diff --git a/radio/1.0/vts/functional/vts_test_util.cpp b/radio/1.0/vts/functional/vts_test_util.cpp
index 5b31acc..0515778 100644
--- a/radio/1.0/vts/functional/vts_test_util.cpp
+++ b/radio/1.0/vts/functional/vts_test_util.cpp
@@ -138,3 +138,7 @@
     count_--;
     return status;
 }
+
+bool isLteConnected(){
+    return testing::checkSubstringInCommandOutput("getprop gsm.network.type", "LTE");
+}
diff --git a/radio/1.0/vts/functional/vts_test_util.h b/radio/1.0/vts/functional/vts_test_util.h
index fa338a3..39c7545 100644
--- a/radio/1.0/vts/functional/vts_test_util.h
+++ b/radio/1.0/vts/functional/vts_test_util.h
@@ -104,6 +104,11 @@
  */
 bool isVoiceInService(RegState state);
 
+/*
+ * Check if device is in Lte Connected status.
+ */
+bool isLteConnected();
+
 /**
  * Used when waiting for an asynchronous response from the HAL.
  */
diff --git a/radio/1.5/vts/functional/radio_hidl_hal_api.cpp b/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
index fd44e93..3d3abe4 100644
--- a/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
+++ b/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
@@ -597,7 +597,7 @@
     } else if (cardStatus.base.base.base.cardState == CardState::PRESENT) {
         // Modems support 3GPP RAT family need to
         // support scanning requests combined with some parameters.
-        if (deviceSupportsFeature(FEATURE_TELEPHONY_GSM)) {
+        if (deviceSupportsFeature(FEATURE_TELEPHONY_GSM) && isLteConnected()) {
             ASSERT_TRUE(CheckAnyOfErrors(radioRsp_v1_5->rspInfo.error,
                                          {RadioError::NONE, RadioError::OPERATION_NOT_ALLOWED}));
         } else {
diff --git a/radio/aidl/vts/radio_aidl_hal_utils.cpp b/radio/aidl/vts/radio_aidl_hal_utils.cpp
index 64969de..1515201 100644
--- a/radio/aidl/vts/radio_aidl_hal_utils.cpp
+++ b/radio/aidl/vts/radio_aidl_hal_utils.cpp
@@ -240,3 +240,7 @@
         slotStatus = radioConfigRsp->simSlotStatus[physicalSlotId];
     }
 }
+
+bool isLteConnected(){
+    return testing::checkSubstringInCommandOutput("getprop gsm.network.type", "LTE");
+}
diff --git a/radio/aidl/vts/radio_aidl_hal_utils.h b/radio/aidl/vts/radio_aidl_hal_utils.h
index 09c4f14..d8aa024 100644
--- a/radio/aidl/vts/radio_aidl_hal_utils.h
+++ b/radio/aidl/vts/radio_aidl_hal_utils.h
@@ -129,6 +129,11 @@
  */
 bool isServiceValidForDeviceConfiguration(std::string& serviceName);
 
+/*
+ * Check if device is in Lte Connected status.
+ */
+bool isLteConnected();
+
 /**
  * RadioServiceTest base class
  */
diff --git a/radio/aidl/vts/radio_network_test.cpp b/radio/aidl/vts/radio_network_test.cpp
index e5da050..2beb249 100644
--- a/radio/aidl/vts/radio_network_test.cpp
+++ b/radio/aidl/vts/radio_network_test.cpp
@@ -886,7 +886,7 @@
     if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
         ASSERT_TRUE(CheckAnyOfErrors(radioRsp_network->rspInfo.error, {RadioError::SIM_ABSENT}));
     } else if (cardStatus.cardState == CardStatus::STATE_PRESENT) {
-        if (deviceSupportsFeature(FEATURE_TELEPHONY_GSM)) {
+        if (deviceSupportsFeature(FEATURE_TELEPHONY_GSM) && isLteConnected()) {
             // Modems support 3GPP RAT family need to
             // support scanning requests combined with some parameters.
             ASSERT_TRUE(CheckAnyOfErrors(radioRsp_network->rspInfo.error,
diff --git a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
index a868c96..6d289ec 100644
--- a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
+++ b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
@@ -961,10 +961,7 @@
         vector<Certificate> attested_key_cert_chain;
         auto result = GenerateKey(builder, attest_key, &attested_key_blob,
                                   &attested_key_characteristics, &attested_key_cert_chain);
-
-        ASSERT_TRUE(result == ErrorCode::CANNOT_ATTEST_IDS || result == ErrorCode::INVALID_TAG)
-                << "result = " << result;
-        device_id_attestation_vsr_check(result);
+        device_id_attestation_check_acceptable_error(invalid_tag.tag, result);
     }
     CheckedDeleteKey(&attest_key.keyBlob);
 }
@@ -1026,8 +1023,6 @@
 
     ASSERT_EQ(result, ErrorCode::OK);
 
-    device_id_attestation_vsr_check(result);
-
     CheckedDeleteKey(&attested_key_blob);
 
     AuthorizationSet hw_enforced = HwEnforcedAuthorizations(attested_key_characteristics);
@@ -1107,8 +1102,6 @@
 
     ASSERT_EQ(result, ErrorCode::OK);
 
-    device_id_attestation_vsr_check(result);
-
     CheckedDeleteKey(&attested_key_blob);
 
     AuthorizationSet hw_enforced = HwEnforcedAuthorizations(attested_key_characteristics);
diff --git a/security/keymint/aidl/vts/functional/DeviceUniqueAttestationTest.cpp b/security/keymint/aidl/vts/functional/DeviceUniqueAttestationTest.cpp
index 55bb5b4..8e9aded 100644
--- a/security/keymint/aidl/vts/functional/DeviceUniqueAttestationTest.cpp
+++ b/security/keymint/aidl/vts/functional/DeviceUniqueAttestationTest.cpp
@@ -374,8 +374,8 @@
         // Add the tag that doesn't match the local device's real ID.
         builder.push_back(invalid_tag);
         auto result = GenerateKey(builder, &key_blob, &key_characteristics);
-        ASSERT_TRUE(result == ErrorCode::CANNOT_ATTEST_IDS || result == ErrorCode::INVALID_TAG);
-        device_id_attestation_vsr_check(result);
+
+        device_id_attestation_check_acceptable_error(invalid_tag.tag, result);
     }
 }
 
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
index a8ea407..284af94 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
@@ -2153,13 +2153,27 @@
     *signingKey = std::move(pubKey);
 }
 
-void device_id_attestation_vsr_check(const ErrorCode& result) {
-    if (get_vsr_api_level() > __ANDROID_API_T__) {
-        ASSERT_FALSE(result == ErrorCode::INVALID_TAG)
+// Check the error code from an attempt to perform device ID attestation with an invalid value.
+void device_id_attestation_check_acceptable_error(Tag tag, const ErrorCode& result) {
+    if (result == ErrorCode::CANNOT_ATTEST_IDS) {
+        // Standard/default error code for ID mismatch.
+    } else if (result == ErrorCode::INVALID_TAG) {
+        // Depending on the situation, other error codes may be acceptable.  First, allow older
+        // implementations to use INVALID_TAG.
+        ASSERT_FALSE(get_vsr_api_level() > __ANDROID_API_T__)
                 << "It is a specification violation for INVALID_TAG to be returned due to ID "
                 << "mismatch in a Device ID Attestation call. INVALID_TAG is only intended to "
                 << "be used for a case where updateAad() is called after update(). As of "
                 << "VSR-14, this is now enforced as an error.";
+    } else if (result == ErrorCode::ATTESTATION_IDS_NOT_PROVISIONED) {
+        // If the device is not a phone, it will not have IMEI/MEID values available.  Allow
+        // ATTESTATION_IDS_NOT_PROVISIONED in this case.
+        ASSERT_TRUE((tag == TAG_ATTESTATION_ID_IMEI || tag == TAG_ATTESTATION_ID_MEID ||
+                     tag == TAG_ATTESTATION_ID_SECOND_IMEI))
+                << "incorrect error code on attestation ID mismatch";
+    } else {
+        ADD_FAILURE() << "Error code " << result
+                      << " returned on attestation ID mismatch, should be CANNOT_ATTEST_IDS";
     }
 }
 
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
index 30ac452..6318514 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
@@ -421,7 +421,7 @@
 void check_maced_pubkey(const MacedPublicKey& macedPubKey, bool testMode,
                         vector<uint8_t>* payload_value);
 void p256_pub_key(const vector<uint8_t>& coseKeyData, EVP_PKEY_Ptr* signingKey);
-void device_id_attestation_vsr_check(const ErrorCode& result);
+void device_id_attestation_check_acceptable_error(Tag tag, const ErrorCode& result);
 bool check_feature(const std::string& name);
 
 AuthorizationSet HwEnforcedAuthorizations(const vector<KeyCharacteristics>& key_characteristics);
diff --git a/wifi/aidl/vts/functional/wifi_nan_iface_aidl_test.cpp b/wifi/aidl/vts/functional/wifi_nan_iface_aidl_test.cpp
index bebad7c..95bcec7 100644
--- a/wifi/aidl/vts/functional/wifi_nan_iface_aidl_test.cpp
+++ b/wifi/aidl/vts/functional/wifi_nan_iface_aidl_test.cpp
@@ -76,18 +76,10 @@
 
     void TearDown() override { stopWifiService(getInstanceName()); }
 
-    // Used as a mechanism to inform the test about data/event callbacks.
-    inline void notify() {
-        std::unique_lock<std::mutex> lock(mtx_);
-        count_++;
-        cv_.notify_one();
-    }
-
     enum CallbackType {
-        INVALID = -2,
-        ANY_CALLBACK = -1,
+        INVALID = 0,
 
-        NOTIFY_CAPABILITIES_RESPONSE = 0,
+        NOTIFY_CAPABILITIES_RESPONSE = 1,
         NOTIFY_ENABLE_RESPONSE,
         NOTIFY_CONFIG_RESPONSE,
         NOTIFY_DISABLE_RESPONSE,
@@ -128,310 +120,278 @@
         EVENT_SUSPENSION_MODE_CHANGE,
     };
 
+    // Used as a mechanism to inform the test about data/event callbacks.
+    inline void notify(CallbackType callbackType) {
+        std::unique_lock<std::mutex> lock(mtx_);
+        callback_event_bitmap_ |= (0x1 << callbackType);
+        cv_.notify_one();
+    }
+
     // Test code calls this function to wait for data/event callback.
-    // Must set callbackType = INVALID before calling this function.
+    // Must set callback_event_bitmap_ to 0 before calling this function.
     inline std::cv_status wait(CallbackType waitForCallbackType) {
         std::unique_lock<std::mutex> lock(mtx_);
         EXPECT_NE(INVALID, waitForCallbackType);
 
         std::cv_status status = std::cv_status::no_timeout;
         auto now = std::chrono::system_clock::now();
-        while (count_ == 0) {
+        while (!(receivedCallback(waitForCallbackType))) {
             status = cv_.wait_until(lock, now + std::chrono::seconds(TIMEOUT_PERIOD));
             if (status == std::cv_status::timeout) return status;
-            if (waitForCallbackType != ANY_CALLBACK && callback_type_ != INVALID &&
-                callback_type_ != waitForCallbackType) {
-                count_--;
-            }
         }
-        count_--;
         return status;
     }
 
+    inline bool receivedCallback(CallbackType waitForCallbackType) {
+        return callback_event_bitmap_ & (0x1 << waitForCallbackType);
+    }
+
     class WifiNanIfaceEventCallback : public BnWifiNanIfaceEventCallback {
       public:
         WifiNanIfaceEventCallback(WifiNanIfaceAidlTest& parent) : parent_(parent){};
 
         ::ndk::ScopedAStatus eventClusterEvent(const NanClusterEventInd& event) override {
-            parent_.callback_type_ = EVENT_CLUSTER_EVENT;
             parent_.nan_cluster_event_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_CLUSTER_EVENT);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventDataPathConfirm(const NanDataPathConfirmInd& event) override {
-            parent_.callback_type_ = EVENT_DATA_PATH_CONFIRM;
             parent_.nan_data_path_confirm_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_DATA_PATH_CONFIRM);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventDataPathRequest(const NanDataPathRequestInd& event) override {
-            parent_.callback_type_ = EVENT_DATA_PATH_REQUEST;
             parent_.nan_data_path_request_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_DATA_PATH_REQUEST);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventDataPathScheduleUpdate(
                 const NanDataPathScheduleUpdateInd& event) override {
-            parent_.callback_type_ = EVENT_DATA_PATH_SCHEDULE_UPDATE;
             parent_.nan_data_path_schedule_update_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_DATA_PATH_SCHEDULE_UPDATE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventDataPathTerminated(int32_t ndpInstanceId) override {
-            parent_.callback_type_ = EVENT_DATA_PATH_TERMINATED;
             parent_.ndp_instance_id_ = ndpInstanceId;
-            parent_.notify();
+            parent_.notify(EVENT_DATA_PATH_TERMINATED);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventDisabled(const NanStatus& status) override {
-            parent_.callback_type_ = EVENT_DISABLED;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(EVENT_DISABLED);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventFollowupReceived(const NanFollowupReceivedInd& event) override {
-            parent_.callback_type_ = EVENT_FOLLOWUP_RECEIVED;
             parent_.nan_followup_received_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_FOLLOWUP_RECEIVED);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventMatch(const NanMatchInd& event) override {
-            parent_.callback_type_ = EVENT_MATCH;
             parent_.nan_match_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_MATCH);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventMatchExpired(int8_t discoverySessionId, int32_t peerId) override {
-            parent_.callback_type_ = EVENT_MATCH_EXPIRED;
             parent_.session_id_ = discoverySessionId;
             parent_.peer_id_ = peerId;
-            parent_.notify();
+            parent_.notify(EVENT_MATCH_EXPIRED);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventPublishTerminated(int8_t sessionId,
                                                     const NanStatus& status) override {
-            parent_.callback_type_ = EVENT_PUBLISH_TERMINATED;
             parent_.session_id_ = sessionId;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(EVENT_PUBLISH_TERMINATED);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventSubscribeTerminated(int8_t sessionId,
                                                       const NanStatus& status) override {
-            parent_.callback_type_ = EVENT_SUBSCRIBE_TERMINATED;
             parent_.session_id_ = sessionId;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(EVENT_SUBSCRIBE_TERMINATED);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventTransmitFollowup(char16_t id, const NanStatus& status) override {
-            parent_.callback_type_ = EVENT_TRANSMIT_FOLLOWUP;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(EVENT_TRANSMIT_FOLLOWUP);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventPairingConfirm(const NanPairingConfirmInd& event) override {
-            parent_.callback_type_ = EVENT_PAIRING_CONFIRM;
             parent_.nan_pairing_confirm_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_PAIRING_CONFIRM);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventPairingRequest(const NanPairingRequestInd& event) override {
-            parent_.callback_type_ = EVENT_PAIRING_REQUEST;
             parent_.nan_pairing_request_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_PAIRING_REQUEST);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventBootstrappingConfirm(
                 const NanBootstrappingConfirmInd& event) override {
-            parent_.callback_type_ = EVENT_BOOTSTRAPPING_CONFIRM;
             parent_.nan_bootstrapping_confirm_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_BOOTSTRAPPING_CONFIRM);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventBootstrappingRequest(
                 const NanBootstrappingRequestInd& event) override {
-            parent_.callback_type_ = EVENT_BOOTSTRAPPING_REQUEST;
             parent_.nan_bootstrapping_request_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_BOOTSTRAPPING_REQUEST);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus eventSuspensionModeChanged(
                 const NanSuspensionModeChangeInd& event) override {
-            parent_.callback_type_ = EVENT_SUSPENSION_MODE_CHANGE;
             parent_.nan_suspension_mode_change_ind_ = event;
-            parent_.notify();
+            parent_.notify(EVENT_SUSPENSION_MODE_CHANGE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyCapabilitiesResponse(
                 char16_t id, const NanStatus& status,
                 const NanCapabilities& capabilities) override {
-            parent_.callback_type_ = NOTIFY_CAPABILITIES_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
             parent_.capabilities_ = capabilities;
-            parent_.notify();
+            parent_.notify(NOTIFY_CAPABILITIES_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyConfigResponse(char16_t id, const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_CONFIG_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_CONFIG_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyCreateDataInterfaceResponse(char16_t id,
                                                                const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_CREATE_DATA_INTERFACE_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_CREATE_DATA_INTERFACE_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyDeleteDataInterfaceResponse(char16_t id,
                                                                const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_DELETE_DATA_INTERFACE_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_DELETE_DATA_INTERFACE_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyDisableResponse(char16_t id, const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_DISABLE_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_DISABLE_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyEnableResponse(char16_t id, const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_ENABLE_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_ENABLE_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyInitiateDataPathResponse(char16_t id, const NanStatus& status,
                                                             int32_t ndpInstanceId) override {
-            parent_.callback_type_ = NOTIFY_INITIATE_DATA_PATH_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
             parent_.ndp_instance_id_ = ndpInstanceId;
-            parent_.notify();
+            parent_.notify(NOTIFY_INITIATE_DATA_PATH_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyRespondToDataPathIndicationResponse(
                 char16_t id, const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_RESPOND_TO_DATA_PATH_INDICATION_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_RESPOND_TO_DATA_PATH_INDICATION_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyStartPublishResponse(char16_t id, const NanStatus& status,
                                                         int8_t sessionId) override {
-            parent_.callback_type_ = NOTIFY_START_PUBLISH_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
             parent_.session_id_ = sessionId;
-            parent_.notify();
+            parent_.notify(NOTIFY_START_PUBLISH_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyStartSubscribeResponse(char16_t id, const NanStatus& status,
                                                           int8_t sessionId) override {
-            parent_.callback_type_ = NOTIFY_START_SUBSCRIBE_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
             parent_.session_id_ = sessionId;
-            parent_.notify();
+            parent_.notify(NOTIFY_START_SUBSCRIBE_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyStopPublishResponse(char16_t id,
                                                        const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_STOP_PUBLISH_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_STOP_PUBLISH_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyStopSubscribeResponse(char16_t id,
                                                          const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_STOP_SUBSCRIBE_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_STOP_SUBSCRIBE_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyTerminateDataPathResponse(char16_t id,
                                                              const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_TERMINATE_DATA_PATH_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_TERMINATE_DATA_PATH_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifySuspendResponse(char16_t id, const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_SUSPEND_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_SUSPEND_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyResumeResponse(char16_t id, const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_RESUME_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_RESUME_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyTransmitFollowupResponse(char16_t id,
                                                             const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_TRANSMIT_FOLLOWUP_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_TRANSMIT_FOLLOWUP_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyInitiatePairingResponse(char16_t id, const NanStatus& status,
                                                            int32_t pairingInstanceId) override {
-            parent_.callback_type_ = NOTIFY_INITIATE_PAIRING_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
             parent_.pairing_instance_id_ = pairingInstanceId;
-            parent_.notify();
+            parent_.notify(NOTIFY_INITIATE_PAIRING_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyRespondToPairingIndicationResponse(
                 char16_t id, const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_RESPOND_TO_PAIRING_INDICATION_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_RESPOND_TO_PAIRING_INDICATION_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyInitiateBootstrappingResponse(
                 char16_t id, const NanStatus& status, int32_t bootstrapppingInstanceId) override {
-            parent_.callback_type_ = NOTIFY_INITIATE_BOOTSTRAPPING_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
             parent_.bootstrappping_instance_id_ = bootstrapppingInstanceId;
-            parent_.notify();
+            parent_.notify(NOTIFY_INITIATE_BOOTSTRAPPING_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyRespondToBootstrappingIndicationResponse(
                 char16_t id, const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_RESPOND_TO_BOOTSTRAPPING_INDICATION_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_RESPOND_TO_BOOTSTRAPPING_INDICATION_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
         ::ndk::ScopedAStatus notifyTerminatePairingResponse(char16_t id,
                                                             const NanStatus& status) override {
-            parent_.callback_type_ = NOTIFY_TERMINATE_PAIRING_RESPONSE;
             parent_.id_ = id;
             parent_.status_ = status;
-            parent_.notify();
+            parent_.notify(NOTIFY_TERMINATE_PAIRING_RESPONSE);
             return ndk::ScopedAStatus::ok();
         }
 
@@ -441,7 +401,7 @@
 
   protected:
     std::shared_ptr<IWifiNanIface> wifi_nan_iface_;
-    CallbackType callback_type_;
+    uint64_t callback_event_bitmap_;
     uint16_t id_;
     uint8_t session_id_;
     uint32_t ndp_instance_id_;
@@ -468,7 +428,6 @@
     // synchronization objects
     std::mutex mtx_;
     std::condition_variable cv_;
-    int count_ = 0;
 };
 
 /*
@@ -488,7 +447,7 @@
  */
 TEST_P(WifiNanIfaceAidlTest, EnableRequest_InvalidArgs) {
     uint16_t inputCmdId = 10;
-    callback_type_ = INVALID;
+    callback_event_bitmap_ = 0;
     NanEnableRequest nanEnableRequest = {};
     NanConfigRequestSupplemental nanConfigRequestSupp = {};
     auto status =
@@ -498,7 +457,7 @@
 
         // Wait for a callback.
         ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_ENABLE_RESPONSE));
-        ASSERT_EQ(NOTIFY_ENABLE_RESPONSE, callback_type_);
+        ASSERT_TRUE(receivedCallback(NOTIFY_ENABLE_RESPONSE));
         ASSERT_EQ(id_, inputCmdId);
         ASSERT_EQ(status_.status, NanStatusCode::INVALID_ARGS);
     }
@@ -509,7 +468,7 @@
  */
 TEST_P(WifiNanIfaceAidlTest, ConfigRequest_InvalidArgs) {
     uint16_t inputCmdId = 10;
-    callback_type_ = INVALID;
+    callback_event_bitmap_ = 0;
     NanConfigRequest nanConfigRequest = {};
     NanConfigRequestSupplemental nanConfigRequestSupp = {};
     auto status =
@@ -520,7 +479,7 @@
 
         // Wait for a callback.
         ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_CONFIG_RESPONSE));
-        ASSERT_EQ(NOTIFY_CONFIG_RESPONSE, callback_type_);
+        ASSERT_TRUE(receivedCallback(NOTIFY_CONFIG_RESPONSE));
         ASSERT_EQ(id_, inputCmdId);
         ASSERT_EQ(status_.status, NanStatusCode::INVALID_ARGS);
     }
@@ -561,12 +520,12 @@
  */
 TEST_P(WifiNanIfaceAidlTest, NotifyCapabilitiesResponse) {
     uint16_t inputCmdId = 10;
-    callback_type_ = INVALID;
+    callback_event_bitmap_ = 0;
     EXPECT_TRUE(wifi_nan_iface_->getCapabilitiesRequest(inputCmdId).isOk());
 
     // Wait for a callback.
     ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_CAPABILITIES_RESPONSE));
-    ASSERT_EQ(NOTIFY_CAPABILITIES_RESPONSE, callback_type_);
+    ASSERT_TRUE(receivedCallback(NOTIFY_CAPABILITIES_RESPONSE));
     ASSERT_EQ(id_, inputCmdId);
     ASSERT_EQ(status_.status, NanStatusCode::SUCCESS);
 
@@ -654,14 +613,14 @@
     nanConfigRequestSupp.numberOfSpatialStreamsInDiscovery = 0;
     nanConfigRequestSupp.enableDiscoveryWindowEarlyTermination = false;
 
-    callback_type_ = INVALID;
+    callback_event_bitmap_ = 0;
     auto status = wifi_nan_iface_->enableRequest(inputCmdId, req, nanConfigRequestSupp);
     if (!checkStatusCode(&status, WifiStatusCode::ERROR_NOT_SUPPORTED)) {
         ASSERT_TRUE(status.isOk());
 
         // Wait for a callback.
         ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_ENABLE_RESPONSE));
-        ASSERT_EQ(NOTIFY_ENABLE_RESPONSE, callback_type_);
+        ASSERT_TRUE(receivedCallback(NOTIFY_ENABLE_RESPONSE));
         ASSERT_EQ(id_, inputCmdId);
         ASSERT_EQ(status_.status, NanStatusCode::SUCCESS);
     }
@@ -688,7 +647,7 @@
 
         // Wait for a callback.
         ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_START_PUBLISH_RESPONSE));
-        ASSERT_EQ(NOTIFY_START_PUBLISH_RESPONSE, callback_type_);
+        ASSERT_TRUE(receivedCallback(NOTIFY_START_PUBLISH_RESPONSE));
         ASSERT_EQ(id_, inputCmdId + 1);
         ASSERT_EQ(status_.status, NanStatusCode::SUCCESS);
     }
@@ -699,7 +658,7 @@
  */
 TEST_P(WifiNanIfaceAidlTest, RespondToDataPathIndicationRequest_InvalidArgs) {
     uint16_t inputCmdId = 10;
-    callback_type_ = INVALID;
+    callback_event_bitmap_ = 0;
     NanRespondToDataPathIndicationRequest nanRespondToDataPathIndicationRequest = {};
     nanRespondToDataPathIndicationRequest.ifaceName = "AwareInterfaceNameTooLong";
     auto status = wifi_nan_iface_->respondToDataPathIndicationRequest(
@@ -716,7 +675,7 @@
  */
 TEST_P(WifiNanIfaceAidlTest, InitiateDataPathRequest_InvalidArgs) {
     uint16_t inputCmdId = 10;
-    callback_type_ = INVALID;
+    callback_event_bitmap_ = 0;
     NanInitiateDataPathRequest nanInitiateDataPathRequest = {};
     nanInitiateDataPathRequest.ifaceName = "AwareInterfaceNameTooLong";
     auto status = wifi_nan_iface_->initiateDataPathRequest(inputCmdId, nanInitiateDataPathRequest);