diff --git a/radio/1.4/Android.bp b/radio/1.4/Android.bp
index 32f9712..9fd0374 100644
--- a/radio/1.4/Android.bp
+++ b/radio/1.4/Android.bp
@@ -23,6 +23,7 @@
     types: [
         "AccessNetwork",
         "CardStatus",
+        "CarrierRestrictionsWithPriority",
         "CellConfigLte",
         "CellInfo",
         "CellInfoLte",
@@ -37,14 +38,15 @@
         "FrequencyRange",
         "LteVopsInfo",
         "NetworkScanResult",
+        "NrIndicators",
         "PdpProtocolType",
         "PhysicalChannelConfig",
         "RadioAccessFamily",
         "RadioCapability",
         "RadioFrequencyInfo",
         "RadioTechnology",
-        "NrIndicators",
         "SetupDataCallResult",
+        "SimLockMultiSimPolicy",
     ],
     gen_java: true,
 }
diff --git a/radio/1.4/IRadio.hal b/radio/1.4/IRadio.hal
index b0810a4..3fe608f 100644
--- a/radio/1.4/IRadio.hal
+++ b/radio/1.4/IRadio.hal
@@ -21,10 +21,12 @@
 import @1.2::NetworkScanRequest;
 import @1.3::IRadio;
 import @1.4::AccessNetwork;
+import @1.4::CarrierRestrictionsWithPriority;
 import @1.4::DataProfileInfo;
 import @1.4::EmergencyCallRouting;
 import @1.4::EmergencyServiceCategory;
 import @1.4::RadioAccessFamily;
+import @1.4::SimLockMultiSimPolicy;
 
 /**
  * This interface is used by telephony and telecom to talk to cellular radio.
@@ -167,4 +169,34 @@
      */
     oneway setPreferredNetworkTypeBitmap(
             int32_t serial, bitfield<RadioAccessFamily> networkTypeBitmap);
+
+    /**
+     * Set carrier restrictions. Expected modem behavior:
+     *  If never receives this command:
+     *  - Must allow all carriers
+     *  Receives this command:
+     *  - Only allow carriers specified in carriers. The restriction persists across power cycles
+     *    and FDR. If a present SIM is allowed, modem must not reload the SIM. If a present SIM is
+     *    *not* allowed, modem must detach from the registered network and only keep emergency
+     *    service, and notify Android SIM refresh reset with new SIM state being
+     *    CardState:RESTRICTED. Emergency service must be enabled.
+     *
+     * @param serial Serial number of request.
+     * @param carriers CarrierRestrictionsWithPriority consisting allowed and excluded carriers
+     *        as defined in types.hal
+     * @param multiSimPolicy Policy to be used for devices with multiple SIMs.
+     *
+     * Response callback is IRadioResponse.setAllowedCarriersResponse()
+     */
+    oneway setAllowedCarriers_1_4(int32_t serial, CarrierRestrictionsWithPriority carriers,
+            SimLockMultiSimPolicy multiSimPolicy);
+
+    /**
+     * Get carrier restrictions.
+     *
+     * @param serial Serial number of request.
+     *
+     * Response callback is IRadioResponse.getAllowedCarriersResponse_1_3()
+     */
+    oneway getAllowedCarriers_1_4(int32_t serial);
 };
diff --git a/radio/1.4/IRadioResponse.hal b/radio/1.4/IRadioResponse.hal
index a58a5c1..77aad03 100644
--- a/radio/1.4/IRadioResponse.hal
+++ b/radio/1.4/IRadioResponse.hal
@@ -18,6 +18,13 @@
 
 import @1.0::RadioResponseInfo;
 import @1.3::IRadioResponse;
+import @1.4::CardStatus;
+import @1.4::CarrierRestrictionsWithPriority;
+import @1.4::CellInfo;
+import @1.4::DataRegStateResult;
+import @1.4::RadioAccessFamily;
+import @1.4::SetupDataCallResult;
+import @1.4::SimLockMultiSimPolicy;
 
 /**
  * Interface declaring response functions to solicited radio requests.
@@ -181,4 +188,31 @@
      *   RadioError:SIM_ABSENT
      */
     oneway setupDataCallResponse_1_4(RadioResponseInfo info, SetupDataCallResult dcResponse);
+
+    /**
+     * @param info Response info struct containing response type, serial no. and error
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:INVALID_ARGUMENTS
+     *   RadioError:REQUEST_NOT_SUPPORTED
+     */
+    oneway setAllowedCarriersResponse_1_4(RadioResponseInfo info);
+
+    /**
+     * Expected modem behavior:
+     *  Return list of allowed carriers, and if all carriers are allowed.
+     *
+     * @param info Response info struct containing response type, serial no. and error
+     * @param carriers Carrier restriction information.
+     * @param multiSimPolicy Policy used for devices with multiple SIM cards.
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:REQUEST_NOT_SUPPORTED
+     */
+    oneway getAllowedCarriersResponse_1_4(RadioResponseInfo info,
+            CarrierRestrictionsWithPriority carriers, SimLockMultiSimPolicy multiSimPolicy);
 };
diff --git a/radio/1.4/types.hal b/radio/1.4/types.hal
index cdfde9e..cfeaaf6 100644
--- a/radio/1.4/types.hal
+++ b/radio/1.4/types.hal
@@ -18,6 +18,7 @@
 
 import @1.0::ApnAuthType;
 import @1.0::ApnTypes;
+import @1.0::Carrier;
 import @1.0::CellInfoType;
 import @1.0::DataCallFailCause;
 import @1.0::DataProfileId;
@@ -1720,3 +1721,38 @@
      */
     int32_t mtu;
 };
+
+enum SimLockMultiSimPolicy : int32_t {
+    /**
+     * Indicates that configuration applies to each slot independently.
+     */
+    NO_MULTISIM_POLICY = 0,
+    /**
+     * Indicates that any SIM card can be used as far as one valid card is present in the device.
+     * For the modem, a SIM card is valid when its content (i.e. MCC, MNC, GID, SPN) matches the
+     * carrier restriction configuration.
+     */
+    ONE_VALID_SIM_MUST_BE_PRESENT = 1,
+};
+
+struct CarrierRestrictionsWithPriority {
+    /**
+     * List of allowed carriers.
+     * The character '?' is used as wildcard character to match any value.
+     */
+    vec<Carrier> allowedCarriers;
+    /**
+     * List of excluded carriers.
+     * The character '?' is used as wildcard character to match any value.
+     */
+    vec<Carrier> excludedCarriers;
+    /**
+     * True means that only carriers included in the allowed list and not in the excluded list
+     * are permitted. Eg. allowedCarriers match mcc/mnc, excludedCarriers has same mcc/mnc and
+     * gid1 is ABCD. It means except the carrier whose gid1 is ABCD, all carriers with the
+     * same mcc/mnc are allowed.
+     * False means that all carriers are allowed except those included in the excluded list
+     * and not in the allowed list.
+     */
+    bool allowedCarriersPrioritized;
+};