diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/GnssData.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/GnssData.aidl
index 31426f0..54e3b21 100644
--- a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/GnssData.aidl
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/GnssData.aidl
@@ -39,6 +39,7 @@
   android.hardware.gnss.GnssClock clock;
   android.hardware.gnss.ElapsedRealtime elapsedRealtime;
   android.hardware.gnss.GnssData.GnssAgc[] gnssAgcs = {};
+  boolean isFullTracking;
   @VintfStability
   parcelable GnssAgc {
     double agcLevelDb;
diff --git a/gnss/aidl/android/hardware/gnss/GnssData.aidl b/gnss/aidl/android/hardware/gnss/GnssData.aidl
index 075a039..492ba31 100644
--- a/gnss/aidl/android/hardware/gnss/GnssData.aidl
+++ b/gnss/aidl/android/hardware/gnss/GnssData.aidl
@@ -99,4 +99,15 @@
      * weak to be acquired, the AGC value must still be reported.
      */
     GnssAgc[] gnssAgcs = {};
+
+    /**
+     * True indicates that the GNSS chipset switches off duty cycling. In such mode, no clock
+     * discontinuities are expected and, when supported, carrier phase should be continuous in good
+     * signal conditions. All non-blocklisted, healthy constellations, satellites and frequency
+     * bands must be tracked and reported in this mode.
+     *
+     * False indicates that the GNSS chipset optimizes power via duty cycling, constellations and
+     * frequency limits, etc.
+     */
+    boolean isFullTracking;
 }
diff --git a/gnss/aidl/default/Gnss.cpp b/gnss/aidl/default/Gnss.cpp
index 8d3fc39..23d7999 100644
--- a/gnss/aidl/default/Gnss.cpp
+++ b/gnss/aidl/default/Gnss.cpp
@@ -76,12 +76,12 @@
     }
     GnssSignalType signalType1 = {
             .constellation = GnssConstellationType::GPS,
-            .carrierFrequencyHz = 1.59975e+09,
+            .carrierFrequencyHz = 1.57542e+09,
             .codeType = GnssSignalType::CODE_TYPE_C,
     };
     GnssSignalType signalType2 = {
             .constellation = GnssConstellationType::GLONASS,
-            .carrierFrequencyHz = 1.59975e+09,
+            .carrierFrequencyHz = 1.5980625e+09,
             .codeType = GnssSignalType::CODE_TYPE_C,
     };
     status = sGnssCallback->gnssSetSignalTypeCapabilitiesCb(
diff --git a/gnss/aidl/default/GnssMeasurementInterface.cpp b/gnss/aidl/default/GnssMeasurementInterface.cpp
index 606de07..90056ce 100644
--- a/gnss/aidl/default/GnssMeasurementInterface.cpp
+++ b/gnss/aidl/default/GnssMeasurementInterface.cpp
@@ -54,7 +54,7 @@
         ALOGW("GnssMeasurement callback already set. Resetting the callback...");
         stop();
     }
-    start(enableCorrVecOutputs);
+    start(enableCorrVecOutputs, enableFullTracking);
 
     return ndk::ScopedAStatus::ok();
 }
@@ -73,7 +73,7 @@
         stop();
     }
     mIntervalMs = std::max(options.intervalMs, 1000);
-    start(options.enableCorrVecOutputs);
+    start(options.enableCorrVecOutputs, options.enableFullTracking);
 
     return ndk::ScopedAStatus::ok();
 }
@@ -91,7 +91,8 @@
     return ndk::ScopedAStatus::ok();
 }
 
-void GnssMeasurementInterface::start(const bool enableCorrVecOutputs) {
+void GnssMeasurementInterface::start(const bool enableCorrVecOutputs,
+                                     const bool enableFullTracking) {
     ALOGD("start");
 
     if (mIsActive) {
@@ -103,7 +104,7 @@
 
     mIsActive = true;
     mThreadBlocker.reset();
-    mThread = std::thread([this, enableCorrVecOutputs]() {
+    mThread = std::thread([this, enableCorrVecOutputs, enableFullTracking]() {
         int intervalMs;
         do {
             if (!mIsActive) {
@@ -122,7 +123,8 @@
                     this->reportMeasurement(*measurement);
                 }
             } else {
-                auto measurement = Utils::getMockMeasurement(enableCorrVecOutputs);
+                auto measurement =
+                        Utils::getMockMeasurement(enableCorrVecOutputs, enableFullTracking);
                 this->reportMeasurement(measurement);
             }
             intervalMs =
diff --git a/gnss/aidl/default/GnssMeasurementInterface.h b/gnss/aidl/default/GnssMeasurementInterface.h
index bb08027..d2737e5 100644
--- a/gnss/aidl/default/GnssMeasurementInterface.h
+++ b/gnss/aidl/default/GnssMeasurementInterface.h
@@ -41,7 +41,7 @@
     void setLocationEnabled(const bool enabled);
 
   private:
-    void start(const bool enableCorrVecOutputs);
+    void start(const bool enableCorrVecOutputs, const bool enableFullTracking);
     void stop();
     void reportMeasurement(const GnssData&);
     void waitForStoppingThreads();
diff --git a/gnss/aidl/vts/GnssMeasurementCallbackAidl.cpp b/gnss/aidl/vts/GnssMeasurementCallbackAidl.cpp
index a553954..0d15b2a 100644
--- a/gnss/aidl/vts/GnssMeasurementCallbackAidl.cpp
+++ b/gnss/aidl/vts/GnssMeasurementCallbackAidl.cpp
@@ -24,9 +24,11 @@
 
 android::binder::Status GnssMeasurementCallbackAidl::gnssMeasurementCb(const GnssData& gnssData) {
     ALOGI("gnssMeasurementCb");
-    ALOGV("elapsedRealtime: flags = 0x%X, timestampNs: %" PRId64 ", timeUncertaintyNs=%lf",
+    ALOGV("elapsedRealtime: flags = 0x%X, timestampNs: %" PRId64
+          ", timeUncertaintyNs=%lf"
+          " isFullTracking=%s",
           gnssData.elapsedRealtime.flags, gnssData.elapsedRealtime.timestampNs,
-          gnssData.elapsedRealtime.timeUncertaintyNs);
+          gnssData.elapsedRealtime.timeUncertaintyNs, gnssData.isFullTracking ? "true" : "false");
 
     gnss_data_cbq_.store(gnssData);
     return android::binder::Status::ok();
diff --git a/gnss/aidl/vts/gnss_hal_test.cpp b/gnss/aidl/vts/gnss_hal_test.cpp
index 91cd917..b4f2b77 100644
--- a/gnss/aidl/vts/gnss_hal_test.cpp
+++ b/gnss/aidl/vts/gnss_hal_test.cpp
@@ -477,6 +477,26 @@
     }
 }
 
+void GnssHalTest::checkGnssDataFields(const sp<GnssMeasurementCallbackAidl>& callback,
+                                      const int numMeasurementEvents, const int timeoutSeconds,
+                                      const bool isFullTracking) {
+    for (int i = 0; i < numMeasurementEvents; i++) {
+        GnssData lastGnssData;
+        ASSERT_TRUE(callback->gnss_data_cbq_.retrieve(lastGnssData, timeoutSeconds));
+        EXPECT_EQ(callback->gnss_data_cbq_.calledCount(), i + 1);
+        ASSERT_TRUE(lastGnssData.measurements.size() > 0);
+
+        // Validity check GnssData fields
+        checkGnssMeasurementClockFields(lastGnssData);
+        if (aidl_gnss_hal_->getInterfaceVersion() >= 3) {
+            EXPECT_EQ(lastGnssData.isFullTracking, isFullTracking);
+        }
+        for (const auto& measurement : lastGnssData.measurements) {
+            checkGnssMeasurementFields(measurement, lastGnssData);
+        }
+    }
+}
+
 void GnssHalTest::assertMeanAndStdev(int intervalMs, std::vector<int>& deltasMs) {
     double mean = computeMean(deltasMs);
     double stdev = computeStdev(mean, deltasMs);
diff --git a/gnss/aidl/vts/gnss_hal_test.h b/gnss/aidl/vts/gnss_hal_test.h
index c49c1b9..470294c 100644
--- a/gnss/aidl/vts/gnss_hal_test.h
+++ b/gnss/aidl/vts/gnss_hal_test.h
@@ -101,6 +101,9 @@
     void collectMeasurementIntervals(const sp<GnssMeasurementCallbackAidl>& callback,
                                      const int numMeasurementEvents, const int timeoutSeconds,
                                      std::vector<int>& deltaMs);
+    void checkGnssDataFields(const sp<GnssMeasurementCallbackAidl>& callback,
+                             const int numMeasurementEvents, const int timeoutSeconds,
+                             const bool isFullTracking);
     void assertMeanAndStdev(int intervalMillis, std::vector<int>& deltasMillis);
 
     sp<IGnssAidl> aidl_gnss_hal_;
diff --git a/gnss/aidl/vts/gnss_hal_test_cases.cpp b/gnss/aidl/vts/gnss_hal_test_cases.cpp
index 7c0a4df..31cef15 100644
--- a/gnss/aidl/vts/gnss_hal_test_cases.cpp
+++ b/gnss/aidl/vts/gnss_hal_test_cases.cpp
@@ -173,6 +173,7 @@
  * GnssCapabilities:
  * 1. Verifies that GNSS hardware supports measurement capabilities.
  * 2. Verifies that GNSS hardware supports Scheduling capabilities.
+ * 3. Verifies that GNSS hardware supports non-empty signal type capabilities.
  */
 TEST_P(GnssHalTest, GnssCapabilites) {
     if (aidl_gnss_hal_->getInterfaceVersion() <= 1) {
@@ -182,6 +183,10 @@
         EXPECT_TRUE(aidl_gnss_cb_->last_capabilities_ & IGnssCallback::CAPABILITY_MEASUREMENTS);
     }
     EXPECT_TRUE(aidl_gnss_cb_->last_capabilities_ & IGnssCallback::CAPABILITY_SCHEDULING);
+    if (aidl_gnss_hal_->getInterfaceVersion() <= 2) {
+        return;
+    }
+    EXPECT_FALSE(aidl_gnss_cb_->last_signal_type_capabilities.empty());
 }
 
 /*
@@ -1466,7 +1471,7 @@
 /*
  * TestGnssMeasurementIntervals:
  * 1. start measurement with interval
- * 2. verify that the received measurement intervals have expected mean and stdev
+ * 2. verify that the received measurement intervals have expected mean and stddev
  */
 TEST_P(GnssHalTest, TestGnssMeasurementIntervals_LocationOnAfterMeasurement) {
     if (aidl_gnss_hal_->getInterfaceVersion() <= 1) {
@@ -1499,11 +1504,17 @@
     }
 }
 
+/*
+ * TestGnssMeasurementSetCallback
+ * 1. Start measurement with 20s interval. Expect the first measurement received in 10s.
+ * 2. Start measurement with 1s interval and wait for 5 measurements.
+ * 3. Verify the received measurement intervals have expected mean and stddev.
+ */
 TEST_P(GnssHalTest, TestGnssMeasurementSetCallback) {
     if (aidl_gnss_hal_->getInterfaceVersion() <= 2) {
         return;
     }
-
+    const int kFirstGnssMeasurementTimeoutSeconds = 10;
     sp<IGnssMeasurementInterface> iGnssMeasurement;
     auto status = aidl_gnss_hal_->getExtensionGnssMeasurement(&iGnssMeasurement);
     ASSERT_TRUE(status.isOk());
@@ -1515,12 +1526,14 @@
 
     // setCallback at 20s interval and wait for 1 measurement
     startMeasurementWithInterval(20000, iGnssMeasurement, callback);
-    collectMeasurementIntervals(callback, /* numEvents= */ 1, /* timeoutSeconds= */ 10, deltas);
+    collectMeasurementIntervals(callback, /* numEvents= */ 1, kFirstGnssMeasurementTimeoutSeconds,
+                                deltas);
 
     // setCallback at 1s interval and wait for 5 measurements
     callback->gnss_data_cbq_.reset();
     startMeasurementWithInterval(1000, iGnssMeasurement, callback);
-    collectMeasurementIntervals(callback, /* numEvents= */ 5, /* timeoutSeconds= */ 10, deltas);
+    collectMeasurementIntervals(callback, /* numEvents= */ 5, kFirstGnssMeasurementTimeoutSeconds,
+                                deltas);
 
     // verify the measurements were received at 1Hz
     assertMeanAndStdev(1000, deltas);
@@ -1528,3 +1541,43 @@
     status = iGnssMeasurement->close();
     ASSERT_TRUE(status.isOk());
 }
+
+/*
+ * TestGnssMeasurementIsFullTracking
+ * 1. Start measurement with enableFullTracking=true. Verify the received measurements have
+ *    isFullTracking=true.
+ * 2. Start measurement with enableFullTracking = false. Verify the received measurements have
+ *    isFullTracking=false.
+ * 3. Do step 1 again.
+ */
+TEST_P(GnssHalTest, TestGnssMeasurementIsFullTracking) {
+    // GnssData.isFullTracking is added in the interface version 3
+    if (aidl_gnss_hal_->getInterfaceVersion() <= 2) {
+        return;
+    }
+    const int kFirstGnssMeasurementTimeoutSeconds = 10;
+    const int kNumMeasurementEvents = 5;
+    std::vector<bool> isFullTrackingList({true, false, true});
+
+    sp<IGnssMeasurementInterface> iGnssMeasurement;
+    auto status = aidl_gnss_hal_->getExtensionGnssMeasurement(&iGnssMeasurement);
+    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(iGnssMeasurement != nullptr);
+
+    ALOGD("TestGnssMeasurementIsFullTracking");
+    auto callback = sp<GnssMeasurementCallbackAidl>::make();
+    IGnssMeasurementInterface::Options options;
+    options.intervalMs = 1000;
+
+    for (auto isFullTracking : isFullTrackingList) {
+        options.enableFullTracking = isFullTracking;
+
+        callback->gnss_data_cbq_.reset();
+        auto status = iGnssMeasurement->setCallbackWithOptions(callback, options);
+        checkGnssDataFields(callback, kNumMeasurementEvents, kFirstGnssMeasurementTimeoutSeconds,
+                            isFullTracking);
+    }
+
+    status = iGnssMeasurement->close();
+    ASSERT_TRUE(status.isOk());
+}
diff --git a/gnss/common/utils/default/Utils.cpp b/gnss/common/utils/default/Utils.cpp
index 4de49f3..ad351f8 100644
--- a/gnss/common/utils/default/Utils.cpp
+++ b/gnss/common/utils/default/Utils.cpp
@@ -147,7 +147,7 @@
     return gnssData;
 }
 
-GnssData Utils::getMockMeasurement(const bool enableCorrVecOutputs) {
+GnssData Utils::getMockMeasurement(const bool enableCorrVecOutputs, const bool enableFullTracking) {
     aidl::android::hardware::gnss::GnssSignalType signalType = {
             .constellation = GnssConstellationType::GLONASS,
             .carrierFrequencyHz = 1.59975e+09,
@@ -258,7 +258,8 @@
     GnssData gnssData = {.measurements = {measurement},
                          .clock = clock,
                          .elapsedRealtime = timestamp,
-                         .gnssAgcs = std::vector({gnssAgc1, gnssAgc2})};
+                         .gnssAgcs = std::vector({gnssAgc1, gnssAgc2}),
+                         .isFullTracking = enableFullTracking};
     return gnssData;
 }
 
diff --git a/gnss/common/utils/default/include/Utils.h b/gnss/common/utils/default/include/Utils.h
index ad8f539..9be4a19 100644
--- a/gnss/common/utils/default/include/Utils.h
+++ b/gnss/common/utils/default/include/Utils.h
@@ -32,7 +32,7 @@
 
 struct Utils {
     static aidl::android::hardware::gnss::GnssData getMockMeasurement(
-            const bool enableCorrVecOutputs);
+            const bool enableCorrVecOutputs, const bool enableFullTracking);
     static V2_0::IGnssMeasurementCallback::GnssData getMockMeasurementV2_0();
     static V2_1::IGnssMeasurementCallback::GnssData getMockMeasurementV2_1();