diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index dc90962b..52be2754 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -101,7 +101,7 @@ public class MpMasterService extends Service {
     private String mCmdid = "";
     private NotificationManager mNotificationManager;
     private int mQuickHeartbeatDuration = 60; // Unit: second
-    private int mHeartbeatDuration = 600; // 10m = 10 * 60s
+    private int mHeartbeatDuration = 600; // Unit: second 10m = 10 * 60s
 
     private long mTimeForKeepingLogs = 86400000 * 15;   // 15 days
 
@@ -471,6 +471,9 @@ public class MpMasterService extends Service {
         }
 
         MicroPhotoContext.AppConfig appConfig = MicroPhotoContext.getMpAppConfig(getApplicationContext());
+        if (appConfig.heartbeat > 0) {
+            mMpHeartbeatDuration = appConfig.heartbeat;
+        }
 
         logger.warning("Start Mntn report: " + masterUrl + " MntnMode=" + (mMntnMode ? "1" : "0") + " QuickHB=" + (mQuickHbMode ? "1" : "0"));
 
@@ -631,7 +634,7 @@ public class MpMasterService extends Service {
 
                 if (zeroPoint + closestTime * 1000 > currentTimeMs + mMpHeartbeatDuration * 60000) {
                     keepAlive = true;
-                    registerHeartbeatTimer(currentTimeMs + timeout * 1000, keepAlive);
+                    registerHeartbeatTimer(currentTimeMs + mMpHeartbeatDuration * 60000, keepAlive);
                 } else {
                     registerHeartbeatTimer(zeroPoint + closestTime * 1000, keepAlive);
                 }
@@ -1001,7 +1004,6 @@ public class MpMasterService extends Service {
             Method method1 = telephonyManager.getClass().getDeclaredMethod("setDataEnabled", boolean.class);
             method1.invoke(telephonyManager, true);
         } catch (Exception e) {
-            // Log.e(TAG, "wjz debug setDefaultDataSubId: error is " + e.getMessage());
             e.printStackTrace();
         }
     }
@@ -1011,8 +1013,8 @@ public class MpMasterService extends Service {
         try {
             Method method = subscriptionManager.getClass().getDeclaredMethod("getDefaultDataSubscriptionId");
             return (int) method.invoke(subscriptionManager);
-        } catch (Exception e) {
-            Log.e(TAG, "wjz debug getDefaultDataSubId: error is " + e.getMessage());
+        } catch (Exception ex) {
+            ex.printStackTrace();
         }
         return 0;
     }