diff --git a/libs/microbit-bluetooth/bluetooth.cpp b/libs/microbit-bluetooth/bluetooth.cpp
index 594e5727..1bb5bdbd 100644
--- a/libs/microbit-bluetooth/bluetooth.cpp
+++ b/libs/microbit-bluetooth/bluetooth.cpp
@@ -30,4 +30,13 @@ namespace bluetooth {
     void startTemperatureService() {    
         new MicroBitTemperatureService(*uBit.ble, uBit.thermometer);        
     }
+
+    /**
+    *  Starts the magnetometer service
+    */
+    //% help=bluetooth/start-magnetometer-service
+    //% blockId=bluetooth_start_magnetometer_service block="bluetooth magnetometer service"
+    void startMagnetometerService() {    
+        new MicroBitMagnetometerService(*uBit.ble, uBit.compass); 
+    }
 }
diff --git a/libs/microbit-bluetooth/shims.d.ts b/libs/microbit-bluetooth/shims.d.ts
index d96b38f8..37fc827c 100644
--- a/libs/microbit-bluetooth/shims.d.ts
+++ b/libs/microbit-bluetooth/shims.d.ts
@@ -25,6 +25,13 @@ declare namespace bluetooth {
     //% help=bluetooth/start-temperature-service
     //% blockId=bluetooth_start_temperature_service block="bluetooth temperature service" shim=bluetooth::startTemperatureService
     function startTemperatureService(): void;
+
+    /**
+     *  Starts the magnetometer service
+     */
+    //% help=bluetooth/start-magnetometer-service
+    //% blockId=bluetooth_start_magnetometer_service block="bluetooth magnetometer service" shim=bluetooth::startMagnetometerService
+    function startMagnetometerService(): void;
 }
 
 // Auto-generated. Do not edit. Really.
diff --git a/sim/libmbit.ts b/sim/libmbit.ts
index 4a386ceb..0b59481c 100644
--- a/sim/libmbit.ts
+++ b/sim/libmbit.ts
@@ -624,6 +624,9 @@ namespace pxsim.bluetooth {
     export function startTemperatureService(): void {
         // TODO
     }
+    export function startMagnetometerService(): void {
+        // TODO
+    }
 }
 
 namespace pxsim.images {