diff --git a/core/java/android/appwidget/AppWidgetManager.java b/core/java/android/appwidget/AppWidgetManager.java
index 888955c..2af65b9 100644
--- a/core/java/android/appwidget/AppWidgetManager.java
+++ b/core/java/android/appwidget/AppWidgetManager.java
@@ -448,6 +448,10 @@
      * and outside of the handler.
      * This method will only work when called from the uid that owns the AppWidget provider.
      *
+     * <p>
+     * This method will be ignored if a widget has not received a full update via
+     * {@link #updateAppWidget(int[], RemoteViews)}.
+     *
      * @param appWidgetIds     The AppWidget instances for which to set the RemoteViews.
      * @param views            The RemoteViews object containing the incremental update / command.
      */
@@ -476,6 +480,10 @@
      * and outside of the handler.
      * This method will only work when called from the uid that owns the AppWidget provider.
      *
+     * <p>
+     * This method will be ignored if a widget has not received a full update via
+     * {@link #updateAppWidget(int[], RemoteViews)}.
+     *
      * @param appWidgetId      The AppWidget instance for which to set the RemoteViews.
      * @param views            The RemoteViews object containing the incremental update / command.
      */
diff --git a/services/java/com/android/server/AppWidgetServiceImpl.java b/services/java/com/android/server/AppWidgetServiceImpl.java
index 04cfa4f..9fea6f3 100644
--- a/services/java/com/android/server/AppWidgetServiceImpl.java
+++ b/services/java/com/android/server/AppWidgetServiceImpl.java
@@ -943,7 +943,10 @@
             ensureStateLoadedLocked();
             for (int i = 0; i < N; i++) {
                 AppWidgetId id = lookupAppWidgetIdLocked(appWidgetIds[i]);
-                updateAppWidgetInstanceLocked(id, views, true);
+                if (id.views != null) {
+                    // Only trigger a partial update for a widget if it has received a full update
+                    updateAppWidgetInstanceLocked(id, views, true);
+                }
             }
         }
     }
@@ -996,7 +999,7 @@
         // drop unbound appWidgetIds (shouldn't be possible under normal circumstances)
         if (id != null && id.provider != null && !id.provider.zombie && !id.host.zombie) {
 
-            if (!isPartialUpdate || id.views == null) {
+            if (!isPartialUpdate) {
                 // For a full update we replace the RemoteViews completely.
                 id.views = views;
             } else {