diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 6dc1094..304827f 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -34,6 +34,10 @@
             android:name=".ui.activities.SearchUserActivity"
             android:label="@string/activity_searchuser_title"/>
 
+        <!-- Notifications background refresh service -->
+        <service android:name=".data.services.NotificationsService"
+            android:exported="false"/>
+
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/org/communiquons/android/comunic/client/data/services/NotificationsService.java b/app/src/main/java/org/communiquons/android/comunic/client/data/services/NotificationsService.java
new file mode 100644
index 0000000..5f25119
--- /dev/null
+++ b/app/src/main/java/org/communiquons/android/comunic/client/data/services/NotificationsService.java
@@ -0,0 +1,72 @@
+package org.communiquons.android.comunic.client.data.services;
+
+import android.app.IntentService;
+import android.content.Intent;
+import android.support.annotation.Nullable;
+import android.util.Log;
+
+/**
+ * Notifications service
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 4/9/18.
+ */
+
+public class NotificationsService extends IntentService {
+
+    /**
+     * Debug tag
+     */
+    private static final String TAG = "NotificationsService";
+
+    /**
+     * Keep run status
+     */
+    private boolean run;
+
+    /**
+     * Public constructor
+     */
+    public NotificationsService(){
+        super("NotificationsService");
+    }
+
+    /**
+     * The IntentService calls this method from the default worker thread with
+     * the intent that started the service. When this method returns, IntentService
+     * stops the service, as appropriate.
+     */
+    @Override
+    protected void onHandleIntent(@Nullable Intent intent) {
+
+        Log.v(TAG, "Start service");
+
+        while(run){
+
+            try {
+                //Make a pause
+                Thread.sleep(2000);
+            } catch (InterruptedException e){
+                Thread.currentThread().interrupt();
+            }
+
+            Log.v(TAG, "Hey there, service !");
+
+        }
+
+        Log.v(TAG, "Stop service");
+
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        this.run = true;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        this.run = false;
+    }
+}
diff --git a/app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java b/app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java
index 7f3ca41..df19a2a 100644
--- a/app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java
+++ b/app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java
@@ -24,6 +24,7 @@ import org.communiquons.android.comunic.client.data.DatabaseHelper;
 import org.communiquons.android.comunic.client.data.UsersInfo.GetUsersHelper;
 import org.communiquons.android.comunic.client.data.conversations.ConversationsListHelper;
 import org.communiquons.android.comunic.client.data.friendsList.FriendRefreshLoopRunnable;
+import org.communiquons.android.comunic.client.data.services.NotificationsService;
 import org.communiquons.android.comunic.client.data.utils.UiUtils;
 import org.communiquons.android.comunic.client.ui.fragments.ConversationFragment;
 import org.communiquons.android.comunic.client.ui.fragments.ConversationsListFragment;
@@ -132,6 +133,10 @@ public class MainActivity extends AppCompatActivity
         friendsListRefreshThread = new Thread(
                 new FriendRefreshLoopRunnable(getApplicationContext(), dbHelper));
         friendsListRefreshThread.start();
+
+        //Start notification thread
+        Intent intent = new Intent(this, NotificationsService.class);
+        startService(intent);
     }
 
     @Override