diff --git a/quickstep/src/com/android/launcher3/model/WellbeingModel.java b/quickstep/src/com/android/launcher3/model/WellbeingModel.java
index f42b124..cc7b712 100644
--- a/quickstep/src/com/android/launcher3/model/WellbeingModel.java
+++ b/quickstep/src/com/android/launcher3/model/WellbeingModel.java
@@ -43,9 +43,11 @@
 import android.util.Log;
 
 import androidx.annotation.MainThread;
+import androidx.annotation.WorkerThread;
 
 import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.R;
+import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.popup.RemoteActionShortcut;
 import com.android.launcher3.popup.SystemShortcut;
@@ -57,6 +59,7 @@
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.function.Consumer;
 
 /**
  * Data model for digital wellbeing status of apps.
@@ -72,6 +75,9 @@
     private static final int MSG_FULL_REFRESH = 3;
 
     // Welbeing contract
+    private static final String PATH_ACTIONS = "actions";
+    private static final String PATH_MINIMAL_DEVICE = "minimal_device";
+    private static final String METHOD_GET_MINIMAL_DEVICE_CONFIG = "get_minimal_device_config";
     private static final String METHOD_GET_ACTIONS = "get_actions";
     private static final String EXTRA_ACTIONS = "actions";
     private static final String EXTRA_ACTION = "action";
@@ -104,15 +110,22 @@
         mContentObserver = new ContentObserver(MAIN_EXECUTOR.getHandler()) {
             @Override
             public void onChange(boolean selfChange, Uri uri) {
-                // Wellbeing reports that app actions have changed.
                 if (DEBUG || mIsInTest) {
-                    Log.d(TAG, "ContentObserver.onChange() called with: selfChange = [" + selfChange
-                            + "], uri = [" + uri + "]");
+                    Log.d(TAG, "ContentObserver.onChange() called with: selfChange = ["
+                            + selfChange + "], uri = [" + uri + "]");
                 }
                 Preconditions.assertUIThread();
-                updateWellbeingData();
+
+                if (uri.getPath().contains(PATH_ACTIONS)) {
+                    // Wellbeing reports that app actions have changed.
+                    updateWellbeingData();
+                } else if (uri.getPath().contains(PATH_MINIMAL_DEVICE)) {
+                    // Wellbeing reports that minimal device state or config is changed.
+                    updateLauncherModel();
+                }
             }
         };
+        FeatureFlags.ENABLE_MINIMAL_DEVICE.addChangeListener(mContext, this::updateLauncherModel);
 
         if (!TextUtils.isEmpty(mWellbeingProviderPkg)) {
             context.registerReceiver(
@@ -146,14 +159,18 @@
     private void restartObserver() {
         final ContentResolver resolver = mContext.getContentResolver();
         resolver.unregisterContentObserver(mContentObserver);
-        Uri actionsUri = apiBuilder().path("actions").build();
+        Uri actionsUri = apiBuilder().path(PATH_ACTIONS).build();
+        Uri minimalDeviceUri = apiBuilder().path(PATH_MINIMAL_DEVICE).build();
         try {
             resolver.registerContentObserver(
                     actionsUri, true /* notifyForDescendants */, mContentObserver);
+            resolver.registerContentObserver(
+                    minimalDeviceUri, true /* notifyForDescendants */, mContentObserver);
         } catch (Exception e) {
             Log.e(TAG, "Failed to register content observer for " + actionsUri + ": " + e);
             if (mIsInTest) throw new RuntimeException(e);
         }
+
         updateWellbeingData();
     }
 
@@ -191,12 +208,42 @@
         mWorkerHandler.sendEmptyMessage(MSG_FULL_REFRESH);
     }
 
+    private void updateLauncherModel() {
+        if (!FeatureFlags.ENABLE_MINIMAL_DEVICE.get()) return;
+
+        // TODO: init Launcher in minimal device / normal mode
+    }
+
     private Uri.Builder apiBuilder() {
         return new Uri.Builder()
                 .scheme(SCHEME_CONTENT)
                 .authority(mWellbeingProviderPkg + ".api");
     }
 
+    /**
+     * Fetch most up-to-date minimal device config.
+     */
+    @WorkerThread
+    private void runWithMinimalDeviceConfigs(Consumer<Bundle> consumer) {
+        if (DEBUG || mIsInTest) {
+            Log.d(TAG, "runWithMinimalDeviceConfigs() called");
+        }
+        Preconditions.assertNonUiThread();
+
+        final Uri contentUri = apiBuilder().build();
+        final Bundle remoteBundle;
+        try (ContentProviderClient client = mContext.getContentResolver()
+                .acquireUnstableContentProviderClient(contentUri)) {
+            remoteBundle = client.call(
+                    METHOD_GET_MINIMAL_DEVICE_CONFIG, null /* args */, null /* extras */);
+            consumer.accept(remoteBundle);
+        } catch (Exception e) {
+            Log.e(TAG, "Failed to retrieve data from " + contentUri + ": " + e);
+            if (mIsInTest) throw new RuntimeException(e);
+        }
+        if (DEBUG || mIsInTest) Log.i(TAG, "runWithMinimalDeviceConfigs(): finished");
+    }
+
     private boolean updateActions(String... packageNames) {
         if (packageNames.length == 0) {
             return true;
diff --git a/src/com/android/launcher3/model/BgDataModel.java b/src/com/android/launcher3/model/BgDataModel.java
index 6158a9c..fd8520d 100644
--- a/src/com/android/launcher3/model/BgDataModel.java
+++ b/src/com/android/launcher3/model/BgDataModel.java
@@ -422,7 +422,7 @@
 
         @Override
         public FixedContainerItems clone() {
-            return new FixedContainerItems(containerId, Collections.unmodifiableList(items));
+            return new FixedContainerItems(containerId, new ArrayList<>(items));
         }
     }
 
diff --git a/tests/tapl/com/android/launcher3/tapl/Background.java b/tests/tapl/com/android/launcher3/tapl/Background.java
index e538f60..c9c846f 100644
--- a/tests/tapl/com/android/launcher3/tapl/Background.java
+++ b/tests/tapl/com/android/launcher3/tapl/Background.java
@@ -16,8 +16,9 @@
 
 package com.android.launcher3.tapl;
 
+import static android.view.accessibility.AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
+
 import static com.android.launcher3.tapl.OverviewTask.TASK_START_EVENT;
-import static com.android.launcher3.testing.TestProtocol.BACKGROUND_APP_STATE_ORDINAL;
 import static com.android.launcher3.testing.TestProtocol.OVERVIEW_STATE_ORDINAL;
 
 import android.graphics.Point;
@@ -150,67 +151,68 @@
     /**
      * Swipes right or double presses the square button to switch to the previous app.
      */
+    @NonNull
     public Background quickSwitchToPreviousApp() {
         try (LauncherInstrumentation.Closable e = mLauncher.eventsCheck();
              LauncherInstrumentation.Closable c = mLauncher.addContextLayer(
                      "want to quick switch to the previous app")) {
             verifyActiveContainer();
-            quickSwitchToPreviousApp(getExpectedStateForQuickSwitch());
+            final boolean launcherWasVisible = mLauncher.isLauncherVisible();
+            boolean transposeInLandscape = false;
+            switch (mLauncher.getNavigationModel()) {
+                case TWO_BUTTON:
+                    transposeInLandscape = true;
+                    // Fall through, zero button and two button modes behave the same.
+                case ZERO_BUTTON: {
+                    final int startX;
+                    final int startY;
+                    final int endX;
+                    final int endY;
+                    if (mLauncher.getDevice().isNaturalOrientation() || !transposeInLandscape) {
+                        // Swipe from the bottom left to the bottom right of the screen.
+                        startX = 0;
+                        startY = getSwipeStartY();
+                        endX = mLauncher.getDevice().getDisplayWidth();
+                        endY = startY;
+                    } else {
+                        // Swipe from the bottom right to the top right of the screen.
+                        startX = getSwipeStartX();
+                        startY = mLauncher.getRealDisplaySize().y - 1;
+                        endX = startX;
+                        endY = 0;
+                    }
+                    final boolean isZeroButton = mLauncher.getNavigationModel()
+                            == LauncherInstrumentation.NavigationModel.ZERO_BUTTON;
+                    LauncherInstrumentation.GestureScope gestureScope =
+                            launcherWasVisible && isZeroButton
+                                    ? LauncherInstrumentation.GestureScope.INSIDE_TO_OUTSIDE
+                                    : LauncherInstrumentation.GestureScope.OUTSIDE_WITH_PILFER;
+                    mLauncher.executeAndWaitForEvent(
+                            () -> mLauncher.linearGesture(
+                                    startX, startY, endX, endY, 20, false, gestureScope),
+                            event -> event.getEventType() == TYPE_WINDOW_STATE_CHANGED,
+                            () -> "Quick switch gesture didn't change window state");
+                    break;
+                }
+
+                case THREE_BUTTON:
+                    // Double press the recents button.
+                    UiObject2 recentsButton = mLauncher.waitForSystemUiObject("recent_apps");
+                    mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN, SQUARE_BUTTON_EVENT);
+                    mLauncher.runToState(() -> recentsButton.click(), OVERVIEW_STATE_ORDINAL);
+                    mLauncher.getOverview();
+                    mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN, SQUARE_BUTTON_EVENT);
+                    mLauncher.executeAndWaitForEvent(
+                            () -> recentsButton.click(),
+                            event -> event.getEventType() == TYPE_WINDOW_STATE_CHANGED,
+                            () -> "Pressing recents button didn't change window state");
+                    break;
+            }
+            mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN, TASK_START_EVENT);
             return new Background(mLauncher);
         }
     }
 
-    protected int getExpectedStateForQuickSwitch() {
-        return BACKGROUND_APP_STATE_ORDINAL;
-    }
-
-    protected void quickSwitchToPreviousApp(int expectedState) {
-        final boolean launcherWasVisible = mLauncher.isLauncherVisible();
-        boolean transposeInLandscape = false;
-        switch (mLauncher.getNavigationModel()) {
-            case TWO_BUTTON:
-                transposeInLandscape = true;
-                // Fall through, zero button and two button modes behave the same.
-            case ZERO_BUTTON: {
-                final int startX;
-                final int startY;
-                final int endX;
-                final int endY;
-                if (mLauncher.getDevice().isNaturalOrientation() || !transposeInLandscape) {
-                    // Swipe from the bottom left to the bottom right of the screen.
-                    startX = 0;
-                    startY = getSwipeStartY();
-                    endX = mLauncher.getDevice().getDisplayWidth();
-                    endY = startY;
-                } else {
-                    // Swipe from the bottom right to the top right of the screen.
-                    startX = getSwipeStartX();
-                    startY = mLauncher.getRealDisplaySize().y - 1;
-                    endX = startX;
-                    endY = 0;
-                }
-                final boolean isZeroButton = mLauncher.getNavigationModel()
-                        == LauncherInstrumentation.NavigationModel.ZERO_BUTTON;
-                mLauncher.swipeToState(startX, startY, endX, endY, 20, expectedState,
-                        launcherWasVisible && isZeroButton
-                                ? LauncherInstrumentation.GestureScope.INSIDE_TO_OUTSIDE
-                                : LauncherInstrumentation.GestureScope.OUTSIDE_WITH_PILFER);
-                break;
-            }
-
-            case THREE_BUTTON:
-                // Double press the recents button.
-                UiObject2 recentsButton = mLauncher.waitForSystemUiObject("recent_apps");
-                mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN, SQUARE_BUTTON_EVENT);
-                mLauncher.runToState(() -> recentsButton.click(), OVERVIEW_STATE_ORDINAL);
-                mLauncher.getOverview();
-                mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN, SQUARE_BUTTON_EVENT);
-                recentsButton.click();
-                break;
-        }
-        mLauncher.expectEvent(TestProtocol.SEQUENCE_MAIN, TASK_START_EVENT);
-    }
-
     protected String getSwipeHeightRequestName() {
         return TestProtocol.REQUEST_BACKGROUND_TO_OVERVIEW_SWIPE_HEIGHT;
     }
diff --git a/tests/tapl/com/android/launcher3/tapl/Home.java b/tests/tapl/com/android/launcher3/tapl/Home.java
index c06e254..0060844 100644
--- a/tests/tapl/com/android/launcher3/tapl/Home.java
+++ b/tests/tapl/com/android/launcher3/tapl/Home.java
@@ -16,8 +16,6 @@
 
 package com.android.launcher3.tapl;
 
-import static com.android.launcher3.testing.TestProtocol.QUICK_SWITCH_STATE_ORDINAL;
-
 import androidx.annotation.NonNull;
 
 /**
@@ -65,8 +63,4 @@
         return true;
     }
 
-    @Override
-    protected int getExpectedStateForQuickSwitch() {
-        return QUICK_SWITCH_STATE_ORDINAL;
-    }
 }
\ No newline at end of file