diff --git a/qml/pages/NewChatPage.qml b/qml/pages/NewChatPage.qml
index 917d7ea..b9e5aba 100644
--- a/qml/pages/NewChatPage.qml
+++ b/qml/pages/NewChatPage.qml
@@ -21,12 +21,14 @@ import Sailfish.Silica 1.0
 import "../components"
 import "../js/twemoji.js" as Emoji
 import "../js/functions.js" as Functions
+import "../js/debug.js" as Debug
 
 Page {
     id: newChatPage
     allowedOrientations: Orientation.All
 
     property bool isLoading: true;
+    property bool syncSupported: false;
 
     function resetFocus() {
         contactsSearchField.focus = false;
@@ -39,7 +41,6 @@ Page {
         newChatPage.isLoading = false;
     }
 
-
     onStatusChanged: {
         if (status === PageStatus.Active) {
             reloadContacts();
@@ -54,13 +55,26 @@ Page {
         }
     }
 
+    Component.onCompleted: {
+        // With Sailfish OS 4 we can't get up-to-date contacts andmore. We might need to enter Sailjail eventually...
+        // Details see https://forum.sailfishos.org/t/4-0-1-45-non-jailed-contacts-sqlite-database-no-longer-updated/4724
+        var sailfishOSVersion = fernschreiberUtils.getSailfishOSVersion().split(".");
+        if (parseInt(sailfishOSVersion[0]) < 4) {
+            Debug.log("Sailfish OS version 3.x - contact sync should still be possible...")
+            newChatPage.syncSupported = true;
+        } else {
+            Debug.log("Sailfish OS version 4.x - contact sync no longer supported...")
+            newChatPage.syncSupported = false;
+        }
+    }
+
     SilicaFlickable {
         id: newChatContainer
         contentHeight: newChatPage.height
         anchors.fill: parent
 
         PullDownMenu {
-            visible: contactsModel.canSynchronizeContacts()
+            visible: contactsModel.canSynchronizeContacts() && newChatPage.syncSupported
             MenuItem {
                 onClicked: {
                     newChatPage.isLoading = true;
diff --git a/src/fernschreiberutils.cpp b/src/fernschreiberutils.cpp
index b7d9af9..0f85cd8 100644
--- a/src/fernschreiberutils.cpp
+++ b/src/fernschreiberutils.cpp
@@ -29,6 +29,7 @@
 #include <QDateTime>
 #include <QGeoCoordinate>
 #include <QGeoLocation>
+#include <QSysInfo>
 
 #define DEBUG_MODULE FernschreiberUtils
 #include "debuglog.h"
@@ -246,6 +247,11 @@ bool FernschreiberUtils::supportsGeoLocation()
     return this->geoPositionInfoSource;
 }
 
+QString FernschreiberUtils::getSailfishOSVersion()
+{
+    return QSysInfo::productVersion();
+}
+
 void FernschreiberUtils::handleAudioRecorderStatusChanged(QMediaRecorder::Status status)
 {
     LOG("Audio recorder status changed:" << status);
diff --git a/src/fernschreiberutils.h b/src/fernschreiberutils.h
index ce3bc3b..a8ee7ea 100644
--- a/src/fernschreiberutils.h
+++ b/src/fernschreiberutils.h
@@ -52,6 +52,7 @@ public:
     Q_INVOKABLE void startGeoLocationUpdates();
     Q_INVOKABLE void stopGeoLocationUpdates();
     Q_INVOKABLE bool supportsGeoLocation();
+    Q_INVOKABLE QString getSailfishOSVersion();
 
 signals:
     void voiceNoteDurationChanged(qlonglong duration);