diff --git a/radio/1.2/vts/functional/radio_hidl_hal_api.cpp b/radio/1.2/vts/functional/radio_hidl_hal_api.cpp
index 3510163..730d969 100644
--- a/radio/1.2/vts/functional/radio_hidl_hal_api.cpp
+++ b/radio/1.2/vts/functional/radio_hidl_hal_api.cpp
@@ -753,6 +753,56 @@
     ASSERT_TRUE(CheckAnyOfErrors(
         radioRsp_v1_2->rspInfo.error,
         {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE, RadioError::NOT_PROVISIONED}));
+
+    // Check the mcc [0, 999] and mnc [0, 999].
+    string hidl_mcc;
+    string hidl_mnc;
+    int totalIdentitySizeExpected = 1;
+    ::android::hardware::radio::V1_2::CellIdentity cellIdentities =
+        radioRsp_v1_2->dataRegResp.cellIdentity;
+    CellInfoType cellInfoType = cellIdentities.cellInfoType;
+
+    if (cellInfoType == CellInfoType::NONE) {
+        // All the fields are 0
+        totalIdentitySizeExpected = 0;
+    } else if (cellInfoType == CellInfoType::GSM) {
+        EXPECT_EQ(1, cellIdentities.cellIdentityGsm.size());
+        ::android::hardware::radio::V1_2::CellIdentityGsm cig = cellIdentities.cellIdentityGsm[0];
+        hidl_mcc = cig.base.mcc;
+        hidl_mnc = cig.base.mnc;
+    } else if (cellInfoType == CellInfoType::LTE) {
+        EXPECT_EQ(1, cellIdentities.cellIdentityLte.size());
+        ::android::hardware::radio::V1_2::CellIdentityLte cil = cellIdentities.cellIdentityLte[0];
+        hidl_mcc = cil.base.mcc;
+        hidl_mnc = cil.base.mnc;
+    } else if (cellInfoType == CellInfoType::WCDMA) {
+        EXPECT_EQ(1, cellIdentities.cellIdentityWcdma.size());
+        ::android::hardware::radio::V1_2::CellIdentityWcdma ciw =
+            cellIdentities.cellIdentityWcdma[0];
+        hidl_mcc = ciw.base.mcc;
+        hidl_mnc = ciw.base.mnc;
+    } else if (cellInfoType == CellInfoType::TD_SCDMA) {
+        EXPECT_EQ(1, cellIdentities.cellIdentityTdscdma.size());
+        ::android::hardware::radio::V1_2::CellIdentityTdscdma cit =
+            cellIdentities.cellIdentityTdscdma[0];
+        hidl_mcc = cit.base.mcc;
+        hidl_mnc = cit.base.mnc;
+    } else {
+        // CellIndentityCdma has no mcc and mnc.
+        EXPECT_EQ(CellInfoType::CDMA, cellInfoType);
+        EXPECT_EQ(1, cellIdentities.cellIdentityCdma.size());
+    }
+
+    // Check only one CellIdentity is size 1, and others must be 0.
+    EXPECT_EQ(totalIdentitySizeExpected,
+              cellIdentities.cellIdentityGsm.size() + cellIdentities.cellIdentityCdma.size() +
+                  cellIdentities.cellIdentityLte.size() + cellIdentities.cellIdentityWcdma.size() +
+                  cellIdentities.cellIdentityTdscdma.size());
+
+    int mcc = stoi(hidl_mcc);
+    int mnc = stoi(hidl_mnc);
+    EXPECT_TRUE(mcc >= 0 && mcc <= 999);
+    EXPECT_TRUE(mnc >= 0 && mnc <= 999);
 }
 
 /*
diff --git a/radio/1.2/vts/functional/radio_hidl_hal_utils_v1_2.h b/radio/1.2/vts/functional/radio_hidl_hal_utils_v1_2.h
index 4712202..2e65bfb 100644
--- a/radio/1.2/vts/functional/radio_hidl_hal_utils_v1_2.h
+++ b/radio/1.2/vts/functional/radio_hidl_hal_utils_v1_2.h
@@ -56,6 +56,9 @@
 
     RadioResponseInfo rspInfo;
 
+    // Data
+    ::android::hardware::radio::V1_2::DataRegStateResult dataRegResp;
+
     RadioResponse_v1_2(RadioHidlTest_v1_2& parent_v1_2);
     virtual ~RadioResponse_v1_2() = default;
 
diff --git a/radio/1.2/vts/functional/radio_response.cpp b/radio/1.2/vts/functional/radio_response.cpp
index c5c7b14..e91a557 100644
--- a/radio/1.2/vts/functional/radio_response.cpp
+++ b/radio/1.2/vts/functional/radio_response.cpp
@@ -756,8 +756,9 @@
 
 Return<void> RadioResponse_v1_2::getDataRegistrationStateResponse_1_2(
     const RadioResponseInfo& info,
-    const ::android::hardware::radio::V1_2::DataRegStateResult& /*dataRegResponse*/) {
+    const ::android::hardware::radio::V1_2::DataRegStateResult& dataRegResponse) {
     rspInfo = info;
+    dataRegResp = dataRegResponse;
     parent_v1_2.notify(info.serial);
     return Void();
 }