diff --git a/interfaces/innerkits/include/hril_types.h b/interfaces/innerkits/include/hril_types.h
index b1dcdd1c..37c478a9 100644
--- a/interfaces/innerkits/include/hril_types.h
+++ b/interfaces/innerkits/include/hril_types.h
@@ -405,6 +405,8 @@ static constexpr uint32_t HRIL_NETWORKS_SELECT_MODE = 0;
 inline const int32_t HRIL_SYSPARA_SIZE = 128;
 inline constexpr const char *HRIL_DEFAULT_SLOT_COUNT = "1";
 inline constexpr const char *HRIL_TEL_SIM_SLOT_COUNT = "const.telephony.slotCount";
+inline constexpr const char *HRIL_DEFAULT_VSIM_MODEM_COUNT = "0";
+inline constexpr const char *HRIL_VSIM_MODEM_COUNT_STR = "const.telephony.vsimModemCount";
 
 /** Interface token */
 inline const std::u16string HRIL_INTERFACE_TOKEN = u"ohos.telephony.hril";
diff --git a/services/hril/BUILD.gn b/services/hril/BUILD.gn
index f37a890f..384d7b71 100644
--- a/services/hril/BUILD.gn
+++ b/services/hril/BUILD.gn
@@ -12,6 +12,7 @@
 # limitations under the License.
 
 import("//build/ohos.gni")
+import("../../../core_service/telephony_core_service.gni")
 
 RIL_ADAPTER = "../../"
 RIL_HRIL = "../../services/hril/src"
@@ -45,6 +46,8 @@ ohos_shared_library("hril") {
     "LOG_DOMAIN = 0xD001F08",
   ]
 
+  defines += telephony_extra_defines
+
   deps = [ "$RIL_ADAPTER/interfaces/innerkits:hril_innerkits" ]
 
   external_deps = [
diff --git a/services/hril/include/hril_manager.h b/services/hril/include/hril_manager.h
index 1ea55814..c474b3cb 100644
--- a/services/hril/include/hril_manager.h
+++ b/services/hril/include/hril_manager.h
@@ -33,6 +33,9 @@
 
 namespace OHOS {
 namespace Telephony {
+inline const int32_t DUAL_SLOT_COUNT = 2;
+inline const int32_t MAX_SLOT_COUNT = 3;
+
 typedef enum : int32_t {
     RIL_REGISTER_IS_NONE = 0,
     RIL_REGISTER_IS_RUNNING,
diff --git a/services/hril/src/hril_manager.cpp b/services/hril/src/hril_manager.cpp
index e7d2c872..93576bfa 100644
--- a/services/hril/src/hril_manager.cpp
+++ b/services/hril/src/hril_manager.cpp
@@ -1025,7 +1025,16 @@ int32_t GetSimSlotCount()
 {
     char simSlotCount[HRIL_SYSPARA_SIZE] = { 0 };
     GetParameter(HRIL_TEL_SIM_SLOT_COUNT, HRIL_DEFAULT_SLOT_COUNT, simSlotCount, HRIL_SYSPARA_SIZE);
-    return std::atoi(simSlotCount);
+    int32_t simSlotCountNumber = std::atoi(simSlotCount);
+#ifdef OHOS_BUILD_ENABLE_TELEPHONY_VSIM
+    char vSimModemCount[HRIL_SYSPARA_SIZE] = { 0 };
+    GetParameter(HRIL_VSIM_MODEM_COUNT_STR, HRIL_DEFAULT_VSIM_MODEM_COUNT, vSimModemCount, HRIL_SYSPARA_SIZE);
+    int32_t vSimModemCountNumber = std::atoi(vSimModemCount);
+    if (simSlotCountNumber == DUAL_SLOT_COUNT && vSimModemCountNumber == MAX_SLOT_COUNT) {
+        simSlotCountNumber = MAX_SLOT_COUNT;
+    }
+#endif
+    return simSlotCountNumber;
 }
 
 static void HRilBootUpEventLoop()