diff --git a/linphone-desktop/assets/languages/en.ts b/linphone-desktop/assets/languages/en.ts
index 361c3c0e1..71311234a 100644
--- a/linphone-desktop/assets/languages/en.ts
+++ b/linphone-desktop/assets/languages/en.ts
@@ -859,6 +859,10 @@ Server url not configured.</translation>
         <source>languagesLabel</source>
         <translation>Language</translation>
     </message>
+    <message>
+        <source>systemLocale</source>
+        <translation>System locale</translation>
+    </message>
 </context>
 <context>
     <name>SettingsWindow</name>
diff --git a/linphone-desktop/assets/languages/fr.ts b/linphone-desktop/assets/languages/fr.ts
index 90e117183..810e2f75c 100644
--- a/linphone-desktop/assets/languages/fr.ts
+++ b/linphone-desktop/assets/languages/fr.ts
@@ -869,6 +869,10 @@ Url du serveur non configurée.</translation>
         <source>languagesLabel</source>
         <translation>Langue</translation>
     </message>
+    <message>
+        <source>systemLocale</source>
+        <translation>Locale du système</translation>
+    </message>
 </context>
 <context>
     <name>SettingsWindow</name>
diff --git a/linphone-desktop/src/app/App.cpp b/linphone-desktop/src/app/App.cpp
index 7775f2e00..9319b3ca7 100644
--- a/linphone-desktop/src/app/App.cpp
+++ b/linphone-desktop/src/app/App.cpp
@@ -29,18 +29,20 @@
 #include "../components/settings/SettingsModel.hpp"
 #include "../components/smart-search-bar/SmartSearchBarModel.hpp"
 #include "../components/timeline/TimelineModel.hpp"
+#include "../utils.hpp"
 
 #include "App.hpp"
+#include "DefaultTranslator.hpp"
 #include "Logger.hpp"
 
+#include <QDir>
 #include <QFileSelector>
 #include <QMenu>
-#include <QQmlComponent>
-#include <QQmlContext>
-#include <QQuickView>
 #include <QTimer>
 #include <QtDebug>
 
+#define DEFAULT_LOCALE "en"
+
 #define LANGUAGES_PATH ":/languages/"
 #define WINDOW_ICON_PATH ":/assets/images/linphone_logo.svg"
 
@@ -53,45 +55,32 @@
 
 App *App::m_instance = nullptr;
 
+inline bool installLocale (App &app, QTranslator &translator, const QLocale &locale) {
+  return translator.load(locale, LANGUAGES_PATH) && app.installTranslator(&translator);
+}
+
 App::App (int &argc, char **argv) : QApplication(argc, argv) {
-  this->setApplicationVersion("4.0");
+  setApplicationVersion("4.0");
 
-  if (m_english_translator.load(QLocale(QLocale::English), LANGUAGES_PATH))
-    installTranslator(&m_english_translator);
-  else
-    qWarning("Unable to install english translator.");
+  // List available locales.
+  for (const auto &locale : QDir(LANGUAGES_PATH).entryList())
+    m_available_locales << QLocale(locale);
 
-  // Try to use default locale.
-  QLocale current_locale = QLocale::system();
+  m_translator = new DefaultTranslator(this);
 
-  if (m_default_translator.load(current_locale, LANGUAGES_PATH)) {
-    installTranslator(&m_default_translator);
-    m_locale = current_locale.name();
-  } else {
-    qWarning() << QStringLiteral("Unable to found translations for locale: %1.")
-      .arg(current_locale.name());
+  // Try to use system locale.
+  QLocale sys_locale = QLocale::system();
+  if (installLocale(*this, *m_translator, sys_locale)) {
+    m_locale = sys_locale.name();
+    qInfo() << QStringLiteral("Use system locale: %1").arg(m_locale);
+    return;
   }
-}
 
-// -----------------------------------------------------------------------------
-
-QQuickWindow *App::getCallsWindow () const {
-  return m_calls_window;
-}
-
-QQuickWindow *App::getMainWindow () const {
-  QQmlApplicationEngine &engine = const_cast<QQmlApplicationEngine &>(m_engine);
-  return qobject_cast<QQuickWindow *>(engine.rootObjects().at(0));
-}
-
-QQuickWindow *App::getSettingsWindow () const {
-  return m_settings_window;
-}
-
-// -----------------------------------------------------------------------------
-
-bool App::hasFocus () const {
-  return getMainWindow()->isActive() || m_calls_window->isActive();
+  // Use english.
+  m_locale = DEFAULT_LOCALE;
+  if (!installLocale(*this, *m_translator, QLocale(m_locale)))
+    qFatal("Unable to install default translator.");
+  qInfo() << QStringLiteral("Use default locale: %1").arg(m_locale);
 }
 
 // -----------------------------------------------------------------------------
@@ -118,9 +107,30 @@ void App::initContentApp () {
   // Init core.
   CoreManager::init(m_parser.value("config"));
   qInfo() << "Core manager initialized.";
-
   qInfo() << "Activated selectors:" << QQmlFileSelector::get(&m_engine)->selector()->allSelectors();
 
+  // Try to use preferred locale.
+  {
+    QString locale = getConfigLocale();
+
+    if (!locale.isEmpty()) {
+      DefaultTranslator *translator = new DefaultTranslator(this);
+
+      if (installLocale(*this, *translator, QLocale(locale))) {
+        // Use config.
+        m_translator->deleteLater();
+        m_translator = translator;
+        m_locale = locale;
+
+        qInfo() << QStringLiteral("Use preferred locale: %1").arg(locale);
+      } else {
+        // Reset config.
+        setConfigLocale("");
+        translator->deleteLater();
+      }
+    }
+  }
+
   // Register types ans make sub windows.
   registerTypes();
   createSubWindows();
@@ -177,6 +187,27 @@ void App::parseArgs () {
 
 // -----------------------------------------------------------------------------
 
+QQuickWindow *App::getCallsWindow () const {
+  return m_calls_window;
+}
+
+QQuickWindow *App::getMainWindow () const {
+  QQmlApplicationEngine &engine = const_cast<QQmlApplicationEngine &>(m_engine);
+  return qobject_cast<QQuickWindow *>(engine.rootObjects().at(0));
+}
+
+QQuickWindow *App::getSettingsWindow () const {
+  return m_settings_window;
+}
+
+// -----------------------------------------------------------------------------
+
+bool App::hasFocus () const {
+  return getMainWindow()->isActive() || m_calls_window->isActive();
+}
+
+// -----------------------------------------------------------------------------
+
 void App::registerTypes () {
   qInfo() << "Registering types...";
 
@@ -323,6 +354,28 @@ void App::setTrayIcon () {
 
 // -----------------------------------------------------------------------------
 
+QString App::getConfigLocale () const {
+  return ::Utils::linphoneStringToQString(
+    CoreManager::getInstance()->getCore()->getConfig()->getString(
+      SettingsModel::UI_SECTION, "locale", ""
+    )
+  );
+}
+
+void App::setConfigLocale (const QString &locale) {
+  CoreManager::getInstance()->getCore()->getConfig()->setString(
+    SettingsModel::UI_SECTION, "locale", ::Utils::qStringToLinphoneString(locale)
+  );
+
+  emit configLocaleChanged(locale);
+}
+
+QString App::getLocale () const {
+  return m_locale;
+}
+
+// -----------------------------------------------------------------------------
+
 void App::quit () {
   if (m_parser.isSet("selftest")) {
     cout << tr("selftestResult").toStdString() << endl;
diff --git a/linphone-desktop/src/app/App.hpp b/linphone-desktop/src/app/App.hpp
index 14cfe8522..92ee4ee83 100644
--- a/linphone-desktop/src/app/App.hpp
+++ b/linphone-desktop/src/app/App.hpp
@@ -25,7 +25,6 @@
 
 #include "../components/notifier/Notifier.hpp"
 #include "AvatarProvider.hpp"
-#include "DefaultTranslator.hpp"
 #include "ThumbnailProvider.hpp"
 
 #include <QApplication>
@@ -37,10 +36,19 @@
 
 // =============================================================================
 
+class DefaultTranslator;
+
 class App : public QApplication {
   Q_OBJECT;
 
+  Q_PROPERTY(QString configLocale READ getConfigLocale WRITE setConfigLocale NOTIFY configLocaleChanged);
+  Q_PROPERTY(QString locale READ getLocale CONSTANT);
+  Q_PROPERTY(QVariantList availableLocales READ getAvailableLocales CONSTANT);
+
 public:
+  void initContentApp ();
+  void parseArgs ();
+
   QQmlEngine *getEngine () {
     return &m_engine;
   }
@@ -54,16 +62,8 @@ public:
 
   bool hasFocus () const;
 
-  void initContentApp ();
-
   Q_INVOKABLE QQuickWindow *getSettingsWindow () const;
 
-  Q_INVOKABLE QString locale () const {
-    return m_locale;
-  }
-
-  void parseArgs ();
-
   static void create (int &argc, char **argv) {
     if (!m_instance) {
       // Instance must be exists before content.
@@ -78,6 +78,9 @@ public:
 public slots:
   void quit ();
 
+signals:
+  void configLocaleChanged (const QString &locale);
+
 private:
   App (int &argc, char **argv);
   ~App () = default;
@@ -86,6 +89,15 @@ private:
   void createSubWindows ();
   void setTrayIcon ();
 
+  QString getConfigLocale () const;
+  void setConfigLocale (const QString &locale);
+
+  QString getLocale () const;
+
+  QVariantList getAvailableLocales () const {
+    return m_available_locales;
+  }
+
   QCommandLineParser m_parser;
   QQmlApplicationEngine m_engine;
   QQmlFileSelector *m_file_selector = nullptr;
@@ -93,11 +105,13 @@ private:
 
   AvatarProvider m_avatar_provider;
   ThumbnailProvider m_thumbnail_provider;
-  DefaultTranslator m_default_translator;
-  QTranslator m_english_translator;
+
+  DefaultTranslator *m_translator = nullptr;
 
   Notifier *m_notifier = nullptr;
-  QString m_locale = "en";
+
+  QVariantList m_available_locales;
+  QString m_locale;
 
   QQuickWindow *m_calls_window = nullptr;
   QQuickWindow *m_settings_window = nullptr;
diff --git a/linphone-desktop/src/app/DefaultTranslator.cpp b/linphone-desktop/src/app/DefaultTranslator.cpp
index f6604fe1e..df77ffa35 100644
--- a/linphone-desktop/src/app/DefaultTranslator.cpp
+++ b/linphone-desktop/src/app/DefaultTranslator.cpp
@@ -27,7 +27,7 @@
 
 // =============================================================================
 
-DefaultTranslator::DefaultTranslator () {
+DefaultTranslator::DefaultTranslator (QObject *parent) : QTranslator(parent) {
   QDirIterator it(":", QDirIterator::Subdirectories);
   while (it.hasNext()) {
     QFileInfo info(it.next());
diff --git a/linphone-desktop/src/app/DefaultTranslator.hpp b/linphone-desktop/src/app/DefaultTranslator.hpp
index 7ee1387ed..ba239c01a 100644
--- a/linphone-desktop/src/app/DefaultTranslator.hpp
+++ b/linphone-desktop/src/app/DefaultTranslator.hpp
@@ -30,7 +30,7 @@
 
 class DefaultTranslator : public QTranslator {
 public:
-  DefaultTranslator ();
+  DefaultTranslator (QObject *parent = Q_NULLPTR);
   ~DefaultTranslator () = default;
 
   QString translate (
diff --git a/linphone-desktop/src/components/settings/SettingsModel.hpp b/linphone-desktop/src/components/settings/SettingsModel.hpp
index be95f538d..a13968171 100644
--- a/linphone-desktop/src/components/settings/SettingsModel.hpp
+++ b/linphone-desktop/src/components/settings/SettingsModel.hpp
@@ -37,6 +37,8 @@ class SettingsModel : public QObject {
 public:
   SettingsModel (QObject *parent = Q_NULLPTR);
 
+  static const std::string UI_SECTION;
+
 signals:
   void autoAnswerStatusChanged (bool status);
   void fileTransferUrlChanged (const QString &url);
@@ -49,8 +51,6 @@ private:
   void setFileTransferUrl (const QString &url);
 
   std::shared_ptr<linphone::Config> m_config;
-
-  static const std::string UI_SECTION;
 };
 
 #endif // SETTINGS_MODEL_H_
diff --git a/linphone-desktop/src/main.cpp b/linphone-desktop/src/main.cpp
index 11175a1f2..2bfbce435 100644
--- a/linphone-desktop/src/main.cpp
+++ b/linphone-desktop/src/main.cpp
@@ -43,9 +43,11 @@ int main (int argc, char *argv[]) {
    */
 
   App::create(argc, argv);
-  App::getInstance()->parseArgs();
-  App::getInstance()->initContentApp();
+
+  App *app = App::getInstance();
+  app->parseArgs();
+  app->initContentApp();
 
   // Run!
-  return App::getInstance()->exec();
+  return app->exec();
 }
diff --git a/linphone-desktop/ui/modules/Linphone/Chat/Chat.qml b/linphone-desktop/ui/modules/Linphone/Chat/Chat.qml
index 438c68d94..0419ff70c 100644
--- a/linphone-desktop/ui/modules/Linphone/Chat/Chat.qml
+++ b/linphone-desktop/ui/modules/Linphone/Chat/Chat.qml
@@ -150,7 +150,7 @@ Rectangle {
               // Cast section to integer because Qt converts the
               // sectionDate in string!!!
               text: new Date(section).toLocaleDateString(
-                Qt.locale(App.locale())
+                Qt.locale(App.locale)
               )
             }
           }
@@ -237,7 +237,7 @@ Rectangle {
               color: ChatStyle.entry.time.color
               font.pointSize: ChatStyle.entry.time.fontSize
               text: $chatEntry.timestamp.toLocaleString(
-                Qt.locale(App.locale()),
+                Qt.locale(App.locale),
                 'hh:mm'
               )
               verticalAlignment: Text.AlignVCenter
diff --git a/linphone-desktop/ui/modules/Linphone/Timeline.qml b/linphone-desktop/ui/modules/Linphone/Timeline.qml
index c9c56f0ad..a312a201e 100644
--- a/linphone-desktop/ui/modules/Linphone/Timeline.qml
+++ b/linphone-desktop/ui/modules/Linphone/Timeline.qml
@@ -160,7 +160,7 @@ ColumnLayout {
           anchors.fill: parent
           sourceComponent: TooltipArea {
             text: $timelineEntry.timestamp.toLocaleString(
-              Qt.locale(App.locale()),
+              Qt.locale(App.locale),
               Locale.ShortFormat
             )
           }
diff --git a/linphone-desktop/ui/scripts/Utils/utils.js b/linphone-desktop/ui/scripts/Utils/utils.js
index 3289056be..d79a05e60 100644
--- a/linphone-desktop/ui/scripts/Utils/utils.js
+++ b/linphone-desktop/ui/scripts/Utils/utils.js
@@ -230,7 +230,7 @@ function _indexFinder (array, cb, context) {
   var length = array.length
 
   for (var i = 0; i < length; i++) {
-    if (cb(array[index], index, array)) {
+    if (cb(array[i], i, array)) {
       return i
     }
   }
@@ -274,6 +274,12 @@ function basename (str) {
 
 // -----------------------------------------------------------------------------
 
+function capitalizeFirstLetter (str) {
+  return str.charAt(0).toUpperCase() + str.slice(1)
+}
+
+// -----------------------------------------------------------------------------
+
 function dirname (str) {
   var str2 = str
   var length = str2.length - 1
@@ -342,6 +348,15 @@ function find (obj, cb, context) {
 
 // -----------------------------------------------------------------------------
 
+function findIndex (array, cb, context) {
+  cb = _computeOptimizedCb(cb, context)
+
+  var key = _indexFinder(array, cb, context)
+  return key != null && key !== -1 ? key : null
+}
+
+// -----------------------------------------------------------------------------
+
 function formatElapsedTime (seconds) {
   seconds = parseInt(seconds, 10)
 
diff --git a/linphone-desktop/ui/views/App/Settings/SettingsUi.qml b/linphone-desktop/ui/views/App/Settings/SettingsUi.qml
index a32a9b16f..a34586b3b 100644
--- a/linphone-desktop/ui/views/App/Settings/SettingsUi.qml
+++ b/linphone-desktop/ui/views/App/Settings/SettingsUi.qml
@@ -1,6 +1,8 @@
 import QtQuick 2.7
 
 import Common 1.0
+import Linphone 1.0
+import Utils 1.0
 
 import App.Styles 1.0
 
@@ -24,10 +26,49 @@ TabContainer {
           label: qsTr('languagesLabel')
 
           ComboBox {
-            model: ListModel {
-              ListElement { key: 'English'; value: 0 }
-              ListElement { key: 'Français'; value: 1 }
+            function _getAvailableLocales () {
+              var locales = []
+
+              App.availableLocales.forEach(function (locale) {
+                locales.push({
+                  key: Utils.capitalizeFirstLetter(locale.nativeLanguageName),
+                  value: locale.name
+                })
+              })
+
+              return locales.sort(function (a, b) {
+                return a > b
+              })
             }
+
+            model: ListModel {}
+
+            Component.onCompleted: {
+              var locales = _getAvailableLocales()
+
+              model.append({
+                key: qsTr('systemLocale'),
+                value: ''
+              })
+              locales.forEach(function (locale) {
+                model.append(locale)
+              })
+
+              var locale = App.configLocale
+              if (!locale.length) {
+                currentIndex = 0
+                return
+              }
+
+              var value = Qt.locale(locale).name
+              var index = Utils.findIndex(locales, function (locale) {
+                return locale.value === value
+              })
+
+              currentIndex = index != null ? index + 1 : 0
+            }
+
+            onActivated: App.configLocale = model.get(index).value
           }
         }
       }