diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/ble/PebbleLESupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/ble/PebbleLESupport.java
index 6fa3d2c2..883cc13d 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/ble/PebbleLESupport.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/ble/PebbleLESupport.java
@@ -10,6 +10,8 @@ import java.io.IOException;
 import java.io.PipedInputStream;
 import java.io.PipedOutputStream;
 
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
+
 public class PebbleLESupport {
     private static final Logger LOG = LoggerFactory.getLogger(PebbleLESupport.class);
     private final BluetoothDevice mBtDevice;
@@ -19,6 +21,7 @@ public class PebbleLESupport {
     private PipedInputStream mPipedInputStream;
     private PipedOutputStream mPipedOutputStream;
     private int mMTU = 20;
+    private int mMTULimit = Integer.MAX_VALUE;
     boolean mIsConnected = false;
 
     public PebbleLESupport(Context context, final BluetoothDevice btDevice, PipedInputStream pipedInputStream, PipedOutputStream pipedOutputStream) throws IOException {
@@ -31,6 +34,9 @@ public class PebbleLESupport {
         } catch (IOException e) {
             LOG.warn("could not connect input stream");
         }
+        mMTULimit = GBApplication.getPrefs().getInt("pebble_mtu_limit", 512);
+        mMTULimit = Math.max(mMTULimit, 20);
+        mMTULimit = Math.min(mMTULimit, 512);
 
         mPebbleGATTServer = new PebbleGATTServer(this, context, mBtDevice);
         if (mPebbleGATTServer.initialize()) {
@@ -99,7 +105,7 @@ public class PebbleLESupport {
     }
 
     void setMTU(int mtu) {
-        mMTU = mtu;
+        mMTU = Math.min(mtu, mMTULimit);
     }
 
     private class PipeReader extends Thread {
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 09c215ed..a9d2e3e2 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -120,6 +120,8 @@
     <string name="pref_summary_pebble_forceuntested">Enable features that are untested. ENABLE ONLY IF YOU KNOW WHAT YOU ARE DOING!</string>
     <string name="pref_title_pebble_forcele">Always prefer BLE</string>
     <string name="pref_summary_pebble_forcele">Use experimental Pebble LE support for all Pebbles instead of BT classic, requires paring a "Pebble LE" after non LE had been connected once</string>
+    <string name="pref_title_pebble_mtu_limit">Pebble 2/LE GATT MTU limit</string>
+    <string name="pref_summary_pebble_mtu_limit">If your Pebble 2/Pebble LE does not work as expected, try this setting to limit the MTU (valid range 20–512)</string>
     <string name="pref_title_pebble_enable_applogs">Enable Watch App Logging</string>
     <string name="pref_summary_pebble_enable_applogs">Will cause logs from watch apps to be logged by Gadgetbridge (requires reconnect)</string>
 
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index efe3e4c7..b721a88f 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -341,6 +341,13 @@
                     android:key="pebble_force_le"
                     android:summary="@string/pref_summary_pebble_forcele"
                     android:title="@string/pref_title_pebble_forcele" />
+                <EditTextPreference
+                    android:inputType="number"
+                    android:key="pebble_mtu_limit"
+                    android:maxLength="3"
+                    android:defaultValue="512"
+                    android:title="@string/pref_title_pebble_mtu_limit"
+                    android:summary="@string/pref_summary_pebble_mtu_limit" />
                 <CheckBoxPreference
                     android:defaultValue="false"
                     android:key="pebble_enable_applogs"