diff --git a/TODO.md b/TODO.md
index 0188af4a52cdb350ca4b8d42a6fa50c21d70ed25..238ccaa0dd25c39611de0b495b29132d9ee23be1 100644
--- a/TODO.md
+++ b/TODO.md
@@ -98,10 +98,6 @@
 
 ============================================================================
 #### To consideration:
-  - additional settings options [Android]:
-      - disable screen locking (TRUE by default)
-      - full screen mode (TRUE by default)
-      - home button actions
   - In wizard: option for single note mode for very beginners
 
 
diff --git a/changes b/changes
index c9a39b37bafc123e52701eef3eb6a64b2a5dfdc8..cc33b2dbfa6d5d493764c6e2334c039379f222e4 100644
--- a/changes
+++ b/changes
@@ -6,6 +6,8 @@
      - disabling level creator pages which are currently unused
      - added help topic selector on 'help page' with all the context
      - make controls look (check boxes, radios, sliders) consistent
+    ANDROID
+     - configurable options for full screen, rotation and lock
     Under the hood:
      - reduced memory usage for charts with many questions
 
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diff --git a/src/libs/core/Android/tandroid.cpp b/src/libs/core/Android/tandroid.cpp
index fa8c0f238201f916fcb296f4b7f228777b290a0d..40a1e8310fd3e34e689a9fdf56968041b90ac34e 100644
--- a/src/libs/core/Android/tandroid.cpp
+++ b/src/libs/core/Android/tandroid.cpp
@@ -28,20 +28,38 @@
 #include <QtCore/qdebug.h>
 
 
-void Tandroid::setScreenLockDisabled() {
-  QAndroidJniObject activity = QtAndroid::androidActivity();
-  if (activity.isValid()) {
-    QAndroidJniObject window = activity.callObjectMethod("getWindow", "()Landroid/view/Window;");
-    if (window.isValid()) {
-      const int FLAG_KEEP_SCREEN_ON = 128;
-      const int FLAG_FULLSCREEN = 1024;
-//      const int FLAG_FORCE_NOT_FULLSCREEN = 2048;
-      window.callMethod<void>("addFlags", "(I)V", FLAG_KEEP_SCREEN_ON | FLAG_FULLSCREEN);
-      QAndroidJniEnvironment env;
-      if (env->ExceptionCheck())
-        env->ExceptionClear();
+void Tandroid::keepScreenOn(bool on) {
+  QtAndroid::runOnAndroidThread([on]{
+    QAndroidJniObject activity = QtAndroid::androidActivity();
+    if (activity.isValid()) {
+      QAndroidJniObject window =
+          activity.callObjectMethod("getWindow", "()Landroid/view/Window;");
+
+      if (window.isValid()) {
+        const int FLAG_KEEP_SCREEN_ON = 128;
+        if (on)
+          window.callMethod<void>("addFlags", "(I)V", FLAG_KEEP_SCREEN_ON);
+        else
+          window.callMethod<void>("clearFlags", "(I)V", FLAG_KEEP_SCREEN_ON);
+      }
     }
-  }
+    QAndroidJniEnvironment env;
+    if (env->ExceptionCheck())
+      env->ExceptionClear();
+  });
+}
+
+
+void Tandroid::disableRotation(bool disRot) {
+  int orientation = disRot ? 0 : 10; // SCREEN_ORIENTATION_LANDSCAPE or SCREEN_ORIENTATION_FULL_SENSOR
+  QtAndroid::runOnAndroidThread([orientation]{
+    QAndroidJniObject activity = QtAndroid::androidActivity();
+    if (activity.isValid())
+      activity.callMethod<void>("setRequestedOrientation" , "(I)V", orientation);
+    QAndroidJniEnvironment env;
+    if (env->ExceptionCheck())
+      env->ExceptionClear();
+  });
 }
 
 
diff --git a/src/libs/core/Android/tandroid.h b/src/libs/core/Android/tandroid.h
index 3aa60bd787764d46d4e7d9b3404fe9c6ff0cebac..0a23c04a8487ae3697f9ccc7bc97b7098436be66 100644
--- a/src/libs/core/Android/tandroid.h
+++ b/src/libs/core/Android/tandroid.h
@@ -28,11 +28,9 @@
  * Android functions requiring invoking native methods through JNI
  */
 namespace Tandroid {
+  void keepScreenOn(bool on);
 
-      /**
-       * Sets phone/tablet screen saving disabled.
-       */
-  void setScreenLockDisabled();
+  void disableRotation(bool disRot);
 
       /**
        * Returns a number of Android API on a hosting device.
diff --git a/src/libs/core/core.qrc b/src/libs/core/core.qrc
index 4795bfd7919794e95834bb53373cd3add517c3b9..29165b5f8bfb6f0dc14931f496e30dbfbad0983b 100644
--- a/src/libs/core/core.qrc
+++ b/src/libs/core/core.qrc
@@ -36,6 +36,7 @@
         <file>picts/pane/license.png</file>
         <file>picts/pane/melody.png</file>
         <file>picts/pane/notSaved.png</file>
+        <file>picts/pane/phoneSett.png</file>
         <file>picts/pane/qt.png</file>
         <file>picts/pane/questions.png</file>
         <file>picts/pane/range.png</file>
diff --git a/src/libs/core/tglobals.cpp b/src/libs/core/tglobals.cpp
index 20cbde927b257e14ba6ecda1e63b6511376b772d..c27a359615b26225b73d362ccaa10bd28f9accc9 100755
--- a/src/libs/core/tglobals.cpp
+++ b/src/libs/core/tglobals.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2011-2019 by Tomasz Bojczuk                             *
+ *   Copyright (C) 2011-2020 by Tomasz Bojczuk                             *
  *   seelook@gmail.com                                                     *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -313,7 +313,7 @@ void Tglobals::setMarkedFrets(const QString& frets) {
     }
     bool ok;
     int frNr = fr[i].toInt(&ok);
-    if (ok && frNr > 0 && frNr <= GfretsNumber)
+    if (ok && frNr > 0 && static_cast<uint>(frNr) <= GfretsNumber)
       GmarkedFrets << fr[i] + exMark;
   }
 }
@@ -449,7 +449,7 @@ QString Tglobals::examsDir() const { return E->examsDir; }
 
 void Tglobals::setGuitarParams(int fretNr, const Ttune& tun) {
   bool doEmit = false;
-  if (fretNr != GfretsNumber) {
+  if (static_cast<uint>(fretNr) != GfretsNumber) {
     GfretsNumber = fretNr;
     doEmit = true;
   }
@@ -667,6 +667,12 @@ void Tglobals::loadSettings(QSettings* cfg) {
     A->quantization = cfg->value(QStringLiteral("quantization"), 6).toInt();
   cfg->endGroup();
 
+#if defined (Q_OS_ANDROID)
+  m_keepScreenOn = cfg->value(QStringLiteral("keepScreenOn"), true).toBool();
+  m_disableRotation = cfg->value(QStringLiteral("disableRotation"), true).toBool();
+  m_fullScreen = cfg->value(QStringLiteral("fullScreen"), true).toBool();
+#endif
+
 //   cfg->beginGroup(QLatin1String("layout"));
 //     L->guitarEnabled = cfg->value(QStringLiteral("guitarEnabled"), true).toBool();
 // #if defined (Q_OS_ANDROID)
@@ -861,6 +867,12 @@ void Tglobals::storeSettings(QSettings* cfg) {
 #endif
   cfg->endGroup();
 
+#if defined (Q_OS_ANDROID)
+  cfg->setValue(QStringLiteral("keepScreenOn"), m_keepScreenOn);
+  cfg->setValue(QStringLiteral("disableRotation"), m_disableRotation);
+  cfg->setValue(QStringLiteral("fullScreen"), m_fullScreen);
+#endif
+
 //   cfg->beginGroup(QLatin1String("layout"));
 //       cfg->setValue(QStringLiteral("toolBarAutoHide"), L->toolBarAutoHide);
 //       cfg->setValue(QStringLiteral("iconTextOnToolBar"), (int)L->iconTextOnToolBar);
@@ -876,3 +888,24 @@ void Tglobals::storeSettings(QSettings* cfg) {
 //     cfg->setValue(QStringLiteral("initialAnimAccepted"), TtouchParams::i()->initialAnimAccepted);
 //   cfg->endGroup();
 }
+
+
+#if defined (Q_OS_ANDROID)
+
+void Tglobals::setDisableRotation(bool disRot) {
+  if (disRot != m_disableRotation) {
+    Tandroid::disableRotation(disRot);
+    m_disableRotation = disRot;
+  }
+}
+
+
+void Tglobals::keepScreenOn(bool on) {
+  if (on != m_keepScreenOn) {
+    Tandroid::keepScreenOn(on);
+    m_keepScreenOn = on;
+  }
+}
+
+#endif
+
diff --git a/src/libs/core/tglobals.h b/src/libs/core/tglobals.h
index d2a2c5582f7f0d51af4a620aa2fb65153c027829..394340bcce1cb5bfc49c476c2e66f6cc4ef9d11c 100644
--- a/src/libs/core/tglobals.h
+++ b/src/libs/core/tglobals.h
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2011-2019 by Tomasz Bojczuk                             *
+ *   Copyright (C) 2011-2020 by Tomasz Bojczuk                             *
  *   seelook@gmail.com                                                     *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -311,6 +311,15 @@ public:
 
   QString examsDir() const;
 
+#if defined (Q_OS_ANDROID)
+  Q_INVOKABLE void keepScreenOn(bool on);
+  Q_INVOKABLE void setDisableRotation(bool disRot);
+  Q_INVOKABLE bool isKeepScreenOn() { return  m_keepScreenOn; }
+  Q_INVOKABLE bool disableRotation() { return  m_disableRotation; }
+  Q_INVOKABLE bool fullScreen() { return m_fullScreen; }
+  Q_INVOKABLE void setFullScreen(bool fs) { m_fullScreen = fs; }
+#endif
+
       /**
        * Updates key signature names according to name style and major/minor suffixes.
        * Emits @p keyNameChanged() to inform MainScore.qml
@@ -447,6 +456,11 @@ private:
   Tinstrument                m_instrument;
   qreal                      m_guiScale;
   bool                       m_isExam = false;
+#if defined (Q_OS_ANDROID)
+  bool                       m_keepScreenOn;
+  bool                       m_disableRotation;
+  bool                       m_fullScreen;
+#endif
 
 };
 #endif // TGLOBALS_H
diff --git a/src/libs/core/tinitcorelib.cpp b/src/libs/core/tinitcorelib.cpp
index d705536ba9c1213d49f31b327c8032989eb9f72a..be4319b7e867ce2ea47cffd9681416b5ec5c13b1 100644
--- a/src/libs/core/tinitcorelib.cpp
+++ b/src/libs/core/tinitcorelib.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2014-2019 by Tomasz Bojczuk                             *
+ *   Copyright (C) 2014-2020 by Tomasz Bojczuk                             *
  *   seelook@gmail.com                                                     *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -35,7 +35,6 @@
 #endif
 
 
-
 bool initCoreLibrary() {
   if (GLOB == nullptr) {
     qDebug() << "Tglobals was not created. Construct it first!";
@@ -60,7 +59,8 @@ bool initCoreLibrary() {
 #endif
 #if defined (Q_OS_ANDROID)
   qApp->addLibraryPath(qApp->applicationDirPath());
-  Tandroid::setScreenLockDisabled(); // TODO: interact with some settings option
+  Tandroid::keepScreenOn(GLOB->isKeepScreenOn());
+  Tandroid::disableRotation(GLOB->disableRotation());
 #endif
 
   return true;
diff --git a/src/nootka.qrc b/src/nootka.qrc
index b08195190c039e978b55806022d07a75da05c9ff..4247d8e84612e5e529c07a28994bb7fd9bc563b5 100644
--- a/src/nootka.qrc
+++ b/src/nootka.qrc
@@ -104,6 +104,7 @@
     <file alias="settings/Select7note.qml">qml/settings/Select7note.qml</file>
     <file alias="settings/ExamPage.qml">qml/settings/ExamPage.qml</file>
     <file alias="settings/MiddleA440.qml">qml/settings/MiddleA440.qml</file>
+    <file alias="settings/PhonePage.qml">qml/settings/+android/PhonePage.qml</file>
 
     <file alias="LevelCreator.qml">qml/level/LevelCreator.qml</file>
     <file alias="level/LevelsPage.qml">qml/level/LevelsPage.qml</file>
diff --git a/src/qml/MainWindow.qml b/src/qml/MainWindow.qml
index 4c96731253e0a38c360d7576d3aac681ce48c79f..2c87ed8ea9f31d78c32c2cbd4041258c4eb96435 100644
--- a/src/qml/MainWindow.qml
+++ b/src/qml/MainWindow.qml
@@ -13,7 +13,7 @@ ApplicationWindow {
   visible: true
   title: "Nootka"
   color: activPal.window
-  visibility: Noo.isAndroid() ? "FullScreen" : "AutomaticVisibility"
+  visibility: Noo.isAndroid() && GLOB.fullScreen() ? "FullScreen" : "AutomaticVisibility"
 
   property alias mainMenu: mainMenu
 
@@ -112,8 +112,8 @@ ApplicationWindow {
 
   function showDialog(page) {
     if (!dialogLoader) {
-      var c = Qt.createComponent("qrc:/DialogLoader.qml")
-      dialogLoader = c.createObject(nootkaWindow)
+      var d = Qt.createComponent("qrc:/DialogLoader.qml")
+      dialogLoader = d.createObject(nootkaWindow)
     }
     if (page === Nootka.Charts) {
       var c = Qt.createComponent("qrc:/charts/AnalyzeDialog.qml")
diff --git a/src/qml/settings/+android/PhonePage.qml b/src/qml/settings/+android/PhonePage.qml
new file mode 100644
index 0000000000000000000000000000000000000000..7c4e5381a58730b02afd66a27f35e9ca4e731012
--- /dev/null
+++ b/src/qml/settings/+android/PhonePage.qml
@@ -0,0 +1,54 @@
+/** This file is part of Nootka (http://nootka.sf.net)               *
+ * Copyright (C) 2020 by Tomasz Bojczuk (seelook@gmail.com)          *
+ * on the terms of GNU GPLv3 license (http://www.gnu.org/licenses)   */
+
+
+import QtQuick 2.9
+import QtQuick.Controls 2.2
+
+import "../"
+
+
+Tflickable {
+  contentHeight: phoneCol.height
+  contentWidth: width
+
+  Column {
+    id: phoneCol
+    anchors.horizontalCenter: parent.horizontalCenter
+    topPadding: Noo.fontSize()
+    spacing: Noo.fontSize()
+
+    TcheckBox {
+      id: screenOnChB
+      text: qsTr("keep screen on")
+      checked: GLOB.isKeepScreenOn()
+    }
+    TcheckBox {
+      id: disRotatChB
+      text: qsTr("disable screen rotation")
+      checked: GLOB.disableRotation()
+    }
+    TcheckBox {
+      id: fullScrChB
+      text: qsTr("use full screen")
+      checked: GLOB.fullScreen()
+    }
+
+  }
+
+  function save() {
+    GLOB.keepScreenOn(screenOnChB.checked)
+    GLOB.setDisableRotation(disRotatChB.checked)
+    nootkaWindow.visibility = fullScrChB.checked ? "FullScreen" : "AutomaticVisibility"
+    GLOB.setFullScreen(fullScrChB.checked)
+  }
+
+  function defaults() {
+    screenOnChB.checked = true
+    disRotatChB.checked = true
+    fullScrChB.checked = true
+  }
+}
+
+
diff --git a/src/qml/settings/TsettingsDialog.qml b/src/qml/settings/TsettingsDialog.qml
index 3730853e5fa93a55bb48b424cbadfa21cf9216ad..e795d5fa914b61cbe340b44cfee772d9a72db9c5 100644
--- a/src/qml/settings/TsettingsDialog.qml
+++ b/src/qml/settings/TsettingsDialog.qml
@@ -22,6 +22,9 @@ Item {
       pages.addItem("sound", qsTr("Sound"), "settings/Sound")
     }
     pages.addItem("questions", qsTr("Exercises") + "\n& " + qsTr("Exam"), "settings/Exam")
+    if (Noo.isAndroid() && !GLOB.isExam)
+      pages.addItem("phoneSett", qsTr("Phone") + "\n&" + qsTr("Tablet"), "settings/Phone")
+
     dialLoader.standardButtons = DialogButtonBox.Apply | DialogButtonBox.Cancel | DialogButtonBox.RestoreDefaults | DialogButtonBox.Help
     dialLoader.title = "Nootka - " + qsTranslate("TsettingsDialog", "application's settings")
   }