diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index 0c4a752..a950c76 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -45,6 +45,7 @@
         "OneShotTimerTest.cpp",
         "LayerHistoryTest.cpp",
         "LayerMetadataTest.cpp",
+        "PhaseOffsetsTest.cpp",
         "SchedulerTest.cpp",
         "SchedulerUtilsTest.cpp",
         "RefreshRateConfigsTest.cpp",
diff --git a/services/surfaceflinger/tests/unittests/DispSyncSourceTest.cpp b/services/surfaceflinger/tests/unittests/DispSyncSourceTest.cpp
index 0aa8cf5..2e705da 100644
--- a/services/surfaceflinger/tests/unittests/DispSyncSourceTest.cpp
+++ b/services/surfaceflinger/tests/unittests/DispSyncSourceTest.cpp
@@ -51,7 +51,6 @@
     AsyncCallRecorder<void (*)(nsecs_t)> mVSyncEventCallRecorder;
 
     static constexpr std::chrono::nanoseconds mPhaseOffset = 6ms;
-    static constexpr std::chrono::nanoseconds mOffsetThresholdForNextVsync = 16ms;
     static constexpr int mIterations = 100;
 };
 
@@ -79,8 +78,7 @@
 
 void DispSyncSourceTest::createDispSyncSource() {
     createDispSync();
-    mDispSyncSource = std::make_unique<DispSyncSource>(mDispSync.get(), mPhaseOffset.count(),
-                                                       mOffsetThresholdForNextVsync.count(), true,
+    mDispSyncSource = std::make_unique<DispSyncSource>(mDispSync.get(), mPhaseOffset.count(), true,
                                                        "DispSyncSourceTest");
     mDispSyncSource->setCallback(this);
 }
diff --git a/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h b/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h
index da4eea0..b50ddf5 100644
--- a/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h
+++ b/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h
@@ -22,7 +22,7 @@
 
 namespace android::scheduler {
 
-struct FakePhaseOffsets : PhaseOffsets {
+struct FakePhaseOffsets : PhaseConfiguration {
     static constexpr nsecs_t FAKE_PHASE_OFFSET_NS = 0;
 
     Offsets getOffsetsForRefreshRate(float) const override { return getCurrentOffsets(); }
@@ -30,8 +30,7 @@
     Offsets getCurrentOffsets() const override {
         return {{FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
                 {FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
-                {FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
-                FAKE_PHASE_OFFSET_NS};
+                {FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS}};
     }
 
     void setRefreshRateFps(float) override {}
diff --git a/services/surfaceflinger/tests/unittests/PhaseOffsetsTest.cpp b/services/surfaceflinger/tests/unittests/PhaseOffsetsTest.cpp
new file mode 100644
index 0000000..6360ec1
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/PhaseOffsetsTest.cpp
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2019 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.
+ */
+
+#undef LOG_TAG
+#define LOG_TAG "SchedulerUnittests"
+
+#include <gmock/gmock.h>
+#include <log/log.h>
+#include <thread>
+
+#include "Scheduler/PhaseOffsets.h"
+
+using namespace testing;
+
+namespace android {
+namespace scheduler {
+
+class TestablePhaseOffsetsAsDurations : public impl::PhaseDurations {
+public:
+    TestablePhaseOffsetsAsDurations(float currentFps, nsecs_t sfDuration, nsecs_t appDuration,
+                                    nsecs_t sfEarlyDuration, nsecs_t appEarlyDuration,
+                                    nsecs_t sfEarlyGlDuration, nsecs_t appEarlyGlDuration)
+          : impl::PhaseDurations({60.0f, 90.0f}, currentFps, sfDuration, appDuration,
+                                 sfEarlyDuration, appEarlyDuration, sfEarlyGlDuration,
+                                 appEarlyGlDuration) {}
+};
+
+class PhaseOffsetsTest : public testing::Test {
+protected:
+    PhaseOffsetsTest()
+          : mPhaseOffsets(60.0f, 10'500'000, 20'500'000, 16'000'000, 33'500'000, 13'500'000,
+                          38'000'000) {}
+
+    ~PhaseOffsetsTest() = default;
+
+    TestablePhaseOffsetsAsDurations mPhaseOffsets;
+};
+
+namespace {
+/* ------------------------------------------------------------------------
+ * Test cases
+ */
+TEST_F(PhaseOffsetsTest, getOffsetsForRefreshRate_60Hz) {
+    mPhaseOffsets.setRefreshRateFps(60.0f);
+    auto currentOffsets = mPhaseOffsets.getCurrentOffsets();
+    auto offsets = mPhaseOffsets.getOffsetsForRefreshRate(60.0f);
+
+    EXPECT_EQ(currentOffsets, offsets);
+    EXPECT_EQ(offsets.late.sf, 6'166'667);
+
+    EXPECT_EQ(offsets.late.app, 2'333'334);
+
+    EXPECT_EQ(offsets.early.sf, 666'667);
+
+    EXPECT_EQ(offsets.early.app, 500'001);
+
+    EXPECT_EQ(offsets.earlyGl.sf, 3'166'667);
+
+    EXPECT_EQ(offsets.earlyGl.app, 15'166'668);
+}
+
+TEST_F(PhaseOffsetsTest, getOffsetsForRefreshRate_90Hz) {
+    mPhaseOffsets.setRefreshRateFps(90.0f);
+    auto currentOffsets = mPhaseOffsets.getCurrentOffsets();
+    auto offsets = mPhaseOffsets.getOffsetsForRefreshRate(90.0f);
+
+    EXPECT_EQ(currentOffsets, offsets);
+    EXPECT_EQ(offsets.late.sf, 611'111);
+
+    EXPECT_EQ(offsets.late.app, 2'333'333);
+
+    EXPECT_EQ(offsets.early.sf, -4'888'889);
+
+    EXPECT_EQ(offsets.early.app, 6'055'555);
+
+    EXPECT_EQ(offsets.earlyGl.sf, -2'388'889);
+
+    EXPECT_EQ(offsets.earlyGl.app, 4'055'555);
+}
+
+TEST_F(PhaseOffsetsTest, getOffsetsForRefreshRate_DefaultOffsets) {
+    TestablePhaseOffsetsAsDurations phaseOffsetsWithDefaultValues(60.0f, -1, -1, -1, -1, -1, -1);
+
+    auto validateOffsets = [](auto& offsets) {
+        EXPECT_EQ(offsets.late.sf, 1'000'000);
+
+        EXPECT_EQ(offsets.late.app, 1'000'000);
+
+        EXPECT_EQ(offsets.early.sf, 1'000'000);
+
+        EXPECT_EQ(offsets.early.app, 1'000'000);
+
+        EXPECT_EQ(offsets.earlyGl.sf, 1'000'000);
+
+        EXPECT_EQ(offsets.earlyGl.app, 1'000'000);
+    };
+
+    phaseOffsetsWithDefaultValues.setRefreshRateFps(90.0f);
+    auto currentOffsets = phaseOffsetsWithDefaultValues.getCurrentOffsets();
+    auto offsets = phaseOffsetsWithDefaultValues.getOffsetsForRefreshRate(90.0f);
+    EXPECT_EQ(currentOffsets, offsets);
+    validateOffsets(offsets);
+
+    phaseOffsetsWithDefaultValues.setRefreshRateFps(60.0f);
+    currentOffsets = phaseOffsetsWithDefaultValues.getCurrentOffsets();
+    offsets = phaseOffsetsWithDefaultValues.getOffsetsForRefreshRate(90.0f);
+    EXPECT_EQ(currentOffsets, offsets);
+    validateOffsets(offsets);
+}
+
+} // namespace
+} // namespace scheduler
+} // namespace android
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 8a7c132..c6c3147 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -79,7 +79,8 @@
         return std::make_unique<android::impl::MessageQueue>();
     }
 
-    std::unique_ptr<scheduler::PhaseOffsets> createPhaseOffsets() override {
+    std::unique_ptr<scheduler::PhaseConfiguration> createPhaseConfiguration(
+            const scheduler::RefreshRateConfigs& /*refreshRateConfigs*/) override {
         return std::make_unique<scheduler::FakePhaseOffsets>();
     }
 
@@ -203,6 +204,8 @@
                 scheduler::RefreshRateStats>(*mFlinger->mRefreshRateConfigs, *mFlinger->mTimeStats,
                                              /*currentConfig=*/HwcConfigIndexType(0),
                                              /*powerMode=*/HWC_POWER_MODE_OFF);
+        mFlinger->mPhaseConfiguration =
+                mFactory.createPhaseConfiguration(*mFlinger->mRefreshRateConfigs);
 
         mScheduler =
                 new TestableScheduler(std::move(primaryDispSync), std::move(eventControlThread),
@@ -214,7 +217,7 @@
 
         mFlinger->mVSyncModulator.emplace(*mScheduler, mFlinger->mAppConnectionHandle,
                                           mFlinger->mSfConnectionHandle,
-                                          mFlinger->mPhaseOffsets->getCurrentOffsets());
+                                          mFlinger->mPhaseConfiguration->getCurrentOffsets());
     }
 
     void resetScheduler(Scheduler* scheduler) { mFlinger->mScheduler.reset(scheduler); }