diff --git a/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java b/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
index e75d5057..350bd739 100644
--- a/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
+++ b/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
@@ -182,9 +182,6 @@ public class MicroPhotoService extends Service {
 
     public static boolean isRunning = false;
 
-    FileOutputStream mAppRunningFile;
-    FileLock mAppLock;
-
     private ConnectivityManager mConnectivityManager = null;
     private ConnectivityManager.NetworkCallback mNetworkCallback = null;
 
@@ -280,40 +277,6 @@ public class MicroPhotoService extends Service {
             ex.printStackTrace();
         }
 
-        try {
-            final String appPath = MicroPhotoContext.buildMpAppDir(this);
-
-            File lockerFile = new File(appPath);
-            lockerFile = new File(lockerFile, "data/alive");
-            try {
-                lockerFile.mkdirs();
-            } catch (Exception ex) {
-                ex.printStackTrace();
-            }
-            lockerFile = new File(lockerFile, "running");
-            mAppRunningFile = new FileOutputStream(lockerFile);
-
-            for (int idx = 0; idx < 3; idx++) {
-                try {
-                    mAppLock = mAppRunningFile.getChannel().tryLock();
-                    if (mAppLock != null && mAppLock.isValid()) {
-                        infoLog("App Locked");
-                        break;
-                    }else {
-                        infoLog("Lock App Failed");
-                    }
-                    try {
-                        Thread.sleep(16);
-                    } catch (Exception ex) {
-                    }
-                } catch (Exception ex) {
-                    ex.printStackTrace();
-                }
-            }
-        } catch (Exception ex) {
-            ex.printStackTrace();
-        }
-
         mHander = new ServiceHandler();
 
         mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
@@ -379,17 +342,6 @@ public class MicroPhotoService extends Service {
     }
     @Override
     public void onDestroy() {
-        try {
-            if (mAppLock != null) {
-                mAppLock.close();
-            }
-            if (mAppRunningFile != null) {
-                mAppRunningFile.close();
-            }
-        } catch (Exception ex) {
-            ex.printStackTrace();
-        }
-
         mStateService = STATE_SERVICE.NOT_CONNECTED;
 
         infoLog("MicroPhotoService::onDestroy called");