diff --git a/code/application/source/cardv/SrcCode/UIWnd/LVGL_SPORTCAM/UIFlowLVGL/UIFlowMenuCommonConfirm/UIFlowMenuCommonConfirmEventCallback.c b/code/application/source/cardv/SrcCode/UIWnd/LVGL_SPORTCAM/UIFlowLVGL/UIFlowMenuCommonConfirm/UIFlowMenuCommonConfirmEventCallback.c
index d53202fce..4986586f0 100755
--- a/code/application/source/cardv/SrcCode/UIWnd/LVGL_SPORTCAM/UIFlowLVGL/UIFlowMenuCommonConfirm/UIFlowMenuCommonConfirmEventCallback.c
+++ b/code/application/source/cardv/SrcCode/UIWnd/LVGL_SPORTCAM/UIFlowLVGL/UIFlowMenuCommonConfirm/UIFlowMenuCommonConfirmEventCallback.c
@@ -631,7 +631,7 @@ void message_box_confirm_msg_event_callback(lv_obj_t* obj, lv_event_t event)
 	/* this makes message box closing animation can be completed before closing screen */
 	case LV_EVENT_DELETE:
 	{
-		printf("[*x][%s]LV_EVENT_DELETE\n", __FUNCTION__);
+		//printf("[%s]LV_EVENT_DELETE\n", __FUNCTION__);
 		/* reset pointer of msgbox */
 		msgbox = NULL;
 		if (Confirm_label)
@@ -649,7 +649,7 @@ void message_box_confirm_msg_event_callback(lv_obj_t* obj, lv_event_t event)
 	// case LV_EVENT_KEY:
 	case LV_USER_EVENT_KEY_RELEASE:
 	{
-		printf("[*x][%s]LV_USER_EVENT_KEY_RELEASE\n", __FUNCTION__);
+		//printf("[%s]LV_USER_EVENT_KEY_RELEASE\n", __FUNCTION__);
 		uint32_t* key = (uint32_t*)lv_event_get_data();
 
 		/* handle key event */
@@ -669,10 +669,10 @@ void message_box_confirm_msg_event_callback(lv_obj_t* obj, lv_event_t event)
 
 	/* triggered by button release */
 	case LV_EVENT_VALUE_CHANGED:
-		printf("[*x][%s]LV_EVENT_VALUE_CHANGED\n", __FUNCTION__);
+		//printf("[%s]LV_EVENT_VALUE_CHANGED\n", __FUNCTION__);
 	case LV_EVENT_CLICKED:
 	{
-		printf("[*x][%s]LV_EVENT_CLICKED\n", __FUNCTION__);
+		//printf("[%s]LV_EVENT_CLICKED\n", __FUNCTION__);
 		UIFlowMenuCommonConfirm_MessageBox_ValueChanged(obj, (uint32_t*)lv_event_get_data());
 		break;
 	}
diff --git a/code/application/source/sf_app/code/source/4gMng/sf_eg91_gps.c b/code/application/source/sf_app/code/source/4gMng/sf_eg91_gps.c
index 1a04f631b..520416190 100755
--- a/code/application/source/sf_app/code/source/4gMng/sf_eg91_gps.c
+++ b/code/application/source/sf_app/code/source/4gMng/sf_eg91_gps.c
@@ -80,7 +80,7 @@ SINT32  eg91_gps_greendate_Get(SF_FN_PARAM_S *pfnParam,SF_PARA_TIME_S *pNowTime)
 	  SF_CHAR dataStr[SF_TTYUSB_RECV_MAX] = { 0 };
 	  MODULE_SERVER_AUTHEN_E enATcmdType = MODULE_HTTP_AUTHEN_AT_QIACT_PRE;
 	  
-	  while(sts)
+	  while(sts && sf_app_while_flag())
 	  {
 		 if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		 {	  
@@ -333,7 +333,7 @@ SINT32 eg91_gps_Isupdate(SF_FN_PARAM_S *pfnParam,UINT8 *pIsupdate,SF_PARA_TIME_S
 	
     SIM_SEARCH_GPS_e enMmcLocation = SIM_SEARCH_GPS_FIRST;
 
-	 while(sts)
+	 while(sts && sf_app_while_flag())
 	 {
 		if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		{	 
@@ -464,7 +464,7 @@ SINT32 eg91_gps_search(SF_FN_PARAM_S *pfnParam,SF_PARA_TIME_S *pNowTime,UINT8 au
 	
     SIM_SEARCH_GPS_e enMmcLocation = SIM_SEARCH_GPS_FIRST;
 	
-    while(sts)
+    while(sts && sf_app_while_flag())
 	 {
 		if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		{	 
@@ -760,7 +760,7 @@ SINT32 eg91_gps_preconfig(SF_FN_PARAM_S *pfnParam)
 
     SIM_SEARCH_GPS_e enMmcLocation = SIM_SEARCH_GPS_FIRST;
 
-    while(sts)
+    while(sts && sf_app_while_flag())
 	 {
 		if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		{	 
@@ -910,7 +910,7 @@ SINT32 eg91_gps_search_result(SF_FN_PARAM_S *pfnParam)
 
     SIM_SEARCH_GPS_e enMmcLocation = SIM_SEARCH_GPS_LOC;
 
-    while(sts)
+    while(sts && sf_app_while_flag())
 	 {
 		if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		{	 
diff --git a/code/application/source/sf_app/code/source/4gMng/sf_eg91_server.c b/code/application/source/sf_app/code/source/4gMng/sf_eg91_server.c
index 3b98d5156..1402318a1 100644
--- a/code/application/source/sf_app/code/source/4gMng/sf_eg91_server.c
+++ b/code/application/source/sf_app/code/source/4gMng/sf_eg91_server.c
@@ -303,7 +303,7 @@ SINT32 eg91_http_config(SF_FN_PARAM_S *pfnParam, UINT8 sslOn, UINT8 autoReqHead)
 	 SF_PDT_PARAM_STATISTICS_S *pstParamInfo = pfnParam->pstaticParam;
 
 	
-	 while(1)
+	 while(sf_app_while_flag())
 	 {
 		 if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		{	 
@@ -452,7 +452,7 @@ SINT32 eg91_http_config(SF_FN_PARAM_S *pfnParam, UINT8 sslOn, UINT8 autoReqHead)
 	 SF_CHAR acmStr[40] = {0};
 	 MODULE_SERVER_AUTHEN_E enATcmdType = MODULE_HTTP_AUTHEN_AT_QIACT;
 	 SF_PDT_PARAM_STATISTICS_S *pStaticParam = pfnParam->pstaticParam;/*          Added by MaxLi 2022/03/02--15:5:56*/
-	 while(sts)
+	 while(sts && sf_app_while_flag())
 	 {
 		if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		{	 
@@ -726,7 +726,7 @@ SINT32 eg91_http_config(SF_FN_PARAM_S *pfnParam, UINT8 sslOn, UINT8 autoReqHead)
 	  MODULE_SERVER_SENDFILE_E enATcmdType = MODULE_SERVER_SENDFILE_AT_QHTTPCFG;
 	  SF_PDT_PARAM_STATISTICS_S *pStaticParam = pfnParam->pstaticParam;
 	  
-	  while(1)
+	  while(sf_app_while_flag())
 	  {
 		 if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		 {	  
@@ -962,7 +962,7 @@ SINT32  eg91_server_acm_open(SF_FN_PARAM_S *pfnParam)
   SF_CHAR tempStr[32] = { 0 };
   MODULE_SERVER_ACM_OPEN_E enATcmdType = MODULE_SERVER_ACM_OPEN_AT_QISTATE;
   SF_PDT_PARAM_STATISTICS_S *pStaticParam = pfnParam->pstaticParam;
-  while(sts)
+  while(sts && sf_app_while_flag())
   {
 	  if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 	 {
@@ -1250,7 +1250,7 @@ SINT32  eg91_server_acm_open(SF_FN_PARAM_S *pfnParam)
 	 UINT16 callTime = 0;
 	 SF_CHAR ttyData[SF_TTYUSB_RECV_MAX] = { 0 };
 	 MODULE_SERVER_ACM_WRITE_E enATcmdType = MODULE_SERVER_ACM_WRITE_AT_QISEND;
-	 while(sts)
+	 while(sts && sf_app_while_flag())
 	 {
 		 if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		   break;
@@ -1384,7 +1384,7 @@ SINT32  eg91_server_acm_open(SF_FN_PARAM_S *pfnParam)
 	 SF_CHAR ttyData[SF_TTYUSB_RECV_MAX] = { 0 };
 	 MODULE_SERVER_ACM_CLOSE_E enATcmdType = MODULE_SERVER_ACM_CLOSE_AT_QICLOSE;
  
-	 while(sts)
+	 while(sts && sf_app_while_flag())
 	 {
 		 if(SF_TRUE == pfnParam->pfn_AT_instruction_exit(0))
 		   break;