diff --git a/services/src/telephony_state_registry_service.cpp b/services/src/telephony_state_registry_service.cpp
index 4f77a3e73c10aef6fadc05f24284788a7bf28707..486ff32549efb4b3e8864233e9e500a84715f23b 100644
--- a/services/src/telephony_state_registry_service.cpp
+++ b/services/src/telephony_state_registry_service.cpp
@@ -369,6 +369,9 @@ int32_t TelephonyStateRegistryService::RegisterStateChange(
         record.mask_ = mask;
         record.bundleName_ = bundleName;
         record.telephonyObserver_ = telephonyObserver;
+        TELEPHONY_LOGI("zjc TelephonyStateRegistryService::RegisterStateChange pid_ = %{public}d", pid);
+        TELEPHONY_LOGI("zjc TelephonyStateRegistryService::RegisterStateChange slotId_ = %{public}d", slotId);
+        TELEPHONY_LOGI("zjc TelephonyStateRegistryService::RegisterStateChange mask_ = %{public}d", mask);
         stateRecords_.push_back(record);
     }
 
@@ -385,7 +388,11 @@ int32_t TelephonyStateRegistryService::UnregisterStateChange(
     int32_t result = TELEPHONY_STATE_UNREGISTRY_DATA_NOT_EXIST;
     std::vector<TelephonyStateRegistryRecord>::iterator it;
     for (it = stateRecords_.begin(); it != stateRecords_.end(); ++it) {
+        TELEPHONY_LOGI("zjc TelephonyStateRegistryService::UnregisterStateChange pid = %{public}d", pid);
+        TELEPHONY_LOGI("zjc TelephonyStateRegistryService::UnregisterStateChange slotId = %{public}d", slotId);
+        TELEPHONY_LOGI("zjc TelephonyStateRegistryService::UnregisterStateChange mask = %{public}d", mask);
         if (it->slotId_ == slotId && it->mask_ == mask && it->pid_ == pid) {
+            TELEPHONY_LOGI("zjc TelephonyStateRegistryService::UnregisterStateChange start");
             stateRecords_.erase(it);
             result = TELEPHONY_SUCCESS;
             break;