diff --git a/core/java/android/hardware/display/DisplayManager.java b/core/java/android/hardware/display/DisplayManager.java
index b182fa2..e700cac 100644
--- a/core/java/android/hardware/display/DisplayManager.java
+++ b/core/java/android/hardware/display/DisplayManager.java
@@ -23,6 +23,7 @@
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
 import android.annotation.TestApi;
+import android.annotation.UnsupportedAppUsage;
 import android.app.KeyguardManager;
 import android.content.Context;
 import android.graphics.Point;
@@ -62,6 +63,7 @@
      * </p>
      * @hide
      */
+    @UnsupportedAppUsage
     public static final String ACTION_WIFI_DISPLAY_STATUS_CHANGED =
             "android.hardware.display.action.WIFI_DISPLAY_STATUS_CHANGED";
 
@@ -69,6 +71,7 @@
      * Contains a {@link WifiDisplayStatus} object.
      * @hide
      */
+    @UnsupportedAppUsage
     public static final String EXTRA_WIFI_DISPLAY_STATUS =
             "android.hardware.display.extra.WIFI_DISPLAY_STATUS";
 
@@ -437,6 +440,7 @@
      *
      * @hide
      */
+    @UnsupportedAppUsage
     public void startWifiDisplayScan() {
         mGlobal.startWifiDisplayScan();
     }
@@ -449,6 +453,7 @@
      *
      * @hide
      */
+    @UnsupportedAppUsage
     public void stopWifiDisplayScan() {
         mGlobal.stopWifiDisplayScan();
     }
@@ -466,16 +471,19 @@
      * @param deviceAddress The MAC address of the device to which we should connect.
      * @hide
      */
+    @UnsupportedAppUsage
     public void connectWifiDisplay(String deviceAddress) {
         mGlobal.connectWifiDisplay(deviceAddress);
     }
 
     /** @hide */
+    @UnsupportedAppUsage
     public void pauseWifiDisplay() {
         mGlobal.pauseWifiDisplay();
     }
 
     /** @hide */
+    @UnsupportedAppUsage
     public void resumeWifiDisplay() {
         mGlobal.resumeWifiDisplay();
     }
@@ -485,6 +493,7 @@
      * The results are sent as a {@link #ACTION_WIFI_DISPLAY_STATUS_CHANGED} broadcast.
      * @hide
      */
+    @UnsupportedAppUsage
     public void disconnectWifiDisplay() {
         mGlobal.disconnectWifiDisplay();
     }
@@ -504,6 +513,7 @@
      * or empty if no alias should be used.
      * @hide
      */
+    @UnsupportedAppUsage
     public void renameWifiDisplay(String deviceAddress, String alias) {
         mGlobal.renameWifiDisplay(deviceAddress, alias);
     }
@@ -519,6 +529,7 @@
      * @param deviceAddress The MAC address of the device to forget.
      * @hide
      */
+    @UnsupportedAppUsage
     public void forgetWifiDisplay(String deviceAddress) {
         mGlobal.forgetWifiDisplay(deviceAddress);
     }
@@ -531,6 +542,7 @@
      * @return The current Wifi display status.
      * @hide
      */
+    @UnsupportedAppUsage
     public WifiDisplayStatus getWifiDisplayStatus() {
         return mGlobal.getWifiDisplayStatus();
     }
diff --git a/core/java/android/hardware/display/DisplayManagerGlobal.java b/core/java/android/hardware/display/DisplayManagerGlobal.java
index d968a3e..7304ab4 100644
--- a/core/java/android/hardware/display/DisplayManagerGlobal.java
+++ b/core/java/android/hardware/display/DisplayManagerGlobal.java
@@ -16,6 +16,7 @@
 
 package android.hardware.display;
 
+import android.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.pm.ParceledListSlice;
 import android.content.res.Resources;
@@ -66,10 +67,12 @@
     public static final int EVENT_DISPLAY_CHANGED = 2;
     public static final int EVENT_DISPLAY_REMOVED = 3;
 
+    @UnsupportedAppUsage
     private static DisplayManagerGlobal sInstance;
 
     private final Object mLock = new Object();
 
+    @UnsupportedAppUsage
     private final IDisplayManager mDm;
 
     private DisplayManagerCallback mCallback;
@@ -91,6 +94,7 @@
      * @return The display manager instance, may be null early in system startup
      * before the display manager has been fully initialized.
      */
+    @UnsupportedAppUsage
     public static DisplayManagerGlobal getInstance() {
         synchronized (DisplayManagerGlobal.class) {
             if (sInstance == null) {
@@ -110,6 +114,7 @@
      * @return Information about the specified display, or null if it does not exist.
      * This object belongs to an internal cache and should be treated as if it were immutable.
      */
+    @UnsupportedAppUsage
     public DisplayInfo getDisplayInfo(int displayId) {
         try {
             synchronized (mLock) {
@@ -146,6 +151,7 @@
      *
      * @return An array containing all display ids.
      */
+    @UnsupportedAppUsage
     public int[] getDisplayIds() {
         try {
             synchronized (mLock) {
@@ -209,6 +215,7 @@
      * @param displayId The logical display id.
      * @return The display object, or null if there is no display with the given id.
      */
+    @UnsupportedAppUsage
     public Display getRealDisplay(int displayId) {
         return getCompatibleDisplay(displayId, DisplayAdjustments.DEFAULT_DISPLAY_ADJUSTMENTS);
     }
@@ -337,6 +344,7 @@
         }
     }
 
+    @UnsupportedAppUsage
     public void disconnectWifiDisplay() {
         try {
             mDm.disconnectWifiDisplay();
@@ -369,6 +377,7 @@
         }
     }
 
+    @UnsupportedAppUsage
     public WifiDisplayStatus getWifiDisplayStatus() {
         try {
             return mDm.getWifiDisplayStatus();
diff --git a/core/java/android/hardware/display/WifiDisplay.java b/core/java/android/hardware/display/WifiDisplay.java
index bb32c19..12486e8 100644
--- a/core/java/android/hardware/display/WifiDisplay.java
+++ b/core/java/android/hardware/display/WifiDisplay.java
@@ -16,6 +16,7 @@
 
 package android.hardware.display;
 
+import android.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
@@ -76,6 +77,7 @@
     /**
      * Gets the MAC address of the Wifi display device.
      */
+    @UnsupportedAppUsage
     public String getDeviceAddress() {
         return mDeviceAddress;
     }
@@ -83,6 +85,7 @@
     /**
      * Gets the name of the Wifi display device.
      */
+    @UnsupportedAppUsage
     public String getDeviceName() {
         return mDeviceName;
     }
@@ -94,6 +97,7 @@
      * provided by the user when renaming the device.
      * </p>
      */
+    @UnsupportedAppUsage
     public String getDeviceAlias() {
         return mDeviceAlias;
     }
@@ -101,6 +105,7 @@
     /**
      * Returns true if device is available, false otherwise.
      */
+    @UnsupportedAppUsage
     public boolean isAvailable() {
         return mIsAvailable;
     }
@@ -108,6 +113,7 @@
     /**
      * Returns true if device can be connected to (not in use), false otherwise.
      */
+    @UnsupportedAppUsage
     public boolean canConnect() {
         return mCanConnect;
     }
@@ -115,6 +121,7 @@
     /**
      * Returns true if device has been remembered, false otherwise.
      */
+    @UnsupportedAppUsage
     public boolean isRemembered() {
         return mIsRemembered;
     }
@@ -136,6 +143,7 @@
      * Returns true if the two displays have the same identity (address, name and alias).
      * This method does not compare the current status of the displays.
      */
+    @UnsupportedAppUsage
     public boolean equals(WifiDisplay other) {
         return other != null
                 && mDeviceAddress.equals(other.mDeviceAddress)
diff --git a/core/java/android/hardware/display/WifiDisplayStatus.java b/core/java/android/hardware/display/WifiDisplayStatus.java
index b645662..c267834 100644
--- a/core/java/android/hardware/display/WifiDisplayStatus.java
+++ b/core/java/android/hardware/display/WifiDisplayStatus.java
@@ -16,6 +16,7 @@
 
 package android.hardware.display;
 
+import android.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
 
@@ -34,7 +35,9 @@
     private final int mFeatureState;
     private final int mScanState;
     private final int mActiveDisplayState;
+    @UnsupportedAppUsage
     private final WifiDisplay mActiveDisplay;
+    @UnsupportedAppUsage
     private final WifiDisplay[] mDisplays;
 
     /** Session info needed for Miracast Certification */
@@ -47,18 +50,23 @@
     /** Feature state: Wifi display is turned off in settings. */
     public static final int FEATURE_STATE_OFF = 2;
     /** Feature state: Wifi display is turned on in settings. */
+    @UnsupportedAppUsage
     public static final int FEATURE_STATE_ON = 3;
 
     /** Scan state: Not currently scanning. */
+    @UnsupportedAppUsage
     public static final int SCAN_STATE_NOT_SCANNING = 0;
     /** Scan state: Currently scanning. */
     public static final int SCAN_STATE_SCANNING = 1;
 
     /** Display state: Not connected. */
+    @UnsupportedAppUsage
     public static final int DISPLAY_STATE_NOT_CONNECTED = 0;
     /** Display state: Connecting to active display. */
+    @UnsupportedAppUsage
     public static final int DISPLAY_STATE_CONNECTING = 1;
     /** Display state: Connected to active display. */
+    @UnsupportedAppUsage
     public static final int DISPLAY_STATE_CONNECTED = 2;
 
     public static final Creator<WifiDisplayStatus> CREATOR = new Creator<WifiDisplayStatus>() {
@@ -117,6 +125,7 @@
      * connecting to displays have been met.
      * </p>
      */
+    @UnsupportedAppUsage
     public int getFeatureState() {
         return mFeatureState;
     }
@@ -126,6 +135,7 @@
      *
      * @return One of: {@link #SCAN_STATE_NOT_SCANNING} or {@link #SCAN_STATE_SCANNING}.
      */
+    @UnsupportedAppUsage
     public int getScanState() {
         return mScanState;
     }
@@ -136,6 +146,7 @@
      * @return One of: {@link #DISPLAY_STATE_NOT_CONNECTED}, {@link #DISPLAY_STATE_CONNECTING},
      * or {@link #DISPLAY_STATE_CONNECTED}.
      */
+    @UnsupportedAppUsage
     public int getActiveDisplayState() {
         return mActiveDisplayState;
     }
@@ -144,6 +155,7 @@
      * Gets the Wifi display that is currently active.  It may be connecting or
      * connected.
      */
+    @UnsupportedAppUsage
     public WifiDisplay getActiveDisplay() {
         return mActiveDisplay;
     }
@@ -153,6 +165,7 @@
      * Wifi displays as reported by the most recent scan, and all remembered
      * Wifi displays (not necessarily available at the time).
      */
+    @UnsupportedAppUsage
     public WifiDisplay[] getDisplays() {
         return mDisplays;
     }