(parent, never()).addView(anyObject(), anyInt())
+    }
+
+    @Test
+    fun testShouldShowPanel() {
+        assertThat(infoProvider.shouldShowMessage()).isFalse()
+    }
+}
\ No newline at end of file