diff --git a/telephony/cellular_data/include/telephony_data.h b/telephony/cellular_data/include/telephony_data.h
index 801f8e819..502beb9e3 100755
--- a/telephony/cellular_data/include/telephony_data.h
+++ b/telephony/cellular_data/include/telephony_data.h
@@ -13,8 +13,14 @@
  * limitations under the License.
  */
 
-#ifndef NATIVE_TELEPHONY_DATA_API_H
-#define NATIVE_TELEPHONY_DATA_API_H
+/**
+ * @addtogroup Telephony
+ * @{
+ *
+ * @brief Provides C interface for the telephony cellular data.
+ *
+ * @since 13
+ */
 
 /**
  * @file telephony_data.h
@@ -27,6 +33,9 @@
  * @since 13
  */
 
+#ifndef NATIVE_TELEPHONY_DATA_API_H
+#define NATIVE_TELEPHONY_DATA_API_H
+
 #include <stdint.h>
 
 #ifdef __cplusplus
@@ -47,3 +56,4 @@ int32_t OH_Telephony_GetDefaultCellularDataSlotId(void);
 #endif
 
 #endif // NATIVE_TELEPHONY_DATA_API_H
+/** @} */
diff --git a/telephony/core_service/include/telephony_radio.h b/telephony/core_service/include/telephony_radio.h
index 26746d4be..11d6a809b 100755
--- a/telephony/core_service/include/telephony_radio.h
+++ b/telephony/core_service/include/telephony_radio.h
@@ -13,8 +13,14 @@
  * limitations under the License.
  */
 
-#ifndef NATIVE_TELEPHONY_RADIO_API_H
-#define NATIVE_TELEPHONY_RADIO_API_H
+/**
+ * @addtogroup Telephony
+ * @{
+ *
+ * @brief Provides C interface for the telephony radio.
+ *
+ * @since 13
+ */
 
 /**
  * @file telephony_radio.h
@@ -27,6 +33,9 @@
  * @since 13
  */
 
+#ifndef NATIVE_TELEPHONY_RADIO_API_H
+#define NATIVE_TELEPHONY_RADIO_API_H
+
 #include "telephony_radio_type.h"
 #include "stdint.h"
 
@@ -72,3 +81,4 @@ Telephony_RadioResult OH_Telephony_GetNetworkStateForSlot(int32_t slotId, Teleph
 #endif
 
 #endif // NATIVE_TELEPHONY_RADIO_API_H
+/** @} */
diff --git a/telephony/core_service/include/telephony_radio_type.h b/telephony/core_service/include/telephony_radio_type.h
index 15877c912..72dc1aa81 100755
--- a/telephony/core_service/include/telephony_radio_type.h
+++ b/telephony/core_service/include/telephony_radio_type.h
@@ -13,8 +13,14 @@
  * limitations under the License.
  */
 
-#ifndef NATIVE_TELEPHONY_RADIO_TYPE_H
-#define NATIVE_TELEPHONY_RADIO_TYPE_H
+/**
+ * @addtogroup Telephony
+ * @{
+ *
+ * @brief Provides the data structures for the C APIs of the the telephony radio.
+ *
+ * @since 13
+ */
 
 /**
  * @file telephony_radio_type.h
@@ -27,6 +33,9 @@
  * @since 13
  */
 
+#ifndef NATIVE_TELEPHONY_RADIO_TYPE_H
+#define NATIVE_TELEPHONY_RADIO_TYPE_H
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -155,3 +164,4 @@ typedef struct {
 #endif
 
 #endif // NATIVE_TELEPHONY_RADIO_TYPE_H
+/** @} */