diff --git a/src/android/jar/src/org/qtproject/qt/android/QtLayout.java b/src/android/jar/src/org/qtproject/qt/android/QtLayout.java
index 7cb694dacfc..6c52a004220 100644
--- a/src/android/jar/src/org/qtproject/qt/android/QtLayout.java
+++ b/src/android/jar/src/org/qtproject/qt/android/QtLayout.java
@@ -49,6 +49,7 @@ import android.view.Display;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.WindowInsets;
+import android.view.WindowManager;
 
 public class QtLayout extends ViewGroup
 {
@@ -112,11 +113,25 @@ public class QtLayout extends ViewGroup
         }
 
         boolean isFullScreenView = h == realMetrics.heightPixels;
-
-        int insetLeft = isFullScreenView ? insets.getSystemWindowInsetLeft() : 0;
-        int insetTop = isFullScreenView ? insets.getSystemWindowInsetTop() : 0;
-        int insetRight = isFullScreenView ? insets.getSystemWindowInsetRight() : 0;
-        int insetBottom = isFullScreenView ? insets.getSystemWindowInsetBottom() : 0;
+        // The code uses insets for fullscreen mode only. However in practice
+        // the insets can be reported incorrectly. Both on Android 6 and Android 11
+        // a non-zero bottom inset is reported even when the
+        // WindowManager.LayoutParams.FLAG_FULLSCREEN flag is set.
+        // To avoid that, add an extra check for the fullscreen mode.
+        // The insets-related logic is not removed for the case when
+        // isFullScreenView == true, but hasFlagFullscreen == false, although
+        // I can't get such case in my tests.
+        final int windowFlags = ((Activity)getContext()).getWindow().getAttributes().flags;
+        final boolean hasFlagFullscreen =
+                (windowFlags & WindowManager.LayoutParams.FLAG_FULLSCREEN) != 0;
+        int insetLeft =
+                (isFullScreenView && !hasFlagFullscreen) ? insets.getSystemWindowInsetLeft() : 0;
+        int insetTop =
+                (isFullScreenView && !hasFlagFullscreen) ? insets.getSystemWindowInsetTop() : 0;
+        int insetRight =
+                (isFullScreenView && !hasFlagFullscreen) ? insets.getSystemWindowInsetRight() : 0;
+        int insetBottom =
+                (isFullScreenView && !hasFlagFullscreen) ? insets.getSystemWindowInsetBottom() : 0;
 
         int usableAreaWidth = w - insetLeft - insetRight;
         int usableAreaHeight = h - insetTop - insetBottom;
diff --git a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
index 3e6fd735d95..432b1e91892 100644
--- a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
+++ b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
@@ -445,6 +445,10 @@ private slots:
 
     void activateWhileModalHidden();
 
+#ifdef Q_OS_ANDROID
+    void showFullscreenAndroid();
+#endif
+
 private:
     const QString m_platform;
     QSize m_testWidgetSize;
@@ -12693,5 +12697,38 @@ void tst_QWidget::activateWhileModalHidden()
     QCOMPARE(QApplication::activeWindow(), &window);
 }
 
+#ifdef Q_OS_ANDROID
+void tst_QWidget::showFullscreenAndroid()
+{
+    QWidget w;
+    w.setAutoFillBackground(true);
+    QPalette p = w.palette();
+    p.setColor(QPalette::Window, Qt::red);
+    w.setPalette(p);
+
+    // Need to toggle showFullScreen() twice, see QTBUG-101968
+    w.showFullScreen();
+    QVERIFY(QTest::qWaitForWindowExposed(&w));
+    w.show();
+    QVERIFY(QTest::qWaitForWindowExposed(&w));
+    w.showFullScreen();
+    QVERIFY(QTest::qWaitForWindowExposed(&w));
+
+    // Make sure that the lower part of the screen contains the red widget, not
+    // the buttons.
+
+    const QRect fullGeometry = w.screen()->geometry();
+    // Take a rect of (20 x 20) from the bottom area
+    const QRect grabArea(10, fullGeometry.height() - 30, 20, 20);
+    const QImage img = grabFromWidget(&w, grabArea).toImage().convertedTo(QImage::Format_RGB32);
+
+    QPixmap expectedPix(20, 20);
+    expectedPix.fill(Qt::red);
+    const QImage expectedImg = expectedPix.toImage().convertedTo(QImage::Format_RGB32);
+
+    QCOMPARE(img, expectedImg);
+}
+#endif // Q_OS_ANDROID
+
 QTEST_MAIN(tst_QWidget)
 #include "tst_qwidget.moc"