diff --git a/health/aidl/Android.bp b/health/aidl/Android.bp
index 97de0e2..d2ad3b1 100644
--- a/health/aidl/Android.bp
+++ b/health/aidl/Android.bp
@@ -50,9 +50,8 @@
             version: "3",
             imports: [],
         },
-
     ],
-    frozen: true,
+    frozen: false,
 
 }
 
@@ -84,7 +83,7 @@
     name: "android.hardware.health-translate-ndk",
     defaults: ["android.hardware.health-translate-ndk_defaults"],
     shared_libs: [
-        "android.hardware.health-V3-ndk",
+        "android.hardware.health-V4-ndk",
     ],
 }
 
@@ -101,7 +100,7 @@
     name: "android.hardware.health-translate-java",
     srcs: ["android/hardware/health/Translate.java"],
     libs: [
-        "android.hardware.health-V3-java",
+        "android.hardware.health-V4-java",
         "android.hardware.health-V2.0-java",
         "android.hardware.health-V2.1-java",
     ],
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryPartStatus.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryPartStatus.aidl
index e013e31..9303767 100644
--- a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryPartStatus.aidl
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryPartStatus.aidl
@@ -34,7 +34,7 @@
 package android.hardware.health;
 @Backing(type="int") @VintfStability
 enum BatteryPartStatus {
-  UNSUPPORTED,
-  ORIGINAL,
-  REPLACED,
+  UNSUPPORTED = 0,
+  ORIGINAL = 1,
+  REPLACED = 2,
 }
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl
index bfa1475..548a793 100644
--- a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl
@@ -60,5 +60,6 @@
   android.hardware.health.BatteryChargingState chargingState;
   android.hardware.health.BatteryChargingPolicy chargingPolicy;
   @nullable android.hardware.health.BatteryHealthData batteryHealthData;
+  @nullable android.hardware.health.HingeInfo[] foldInfos;
   const int BATTERY_CHARGE_TIME_TO_FULL_NOW_SECONDS_UNSUPPORTED = (-1) /* -1 */;
 }
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HingeInfo.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HingeInfo.aidl
new file mode 100644
index 0000000..b3c38ad
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HingeInfo.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+parcelable HingeInfo {
+  int numTimesFolded;
+  int expectedHingeLifespan;
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl
index b49dfff..e919f14 100644
--- a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl
@@ -49,6 +49,7 @@
   void setChargingPolicy(android.hardware.health.BatteryChargingPolicy in_value);
   android.hardware.health.BatteryChargingPolicy getChargingPolicy();
   android.hardware.health.BatteryHealthData getBatteryHealthData();
+  android.hardware.health.HingeInfo[] getHingeInfo();
   const int STATUS_UNKNOWN = 2;
   const int STATUS_CALLBACK_DIED = 4;
 }
diff --git a/health/aidl/android/hardware/health/HealthInfo.aidl b/health/aidl/android/hardware/health/HealthInfo.aidl
index af84089..12a397a 100644
--- a/health/aidl/android/hardware/health/HealthInfo.aidl
+++ b/health/aidl/android/hardware/health/HealthInfo.aidl
@@ -24,6 +24,7 @@
 import android.hardware.health.BatteryStatus;
 import android.hardware.health.DiskStats;
 import android.hardware.health.StorageInfo;
+import android.hardware.health.HingeInfo;
 
 /**
  * Health Information.
@@ -115,7 +116,6 @@
      * Battery capacity level. See {@link BatteryCapacityLevel} for more details.
      */
     BatteryCapacityLevel batteryCapacityLevel;
-
     /**
      * Value of {@link #batteryChargeTimeToFullNowSeconds} if it is not
      * supported.
@@ -148,4 +148,8 @@
      * Battery health data
      */
     @nullable BatteryHealthData batteryHealthData;
+    /**
+     * Information about foldable hinge health. Will be an empty vector if no hinges present
+     */
+    @nullable HingeInfo[] foldInfos;
 }
diff --git a/health/aidl/android/hardware/health/HingeInfo.aidl b/health/aidl/android/hardware/health/HingeInfo.aidl
new file mode 100644
index 0000000..19b46df
--- /dev/null
+++ b/health/aidl/android/hardware/health/HingeInfo.aidl
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/*
+ * Information on foldable hinge health life time estimates, end of life
+ * information and other attributes.
+ *
+ * All integers in this struct must be interpreted as non-negative.
+ */
+@VintfStability
+parcelable HingeInfo {
+    /**
+     * returns count of times a given hinge has been folded.
+     *
+     * opening fully counts as 1 fold and closing fully counts as another
+     */
+    int numTimesFolded;
+    /**
+     * returns the expected lifespan of hinge in units of number of folds
+     */
+    int expectedHingeLifespan;
+}
diff --git a/health/aidl/android/hardware/health/IHealth.aidl b/health/aidl/android/hardware/health/IHealth.aidl
index bdfe07a..c88141c 100644
--- a/health/aidl/android/hardware/health/IHealth.aidl
+++ b/health/aidl/android/hardware/health/IHealth.aidl
@@ -23,6 +23,7 @@
 import android.hardware.health.HealthInfo;
 import android.hardware.health.IHealthInfoCallback;
 import android.hardware.health.StorageInfo;
+import android.hardware.health.HingeInfo;
 
 /**
  * IHealth manages health info and posts events on registered callbacks.
@@ -242,4 +243,17 @@
      *           for other errors.
      */
     BatteryHealthData getBatteryHealthData();
+
+    /**
+     * Get Hinge info.
+     *
+     * @return vector of HingeInfo structs if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for other errors.
+     */
+    HingeInfo[] getHingeInfo();
+
 }
diff --git a/health/aidl/default/Android.bp b/health/aidl/default/Android.bp
index 2071f08..cc5d0a0 100644
--- a/health/aidl/default/Android.bp
+++ b/health/aidl/default/Android.bp
@@ -29,7 +29,7 @@
         "libcutils",
         "liblog",
         "libutils",
-        "android.hardware.health-V3-ndk",
+        "android.hardware.health-V4-ndk",
 
         // TODO(b/177269435): remove when BatteryMonitor works with AIDL HealthInfo.
         "libhidlbase",
@@ -48,7 +48,7 @@
     name: "libhealth_aidl_charger_defaults",
     shared_libs: [
         // common
-        "android.hardware.health-V3-ndk",
+        "android.hardware.health-V4-ndk",
         "libbase",
         "libcutils",
         "liblog",
@@ -195,7 +195,7 @@
         "service_fuzzer_defaults",
     ],
     static_libs: [
-        "android.hardware.health-V3-ndk",
+        "android.hardware.health-V4-ndk",
         "libbase",
         "liblog",
         "fuzz_libhealth_aidl_impl",
diff --git a/health/aidl/default/Health.cpp b/health/aidl/default/Health.cpp
index 37662ea..d0e2dac 100644
--- a/health/aidl/default/Health.cpp
+++ b/health/aidl/default/Health.cpp
@@ -192,6 +192,12 @@
     return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
 }
 
+ndk::ScopedAStatus Health::getHingeInfo(std::vector<HingeInfo>*) {
+    // This implementation does not support HingeInfo. An implementation may extend this
+    // class and override this function to support storage info.
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
 ndk::ScopedAStatus Health::getHealthInfo(HealthInfo* out) {
     battery_monitor_.updateValues();
 
diff --git a/health/aidl/default/android.hardware.health-service.example.xml b/health/aidl/default/android.hardware.health-service.example.xml
index 2acaaba..8ddfbda 100644
--- a/health/aidl/default/android.hardware.health-service.example.xml
+++ b/health/aidl/default/android.hardware.health-service.example.xml
@@ -1,7 +1,7 @@
 <manifest version="1.0" type="device">
     <hal format="aidl">
         <name>android.hardware.health</name>
-        <version>3</version>
+        <version>4</version>
         <fqname>IHealth/default</fqname>
     </hal>
 </manifest>
diff --git a/health/aidl/default/include/health-impl/Health.h b/health/aidl/default/include/health-impl/Health.h
index 429ae2a..96df517 100644
--- a/health/aidl/default/include/health-impl/Health.h
+++ b/health/aidl/default/include/health-impl/Health.h
@@ -72,6 +72,7 @@
     // The default implementations return nothing in |out|.
     ndk::ScopedAStatus getDiskStats(std::vector<DiskStats>* out) override;
     ndk::ScopedAStatus getStorageInfo(std::vector<StorageInfo>* out) override;
+    ndk::ScopedAStatus getHingeInfo(std::vector<HingeInfo>* out) override;
 
     ndk::ScopedAStatus setChargingPolicy(BatteryChargingPolicy in_value) override;
     ndk::ScopedAStatus getChargingPolicy(BatteryChargingPolicy* out) override;
diff --git a/health/aidl/vts/functional/Android.bp b/health/aidl/vts/functional/Android.bp
index 25ba5f8..75bec97 100644
--- a/health/aidl/vts/functional/Android.bp
+++ b/health/aidl/vts/functional/Android.bp
@@ -40,7 +40,7 @@
         "libbinder_ndk",
     ],
     static_libs: [
-        "android.hardware.health-V3-ndk",
+        "android.hardware.health-V4-ndk",
         "libgmock",
     ],
     header_libs: [
diff --git a/health/aidl/vts/functional/VtsHalHealthTargetTest.cpp b/health/aidl/vts/functional/VtsHalHealthTargetTest.cpp
index 45a1e40..c47ddca 100644
--- a/health/aidl/vts/functional/VtsHalHealthTargetTest.cpp
+++ b/health/aidl/vts/functional/VtsHalHealthTargetTest.cpp
@@ -360,6 +360,19 @@
 }
 
 /*
+ * Tests the values returned by getHingeInfo() from interface IHealth.
+ */
+TEST_P(HealthAidl, getHingeInfo) {
+    std::vector<HingeInfo> value;
+    auto status = health->getHingeInfo(&value);
+    ASSERT_THAT(status, AnyOf(IsOk(), ExceptionIs(EX_UNSUPPORTED_OPERATION)));
+    if (!status.isOk()) return;
+    for (auto& hinge : value) {
+        ASSERT_TRUE(hinge.expectedHingeLifespan > 0);
+    }
+}
+
+/*
  * Tests the values returned by getDiskStats() from interface IHealth.
  */
 TEST_P(HealthAidl, getDiskStats) {