diff --git a/frameworks/native/src/core_service_proxy.cpp b/frameworks/native/src/core_service_proxy.cpp
index c8f13678..925be32e 100644
--- a/frameworks/native/src/core_service_proxy.cpp
+++ b/frameworks/native/src/core_service_proxy.cpp
@@ -2518,7 +2518,7 @@ int32_t CoreServiceProxy::GetOpName(int32_t slotId, std::u16string &opname)
 
 int32_t CoreServiceProxy::GetMaxSimCount()
 {
-    return SIM_SLOT_COUNT;
+    return SIM_SLOT_COUNT_REAL;
 }
 
 int32_t CoreServiceProxy::SendEnvelopeCmd(int32_t slotId, const std::string &cmd)
diff --git a/interfaces/innerkits/include/telephony_types.h b/interfaces/innerkits/include/telephony_types.h
index 78796603..970f3bf3 100644
--- a/interfaces/innerkits/include/telephony_types.h
+++ b/interfaces/innerkits/include/telephony_types.h
@@ -26,6 +26,7 @@
 namespace OHOS {
 namespace Telephony {
 #define SIM_SLOT_COUNT GetMaxSlotCount<int32_t>()
+#define SIM_SLOT_COUNT_REAL GetRealMaxSlotCount<int32_t>()
 #define PREFERRED_NETWORK_TYPE GetPreferredNetworkType<int32_t>()
 #define VSIM_MODEM_COUNT GetVSimModemCount<int32_t>()
 #define IS_SUPPORT_VSIM (VSIM_MODEM_COUNT > 0)
@@ -41,6 +42,7 @@ inline const size_t MAX_PARAMETER_LENGTH = 100;
 inline const int32_t DUAL_SLOT_COUNT = 2;
 inline const int32_t MAX_SLOT_COUNT = 3;
 inline const int32_t VSIM_DEFAULT_VALUE = -1;
+inline int32_t maxRealSlotCount_ = 0;
 inline int32_t maxSlotCount_ = 0;
 inline int32_t vSimModemCount_ = VSIM_DEFAULT_VALUE;
 inline constexpr const char *SATELLITE_DEFAULT_VALUE = "0";
@@ -84,6 +86,17 @@ inline T GetMaxSlotCount()
     return maxSlotCount_;
 }
 
+template<typename T>
+inline T GetRealMaxSlotCount()
+{
+    if (maxRealSlotCount_ == 0) {
+        char realSimSlotCount[SYSPARA_SIZE] = { 0 };
+        GetParameter(TEL_SIM_SLOT_COUNT, DEFAULT_SLOT_COUNT, realSimSlotCount, SYSPARA_SIZE);
+        maxRealSlotCount_ = std::atoi(realSimSlotCount);
+    }
+    return maxRealSlotCount_;
+}
+
 template<typename T>
 inline T GetVSimModemCount()
 {