diff --git a/app/src/main/java/com/xypower/mpapp/MainActivity.java b/app/src/main/java/com/xypower/mpapp/MainActivity.java
index 400e8fd0..3b49fa16 100644
--- a/app/src/main/java/com/xypower/mpapp/MainActivity.java
+++ b/app/src/main/java/com/xypower/mpapp/MainActivity.java
@@ -138,6 +138,10 @@ public class MainActivity extends AppCompatActivity {
                     Intent resIntent = getPackageManager().getLaunchIntentForPackage(MicroPhotoContext.PACKAGE_NAME_MPRES);
                     resIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
                     resIntent.putExtra("initres", 1);
+                    String sn = MicroPhotoService.getSerialNumber();
+                    if (!TextUtils.isEmpty(sn)) {
+                        resIntent.putExtra("sn", sn);
+                    }
                     startActivity(resIntent);
                 }
             }