diff --git a/radio/1.5/IRadio.hal b/radio/1.5/IRadio.hal
index ee4438d..bea0454 100644
--- a/radio/1.5/IRadio.hal
+++ b/radio/1.5/IRadio.hal
@@ -16,9 +16,10 @@
 
 package android.hardware.radio@1.5;
 
+import @1.0::CdmaSmsMessage;
 import @1.2::DataRequestReason;
-import @1.4::IRadio;
 import @1.4::DataProfileInfo;
+import @1.4::IRadio;
 import @1.5::AccessNetwork;
 import @1.5::BarringInfo;
 import @1.5::DataProfileInfo;
@@ -282,4 +283,15 @@
      */
     oneway setNetworkSelectionModeManual_1_5(int32_t serial, string operatorNumeric,
             RadioAccessNetworks ran);
+
+    /**
+     * Send an SMS message. Identical to sendCdmaSms,
+     * except that more messages are expected to be sent soon.
+     *
+     * @param serial Serial number of request.
+     * @param sms Cdma Sms to be sent described by CdmaSmsMessage in types.hal
+     *
+     * Response callback is IRadioResponse.sendCdmaSMSExpectMoreResponse()
+     */
+    oneway sendCdmaSmsExpectMore(int32_t serial, CdmaSmsMessage sms);
 };
diff --git a/radio/1.5/IRadioResponse.hal b/radio/1.5/IRadioResponse.hal
index e66e00b..9fa521e 100644
--- a/radio/1.5/IRadioResponse.hal
+++ b/radio/1.5/IRadioResponse.hal
@@ -17,11 +17,12 @@
 package android.hardware.radio@1.5;
 
 import @1.0::RadioResponseInfo;
+import @1.0::SendSmsResult;
 import @1.4::IRadioResponse;
 import @1.5::BarringInfo;
 import @1.5::CellInfo;
-import @1.5::SetupDataCallResult;
 import @1.5::RegStateResult;
+import @1.5::SetupDataCallResult;
 
 /**
  * Interface declaring response functions to solicited radio requests.
@@ -236,4 +237,35 @@
      * no retries needed, such as illegal SIM or ME.
      */
     oneway setNetworkSelectionModeManualResponse_1_5(RadioResponseInfo info);
+
+    /**
+     * @param info Response info struct containing response type, serial no. and error
+     * @param sms Response to sms sent as defined by SendSmsResult in types.hal
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:SMS_SEND_FAIL_RETRY
+     *   RadioError:NETWORK_REJECT
+     *   RadioError:INVALID_STATE
+     *   RadioError:INVALID_ARGUMENTS
+     *   RadioError:NO_MEMORY
+     *   RadioError:REQUEST_RATE_LIMITED
+     *   RadioError:INVALID_SMS_FORMAT
+     *   RadioError:SYSTEM_ERR
+     *   RadioError:FDN_CHECK_FAILURE
+     *   RadioError:ENCODING_ERR
+     *   RadioError:INVALID_SMSC_ADDRESS
+     *   RadioError:MODEM_ERR
+     *   RadioError:NETWORK_ERR
+     *   RadioError:INTERNAL_ERR
+     *   RadioError:REQUEST_NOT_SUPPORTED
+     *   RadioError:INVALID_MODEM_STATE
+     *   RadioError:NETWORK_NOT_READY
+     *   RadioError:OPERATION_NOT_ALLOWED
+     *   RadioError:NO_RESOURCES
+     *   RadioError:CANCELLED
+     *   RadioError:SIM_ABSENT
+     */
+    oneway sendCdmaSmsExpectMoreResponse(RadioResponseInfo info, SendSmsResult sms);
 };
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 a4095b7..09305de 100644
--- a/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
+++ b/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
@@ -1022,3 +1022,47 @@
                                      CHECK_GENERAL_ERROR));
     }
 }
+
+/*
+ * Test IRadio.sendCdmaSmsExpectMore() for the response returned.
+ */
+TEST_F(RadioHidlTest_v1_5, sendCdmaSmsExpectMore) {
+    serial = GetRandomSerialNumber();
+
+    // Create a CdmaSmsAddress
+    CdmaSmsAddress cdmaSmsAddress;
+    cdmaSmsAddress.digitMode = CdmaSmsDigitMode::FOUR_BIT;
+    cdmaSmsAddress.numberMode = CdmaSmsNumberMode::NOT_DATA_NETWORK;
+    cdmaSmsAddress.numberType = CdmaSmsNumberType::UNKNOWN;
+    cdmaSmsAddress.numberPlan = CdmaSmsNumberPlan::UNKNOWN;
+    cdmaSmsAddress.digits = (std::vector<uint8_t>){11, 1, 6, 5, 10, 7, 7, 2, 10, 3, 10, 3};
+
+    // Create a CdmaSmsSubAddress
+    CdmaSmsSubaddress cdmaSmsSubaddress;
+    cdmaSmsSubaddress.subaddressType = CdmaSmsSubaddressType::NSAP;
+    cdmaSmsSubaddress.odd = false;
+    cdmaSmsSubaddress.digits = (std::vector<uint8_t>){};
+
+    // Create a CdmaSmsMessage
+    android::hardware::radio::V1_0::CdmaSmsMessage cdmaSmsMessage;
+    cdmaSmsMessage.teleserviceId = 4098;
+    cdmaSmsMessage.isServicePresent = false;
+    cdmaSmsMessage.serviceCategory = 0;
+    cdmaSmsMessage.address = cdmaSmsAddress;
+    cdmaSmsMessage.subAddress = cdmaSmsSubaddress;
+    cdmaSmsMessage.bearerData =
+            (std::vector<uint8_t>){15, 0, 3, 32, 3, 16, 1, 8, 16, 53, 76, 68, 6, 51, 106, 0};
+
+    radio_v1_5->sendCdmaSmsExpectMore(serial, cdmaSmsMessage);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_v1_5->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_v1_5->rspInfo.serial);
+
+    if (cardStatus.base.base.cardState == CardState::ABSENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_v1_5->rspInfo.error,
+                {RadioError::INVALID_ARGUMENTS, RadioError::INVALID_STATE, RadioError::SIM_ABSENT},
+                CHECK_GENERAL_ERROR));
+    }
+}
diff --git a/radio/1.5/vts/functional/radio_hidl_hal_utils_v1_5.h b/radio/1.5/vts/functional/radio_hidl_hal_utils_v1_5.h
index abab452..6e6576e 100644
--- a/radio/1.5/vts/functional/radio_hidl_hal_utils_v1_5.h
+++ b/radio/1.5/vts/functional/radio_hidl_hal_utils_v1_5.h
@@ -573,6 +573,9 @@
                     cellInfo);
 
     Return<void> setNetworkSelectionModeManualResponse_1_5(const RadioResponseInfo& info);
+
+    Return<void> sendCdmaSmsExpectMoreResponse(const RadioResponseInfo& info,
+                                               const SendSmsResult& sms);
 };
 
 /* Callback class for radio indication */
diff --git a/radio/1.5/vts/functional/radio_response.cpp b/radio/1.5/vts/functional/radio_response.cpp
index d7197d5..223acd0 100644
--- a/radio/1.5/vts/functional/radio_response.cpp
+++ b/radio/1.5/vts/functional/radio_response.cpp
@@ -999,3 +999,8 @@
     parent_v1_5.notify(info.serial);
     return Void();
 }
+
+Return<void> RadioResponse_v1_5::sendCdmaSmsExpectMoreResponse(const RadioResponseInfo& /*info*/,
+                                                               const SendSmsResult& /*sms*/) {
+    return Void();
+}