diff --git a/src/android/BackgroundModeExt.java b/src/android/BackgroundModeExt.java
index ed765984..8ea2c1f2 100644
--- a/src/android/BackgroundModeExt.java
+++ b/src/android/BackgroundModeExt.java
@@ -115,6 +115,9 @@ public boolean execute (String action, JSONArray args,
                 wakeup();
                 unlock();
                 break;
+            case "lock":
+                clearScreenAndKeyguardFlags();
+                break;
             default:
                 validAction = false;
         }
diff --git a/www/background-mode.js b/www/background-mode.js
index fff3f8d3..e0cbfcad 100644
--- a/www/background-mode.js
+++ b/www/background-mode.js
@@ -291,6 +291,19 @@ exports.unlock = function()
     }
 };
 
+/**
+ * Returns the device to the state before executing unlock.
+ *
+ * @return [ Void ]
+ */
+exports.lock = function()
+{
+    if (this._isAndroid)
+    {
+        cordova.exec(null, null, 'BackgroundModeExt', 'lock', []);
+    }
+};
+
 /**
  * If the mode is enabled or disabled.
  *