diff --git a/src/com/android/settings/fuelgauge/batteryusage/BatteryChartView.java b/src/com/android/settings/fuelgauge/batteryusage/BatteryChartView.java
index b51eacb..fc6daf7 100644
--- a/src/com/android/settings/fuelgauge/batteryusage/BatteryChartView.java
+++ b/src/com/android/settings/fuelgauge/batteryusage/BatteryChartView.java
@@ -20,7 +20,6 @@
 import static java.lang.Math.round;
 import static java.util.Objects.requireNonNull;
 
-import android.accessibilityservice.AccessibilityServiceInfo;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Canvas;
@@ -29,13 +28,11 @@
 import android.graphics.Paint;
 import android.graphics.Path;
 import android.graphics.Rect;
-import android.os.Handler;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.HapticFeedbackConstants;
 import android.view.MotionEvent;
 import android.view.View;
-import android.view.accessibility.AccessibilityManager;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
@@ -43,20 +40,15 @@
 import androidx.appcompat.widget.AppCompatImageView;
 
 import com.android.settings.R;
-import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.Utils;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;
 
 /** A widget component to draw chart graph. */
-public class BatteryChartView extends AppCompatImageView implements View.OnClickListener,
-        AccessibilityManager.AccessibilityStateChangeListener {
+public class BatteryChartView extends AppCompatImageView implements View.OnClickListener {
     private static final String TAG = "BatteryChartView";
-    private static final List<String> ACCESSIBILITY_SERVICE_NAMES =
-            Arrays.asList("SwitchAccessService", "TalkBackService", "JustSpeakService");
 
     private static final int DIVIDER_COLOR = Color.parseColor("#CDCCC5");
     private static final long UPDATE_STATE_DELAYED_TIME = 500L;
@@ -67,48 +59,31 @@
         void onSelect(int trapezoidIndex);
     }
 
-    private BatteryChartViewModel mViewModel;
+    private final String[] mPercentages = getPercentages();
+    private final Rect mIndent = new Rect();
+    private final Rect[] mPercentageBounds = new Rect[]{new Rect(), new Rect(), new Rect()};
+    private final List<Rect> mAxisLabelsBounds = new ArrayList<>();
 
+    private BatteryChartViewModel mViewModel;
+    private int mHoveredIndex = BatteryChartViewModel.SELECTED_INDEX_INVALID;
     private int mDividerWidth;
     private int mDividerHeight;
     private float mTrapezoidVOffset;
     private float mTrapezoidHOffset;
-    private boolean mIsSlotsClickabled;
-    private String[] mPercentages = getPercentages();
-
-    @VisibleForTesting
-    int mHoveredIndex = BatteryChartViewModel.SELECTED_INDEX_INVALID;
-
-    // Colors for drawing the trapezoid shape and dividers.
     private int mTrapezoidColor;
     private int mTrapezoidSolidColor;
     private int mTrapezoidHoverColor;
-    // For drawing the percentage information.
     private int mTextPadding;
-    private final Rect mIndent = new Rect();
-    private final Rect[] mPercentageBounds =
-            new Rect[]{new Rect(), new Rect(), new Rect()};
-    // For drawing the axis label information.
-    private final List<Rect> mAxisLabelsBounds = new ArrayList<>();
-
-
-    @VisibleForTesting
-    Handler mHandler = new Handler();
-    @VisibleForTesting
-    final Runnable mUpdateClickableStateRun = () -> updateClickableState();
-
-    private Paint mTextPaint;
     private Paint mDividerPaint;
     private Paint mTrapezoidPaint;
+    private Paint mTextPaint;
+    private BatteryChartView.OnSelectListener mOnSelectListener;
 
     @VisibleForTesting
-    Paint mTrapezoidCurvePaint = null;
-    @VisibleForTesting
     TrapezoidSlot[] mTrapezoidSlots;
     // Records the location to calculate selected index.
     @VisibleForTesting
     float mTouchUpEventX = Float.MIN_VALUE;
-    private BatteryChartView.OnSelectListener mOnSelectListener;
 
     public BatteryChartView(Context context) {
         super(context, null);
@@ -261,66 +236,6 @@
         view.performHapticFeedback(HapticFeedbackConstants.CONTEXT_CLICK);
     }
 
-    @Override
-    public void onAttachedToWindow() {
-        super.onAttachedToWindow();
-        updateClickableState();
-        mContext.getSystemService(AccessibilityManager.class)
-                .addAccessibilityStateChangeListener(/*listener=*/ this);
-    }
-
-    @Override
-    public void onDetachedFromWindow() {
-        super.onDetachedFromWindow();
-        mContext.getSystemService(AccessibilityManager.class)
-                .removeAccessibilityStateChangeListener(/*listener=*/ this);
-        mHandler.removeCallbacks(mUpdateClickableStateRun);
-    }
-
-    @Override
-    public void onAccessibilityStateChanged(boolean enabled) {
-        Log.d(TAG, "onAccessibilityStateChanged:" + enabled);
-        mHandler.removeCallbacks(mUpdateClickableStateRun);
-        // We should delay it a while since accessibility manager will spend
-        // some times to bind with new enabled accessibility services.
-        mHandler.postDelayed(
-                mUpdateClickableStateRun, UPDATE_STATE_DELAYED_TIME);
-    }
-
-    private void updateClickableState() {
-        final Context context = mContext;
-        mIsSlotsClickabled =
-                FeatureFactory.getFactory(context)
-                        .getPowerUsageFeatureProvider(context)
-                        .isChartGraphSlotsEnabled(context)
-                        && !isAccessibilityEnabled(context);
-        Log.d(TAG, "isChartGraphSlotsEnabled:" + mIsSlotsClickabled);
-        setClickable(isClickable());
-        // Initializes the trapezoid curve paint for non-clickable case.
-        if (!mIsSlotsClickabled && mTrapezoidCurvePaint == null) {
-            mTrapezoidCurvePaint = new Paint();
-            mTrapezoidCurvePaint.setAntiAlias(true);
-            mTrapezoidCurvePaint.setColor(mTrapezoidSolidColor);
-            mTrapezoidCurvePaint.setStyle(Paint.Style.STROKE);
-            mTrapezoidCurvePaint.setStrokeWidth(mDividerWidth * 2);
-        } else if (mIsSlotsClickabled) {
-            mTrapezoidCurvePaint = null;
-            // Sets view model again to force update the click state.
-            setViewModel(mViewModel);
-        }
-        invalidate();
-    }
-
-    @Override
-    public void setClickable(boolean clickable) {
-        super.setClickable(mIsSlotsClickabled && clickable);
-    }
-
-    @VisibleForTesting
-    void setClickableForce(boolean clickable) {
-        super.setClickable(clickable);
-    }
-
     private void initializeTrapezoidSlots(int count) {
         mTrapezoidSlots = new TrapezoidSlot[count];
         for (int index = 0; index < mTrapezoidSlots.length; index++) {
@@ -545,19 +460,14 @@
         for (int index = 0; index < mTrapezoidSlots.length; index++) {
             // Not draws the trapezoid for corner or not initialization cases.
             if (!isValidToDraw(mViewModel, index)) {
-                if (mTrapezoidCurvePaint != null && trapezoidCurvePath != null) {
-                    canvas.drawPath(trapezoidCurvePath, mTrapezoidCurvePaint);
-                    trapezoidCurvePath = null;
-                }
                 continue;
             }
             // Configures the trapezoid paint color.
-            final int trapezoidColor = mIsSlotsClickabled && (mViewModel.selectedIndex() == index
+            final int trapezoidColor = (mViewModel.selectedIndex() == index
                     || mViewModel.selectedIndex() == BatteryChartViewModel.SELECTED_INDEX_ALL)
                     ? mTrapezoidSolidColor : mTrapezoidColor;
-            final boolean isHoverState =
-                    mIsSlotsClickabled && mHoveredIndex == index
-                            && isValidToDraw(mViewModel, mHoveredIndex);
+            final boolean isHoverState = mHoveredIndex == index && isValidToDraw(mViewModel,
+                    mHoveredIndex);
             mTrapezoidPaint.setColor(isHoverState ? mTrapezoidHoverColor : trapezoidColor);
 
             final float leftTop = round(
@@ -574,22 +484,6 @@
             trapezoidPath.lineTo(mTrapezoidSlots[index].mLeft, leftTop);
             // Draws the trapezoid shape into canvas.
             canvas.drawPath(trapezoidPath, mTrapezoidPaint);
-
-            // Generates path for non-clickable trapezoid curve.
-            if (mTrapezoidCurvePaint != null) {
-                if (trapezoidCurvePath == null) {
-                    trapezoidCurvePath = new Path();
-                    trapezoidCurvePath.moveTo(mTrapezoidSlots[index].mLeft, leftTop);
-                } else {
-                    trapezoidCurvePath.lineTo(mTrapezoidSlots[index].mLeft, leftTop);
-                }
-                trapezoidCurvePath.lineTo(mTrapezoidSlots[index].mRight, rightTop);
-            }
-        }
-        // Draws the trapezoid curve for non-clickable case.
-        if (mTrapezoidCurvePaint != null && trapezoidCurvePath != null) {
-            canvas.drawPath(trapezoidCurvePath, mTrapezoidCurvePaint);
-            trapezoidCurvePath = null;
         }
     }
 
@@ -645,29 +539,6 @@
                 formatPercentage(/*percentage=*/ 0, /*round=*/ true)};
     }
 
-    @VisibleForTesting
-    static boolean isAccessibilityEnabled(Context context) {
-        final AccessibilityManager accessibilityManager =
-                context.getSystemService(AccessibilityManager.class);
-        if (!accessibilityManager.isEnabled()) {
-            return false;
-        }
-        final List<AccessibilityServiceInfo> serviceInfoList =
-                accessibilityManager.getEnabledAccessibilityServiceList(
-                        AccessibilityServiceInfo.FEEDBACK_SPOKEN
-                                | AccessibilityServiceInfo.FEEDBACK_GENERIC);
-        for (AccessibilityServiceInfo info : serviceInfoList) {
-            for (String serviceName : ACCESSIBILITY_SERVICE_NAMES) {
-                final String serviceId = info.getId();
-                if (serviceId != null && serviceId.contains(serviceName)) {
-                    Log.d(TAG, "acccessibilityEnabled:" + serviceId);
-                    return true;
-                }
-            }
-        }
-        return false;
-    }
-
     // A container class for each trapezoid left and right location.
     @VisibleForTesting
     static final class TrapezoidSlot {
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryChartViewTest.java b/tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryChartViewTest.java
index 8a43087..7e423e0 100644
--- a/tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryChartViewTest.java
+++ b/tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryChartViewTest.java
@@ -17,17 +17,11 @@
 
 import static com.google.common.truth.Truth.assertThat;
 
-import static org.mockito.ArgumentMatchers.anyInt;
-import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.spy;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
 
-import android.accessibilityservice.AccessibilityServiceInfo;
 import android.content.Context;
 import android.os.LocaleList;
 import android.view.View;
-import android.view.accessibility.AccessibilityManager;
 
 import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
 import com.android.settings.testutils.FakeFeatureFactory;
@@ -40,8 +34,6 @@
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 
-import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;
 
@@ -54,10 +46,6 @@
     private PowerUsageFeatureProvider mPowerUsageFeatureProvider;
 
     @Mock
-    private AccessibilityServiceInfo mMockAccessibilityServiceInfo;
-    @Mock
-    private AccessibilityManager mMockAccessibilityManager;
-    @Mock
     private View mMockView;
 
     @Before
@@ -69,34 +57,6 @@
         mContext.getResources().getConfiguration().setLocales(
                 new LocaleList(new Locale("en_US")));
         mBatteryChartView = new BatteryChartView(mContext);
-        doReturn(mMockAccessibilityManager).when(mContext)
-                .getSystemService(AccessibilityManager.class);
-        doReturn("TalkBackService").when(mMockAccessibilityServiceInfo).getId();
-        doReturn(Arrays.asList(mMockAccessibilityServiceInfo))
-                .when(mMockAccessibilityManager)
-                .getEnabledAccessibilityServiceList(anyInt());
-    }
-
-    @Test
-    public void isAccessibilityEnabled_disable_returnFalse() {
-        doReturn(false).when(mMockAccessibilityManager).isEnabled();
-        assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isFalse();
-    }
-
-    @Test
-    public void isAccessibilityEnabled_emptyInfo_returnFalse() {
-        doReturn(true).when(mMockAccessibilityManager).isEnabled();
-        doReturn(new ArrayList<AccessibilityServiceInfo>())
-                .when(mMockAccessibilityManager)
-                .getEnabledAccessibilityServiceList(anyInt());
-
-        assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isFalse();
-    }
-
-    @Test
-    public void isAccessibilityEnabled_validServiceId_returnTrue() {
-        doReturn(true).when(mMockAccessibilityManager).isEnabled();
-        assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isTrue();
     }
 
     @Test
@@ -130,116 +90,4 @@
         mBatteryChartView.onClick(mMockView);
         assertThat(selectedIndex[0]).isEqualTo(BatteryChartViewModel.SELECTED_INDEX_ALL);
     }
-
-    @Test
-    public void clickable_isChartGraphSlotsEnabledIsFalse_notClickable() {
-        mBatteryChartView.setClickableForce(true);
-        when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-                .thenReturn(false);
-
-        mBatteryChartView.onAttachedToWindow();
-
-        assertThat(mBatteryChartView.isClickable()).isFalse();
-        assertThat(mBatteryChartView.mTrapezoidCurvePaint).isNotNull();
-    }
-
-    @Test
-    public void clickable_accessibilityIsDisabled_clickable() {
-        mBatteryChartView.setClickableForce(true);
-        when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-                .thenReturn(true);
-        doReturn(false).when(mMockAccessibilityManager).isEnabled();
-
-        mBatteryChartView.onAttachedToWindow();
-
-        assertThat(mBatteryChartView.isClickable()).isTrue();
-        assertThat(mBatteryChartView.mTrapezoidCurvePaint).isNull();
-    }
-
-    @Test
-    public void clickable_accessibilityIsEnabledWithoutValidId_clickable() {
-        mBatteryChartView.setClickableForce(true);
-        when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-                .thenReturn(true);
-        doReturn(true).when(mMockAccessibilityManager).isEnabled();
-        doReturn(new ArrayList<AccessibilityServiceInfo>())
-                .when(mMockAccessibilityManager)
-                .getEnabledAccessibilityServiceList(anyInt());
-
-        mBatteryChartView.onAttachedToWindow();
-
-        assertThat(mBatteryChartView.isClickable()).isTrue();
-        assertThat(mBatteryChartView.mTrapezoidCurvePaint).isNull();
-    }
-
-    @Test
-    public void clickable_accessibilityIsEnabledWithValidId_notClickable() {
-        mBatteryChartView.setClickableForce(true);
-        when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-                .thenReturn(true);
-        doReturn(true).when(mMockAccessibilityManager).isEnabled();
-
-        mBatteryChartView.onAttachedToWindow();
-
-        assertThat(mBatteryChartView.isClickable()).isFalse();
-        assertThat(mBatteryChartView.mTrapezoidCurvePaint).isNotNull();
-    }
-
-    @Test
-    public void clickable_restoreFromNonClickableState() {
-        final List<Integer> levels = new ArrayList<Integer>();
-        final List<String> texts = new ArrayList<String>();
-        for (int index = 0; index < 13; index++) {
-            levels.add(index + 1);
-            texts.add("");
-        }
-        mBatteryChartView.setViewModel(new BatteryChartViewModel(levels, texts,
-                BatteryChartViewModel.AxisLabelPosition.BETWEEN_TRAPEZOIDS));
-        mBatteryChartView.setClickableForce(true);
-        when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-                .thenReturn(true);
-        doReturn(true).when(mMockAccessibilityManager).isEnabled();
-        mBatteryChartView.onAttachedToWindow();
-        // Ensures the testing environment is correct.
-        assertThat(mBatteryChartView.isClickable()).isFalse();
-        // Turns off accessibility service.
-        doReturn(false).when(mMockAccessibilityManager).isEnabled();
-
-        mBatteryChartView.onAttachedToWindow();
-
-        assertThat(mBatteryChartView.isClickable()).isTrue();
-    }
-
-    @Test
-    public void onAttachedToWindow_addAccessibilityStateChangeListener() {
-        mBatteryChartView.onAttachedToWindow();
-        verify(mMockAccessibilityManager)
-                .addAccessibilityStateChangeListener(mBatteryChartView);
-    }
-
-    @Test
-    public void onDetachedFromWindow_removeAccessibilityStateChangeListener() {
-        mBatteryChartView.onAttachedToWindow();
-        mBatteryChartView.mHandler.postDelayed(
-                mBatteryChartView.mUpdateClickableStateRun, 1000);
-
-        mBatteryChartView.onDetachedFromWindow();
-
-        verify(mMockAccessibilityManager)
-                .removeAccessibilityStateChangeListener(mBatteryChartView);
-        assertThat(mBatteryChartView.mHandler.hasCallbacks(
-                mBatteryChartView.mUpdateClickableStateRun))
-                .isFalse();
-    }
-
-    @Test
-    public void onAccessibilityStateChanged_postUpdateStateRunnable() {
-        mBatteryChartView.mHandler = spy(mBatteryChartView.mHandler);
-        mBatteryChartView.onAccessibilityStateChanged(/*enabled=*/ true);
-
-        verify(mBatteryChartView.mHandler)
-                .removeCallbacks(mBatteryChartView.mUpdateClickableStateRun);
-        verify(mBatteryChartView.mHandler)
-                .postDelayed(mBatteryChartView.mUpdateClickableStateRun, 500L);
-    }
 }