diff --git a/services/core/java/com/android/server/clipboard/ClipboardService.java b/services/core/java/com/android/server/clipboard/ClipboardService.java
index 66aa40325a4f5..bdd2d2bc70598 100644
--- a/services/core/java/com/android/server/clipboard/ClipboardService.java
+++ b/services/core/java/com/android/server/clipboard/ClipboardService.java
@@ -20,6 +20,7 @@ import android.app.ActivityManagerNative;
 import android.app.AppGlobals;
 import android.app.AppOpsManager;
 import android.app.IActivityManager;
+import android.app.KeyguardManager;
 import android.content.BroadcastReceiver;
 import android.content.ClipData;
 import android.content.ClipDescription;
@@ -255,7 +256,7 @@ public class ClipboardService extends IClipboard.Stub {
     public ClipData getPrimaryClip(String pkg) {
         synchronized (this) {
             if (mAppOps.noteOp(AppOpsManager.OP_READ_CLIPBOARD, Binder.getCallingUid(),
-                    pkg) != AppOpsManager.MODE_ALLOWED) {
+                    pkg) != AppOpsManager.MODE_ALLOWED || isDeviceLocked()) {
                 return null;
             }
             addActiveOwnerLocked(Binder.getCallingUid(), pkg);
@@ -266,7 +267,7 @@ public class ClipboardService extends IClipboard.Stub {
     public ClipDescription getPrimaryClipDescription(String callingPackage) {
         synchronized (this) {
             if (mAppOps.checkOp(AppOpsManager.OP_READ_CLIPBOARD, Binder.getCallingUid(),
-                    callingPackage) != AppOpsManager.MODE_ALLOWED) {
+                    callingPackage) != AppOpsManager.MODE_ALLOWED || isDeviceLocked()) {
                 return null;
             }
             PerUserClipboard clipboard = getClipboard();
@@ -277,7 +278,7 @@ public class ClipboardService extends IClipboard.Stub {
     public boolean hasPrimaryClip(String callingPackage) {
         synchronized (this) {
             if (mAppOps.checkOp(AppOpsManager.OP_READ_CLIPBOARD, Binder.getCallingUid(),
-                    callingPackage) != AppOpsManager.MODE_ALLOWED) {
+                    callingPackage) != AppOpsManager.MODE_ALLOWED || isDeviceLocked()) {
                 return false;
             }
             return getClipboard().primaryClip != null;
@@ -301,7 +302,7 @@ public class ClipboardService extends IClipboard.Stub {
     public boolean hasClipboardText(String callingPackage) {
         synchronized (this) {
             if (mAppOps.checkOp(AppOpsManager.OP_READ_CLIPBOARD, Binder.getCallingUid(),
-                    callingPackage) != AppOpsManager.MODE_ALLOWED) {
+                    callingPackage) != AppOpsManager.MODE_ALLOWED || isDeviceLocked()) {
                 return false;
             }
             PerUserClipboard clipboard = getClipboard();
@@ -313,6 +314,11 @@ public class ClipboardService extends IClipboard.Stub {
         }
     }
 
+    private boolean isDeviceLocked() {
+        final KeyguardManager keyguardManager = mContext.getSystemService(KeyguardManager.class);
+        return keyguardManager != null && keyguardManager.isDeviceLocked();
+    }
+
     private final void checkUriOwnerLocked(Uri uri, int uid) {
         if (!"content".equals(uri.getScheme())) {
             return;