diff --git a/app/src/main/cpp/MicroPhoto.cpp b/app/src/main/cpp/MicroPhoto.cpp
index 0f6c3b6e..5a307ab8 100644
--- a/app/src/main/cpp/MicroPhoto.cpp
+++ b/app/src/main/cpp/MicroPhoto.cpp
@@ -315,6 +315,7 @@ Java_com_xypower_mpapp_MicroPhotoService_init(
     CPhoneDevice* device = new CPhoneDevice(vm, pThis, appPathStr, NETID_UNSET, versionCode);
     device->SetListener(pTerminal);
     device->UpdateSignalLevel(signalLevel);
+    device->UpdateSimcard(simcardStr);
 
     pTerminal->InitServerInfo(appPathStr, cmdidStr, ipStr, port, udpOrTcp, encryptData);
     // pTerminal->SetPacketSize(1 * 1024);	// 1K
diff --git a/app/src/main/cpp/PhoneDevice.cpp b/app/src/main/cpp/PhoneDevice.cpp
index 527745bb..7b115eac 100644
--- a/app/src/main/cpp/PhoneDevice.cpp
+++ b/app/src/main/cpp/PhoneDevice.cpp
@@ -376,8 +376,15 @@ bool CPhoneDevice::QuerySystemProperties(std::map<std::string, std::string>& pro
         }
         else if (it->first == PROP_IMEI)
         {
-            __system_property_get("phone.imei", value);
-            it->second = value;
+            if (m_simcard.empty())
+            {
+                __system_property_get("phone.imei", value);
+                it->second = value;
+            }
+            else
+            {
+                it->second = m_simcard;
+            }
         }
         else if (it->first == PROP_OPERATION_TEMP)
         {
@@ -1426,4 +1433,9 @@ void CPhoneDevice::UpdateSignalLevel(int signalLevel)
 {
     m_signalLevel = signalLevel;
     m_signalLevelUpdateTime = time(NULL);
+}
+
+void CPhoneDevice::UpdateSimcard(const std::string& simcard)
+{
+    m_simcard = simcard;
 }
\ No newline at end of file
diff --git a/app/src/main/cpp/PhoneDevice.h b/app/src/main/cpp/PhoneDevice.h
index b3b550e5..e05a10f2 100644
--- a/app/src/main/cpp/PhoneDevice.h
+++ b/app/src/main/cpp/PhoneDevice.h
@@ -202,6 +202,7 @@ public:
 	void UpdatePosition(double lon, double lat, double radius, time_t ts);
 	bool OnVideoReady(bool result, const char* path, unsigned int photoId);
 	void UpdateSignalLevel(int signalLevel);
+	void UpdateSimcard(const std::string& simcard);
 
 protected:
 
@@ -298,6 +299,8 @@ protected:
 	int m_signalLevel;
 	time_t m_signalLevelUpdateTime;
 
+	std::string m_simcard;
+
 };