diff --git a/src/com/android/settings/datausage/DataUsageSummaryPreference.java b/src/com/android/settings/datausage/DataUsageSummaryPreference.java
index 86e01ed2688..a14fce3a29b 100644
--- a/src/com/android/settings/datausage/DataUsageSummaryPreference.java
+++ b/src/com/android/settings/datausage/DataUsageSummaryPreference.java
@@ -67,15 +67,9 @@ public class DataUsageSummaryPreference extends Preference {
     private CharSequence mStartLabel;
     private CharSequence mEndLabel;
 
-    /** large vs small size is 36/16 ~ 2.25 */
-    private static final float LARGER_FONT_RATIO = 2.25f;
-    private static final float SMALLER_FONT_RATIO = 1.0f;
-
-    private boolean mDefaultTextColorSet;
-    private int mDefaultTextColor;
     private int mNumPlans;
     /** The specified un-initialized value for cycle time */
-    private final long CYCLE_TIME_UNINITIAL_VALUE = 0;
+    private static final long CYCLE_TIME_UNINITIAL_VALUE = 0;
     /** The ending time of the billing cycle in milliseconds since epoch. */
     private long mCycleEndTimeMs;
     /** The time of the last update in standard milliseconds since the epoch */
diff --git a/src/com/android/settings/datausage/DataUsageSummaryPreferenceController.java b/src/com/android/settings/datausage/DataUsageSummaryPreferenceController.java
index fe20a01b97d..3aeb8689ed8 100644
--- a/src/com/android/settings/datausage/DataUsageSummaryPreferenceController.java
+++ b/src/com/android/settings/datausage/DataUsageSummaryPreferenceController.java
@@ -64,8 +64,6 @@ public class DataUsageSummaryPreferenceController extends TelephonyBasePreferenc
     private static final String TAG = "DataUsageController";
     private static final String KEY = "status_header";
     private static final long PETA = 1000000000000000L;
-    private static final float RELATIVE_SIZE_LARGE = 1.25f * 1.25f;  // (1/0.8)^2
-    private static final float RELATIVE_SIZE_SMALL = 1.0f / RELATIVE_SIZE_LARGE;  // 0.8^2
 
     private EntityHeaderController mEntityHeaderController;
     private final Lifecycle mLifecycle;
@@ -74,7 +72,6 @@ public class DataUsageSummaryPreferenceController extends TelephonyBasePreferenc
     protected DataUsageInfoController mDataInfoController;
     private NetworkTemplate mDefaultTemplate;
     protected NetworkPolicyEditor mPolicyEditor;
-    private int mDataUsageTemplate;
     private boolean mHasMobileData;
 
     /** Name of the carrier, or null if not available */
@@ -95,8 +92,6 @@ public class DataUsageSummaryPreferenceController extends TelephonyBasePreferenc
     private long mDataBarSize;
     /** The number of bytes used since the start of the cycle. */
     private long mDataplanUse;
-    /** The starting time of the billing cycle in ms since the epoch */
-    private long mCycleStart;
     /** The ending time of the billing cycle in ms since the epoch */
     private long mCycleEnd;
 
@@ -134,13 +129,10 @@ public class DataUsageSummaryPreferenceController extends TelephonyBasePreferenc
         mDataInfoController = new DataUsageInfoController();
 
         if (subInfo != null) {
-            mDataUsageTemplate = R.string.cell_data_template;
             mDefaultTemplate = DataUsageLib.getMobileTemplate(context, subscriptionId);
         } else if (DataUsageUtils.hasWifiRadio(context)) {
-            mDataUsageTemplate = R.string.wifi_data_template;
             mDefaultTemplate = new NetworkTemplate.Builder(NetworkTemplate.MATCH_WIFI).build();
         } else {
-            mDataUsageTemplate = R.string.ethernet_data_template;
             mDefaultTemplate = DataUsageUtils.getDefaultTemplate(context, subscriptionId);
         }
     }
@@ -156,7 +148,6 @@ public class DataUsageSummaryPreferenceController extends TelephonyBasePreferenc
             DataUsageInfoController dataInfoController,
             NetworkTemplate defaultTemplate,
             NetworkPolicyEditor policyEditor,
-            int dataUsageTemplate,
             Activity activity,
             Lifecycle lifecycle,
             EntityHeaderController entityHeaderController,
@@ -167,7 +158,6 @@ public class DataUsageSummaryPreferenceController extends TelephonyBasePreferenc
         mDataInfoController = dataInfoController;
         mDefaultTemplate = defaultTemplate;
         mPolicyEditor = policyEditor;
-        mDataUsageTemplate = dataUsageTemplate;
         mHasMobileData = true;
         mLifecycle = lifecycle;
         mEntityHeaderController = entityHeaderController;
@@ -302,7 +292,6 @@ public class DataUsageSummaryPreferenceController extends TelephonyBasePreferenc
         mDataplanSize = -1L;
         mDataBarSize = mDataInfoController.getSummaryLimit(info);
         mDataplanUse = info.usageLevel;
-        mCycleStart = info.cycleStart;
         mCycleEnd = info.cycleEnd;
         mSnapshotTime = -1L;
 
@@ -322,7 +311,6 @@ public class DataUsageSummaryPreferenceController extends TelephonyBasePreferenc
 
                 RecurrenceRule rule = primaryPlan.getCycleRule();
                 if (rule != null && rule.start != null && rule.end != null) {
-                    mCycleStart = rule.start.toEpochSecond() * 1000L;
                     mCycleEnd = rule.end.toEpochSecond() * 1000L;
                 }
                 mSnapshotTime = primaryPlan.getDataUsageTime();
diff --git a/tests/robotests/src/com/android/settings/datausage/DataUsageSummaryPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/datausage/DataUsageSummaryPreferenceControllerTest.java
index 71d5d7e8f7f..032d68fba99 100644
--- a/tests/robotests/src/com/android/settings/datausage/DataUsageSummaryPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/datausage/DataUsageSummaryPreferenceControllerTest.java
@@ -44,7 +44,6 @@ import androidx.preference.PreferenceFragmentCompat;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.android.internal.logging.nano.MetricsProto;
-import com.android.settings.R;
 import com.android.settings.testutils.FakeFeatureFactory;
 import com.android.settings.testutils.shadow.ShadowEntityHeaderController;
 import com.android.settings.widget.EntityHeaderController;
@@ -147,7 +146,6 @@ public class DataUsageSummaryPreferenceControllerTest {
                 mDataInfoController,
                 mNetworkTemplate,
                 mPolicyEditor,
-                R.string.cell_data_template,
                 mActivity, null, null, null, mDefaultSubscriptionId));
         doReturn(null).when(mController).getSubscriptionInfo(
                 SubscriptionManager.INVALID_SUBSCRIPTION_ID);
@@ -375,7 +373,6 @@ public class DataUsageSummaryPreferenceControllerTest {
                 mDataInfoController,
                 mNetworkTemplate,
                 mPolicyEditor,
-                R.string.cell_data_template,
                 mActivity, mLifecycle, mHeaderController, mPreferenceFragment,
                 mDefaultSubscriptionId));