diff --git a/res/layout/app_header.xml b/res/layout/app_header.xml
index 8c3ca4b6b0b..d9453f49b14 100644
--- a/res/layout/app_header.xml
+++ b/res/layout/app_header.xml
@@ -36,7 +36,7 @@
         android:layout_alignWithParentIfMissing="true"
         android:layout_centerVertical="true"
         android:textAppearance="@style/TextAppearance.Switch"
-        android:textColor="?android:attr/textColorPrimary"
+        android:textColor="@android:color/white"
         android:textAlignment="viewStart" />
 
     <ImageView
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 441034cffc0..f2edaca239d 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -6040,11 +6040,17 @@
    <string name="launch_by_default">Launch by default</string>
 
    <!-- Summary for app storage preference [CHAR LIMIT=15] -->
-   <string name="storage_summary_format"><xliff:g id="size" example="30.00MB">%1$s</xliff:g> used in <xliff:g id="storage_type" example="internal memory">%2$s</xliff:g></string>
-   <!-- Internal storage label [CHAR LIMIT=25] -->
-   <string name="storage_type_internal">internal memory</string>
-   <!-- External storage label [CHAR LIMIT=25] -->
-   <string name="storage_type_external">external memory</string>
+   <string name="storage_summary_format"><xliff:g id="size" example="30.00MB">%1$s</xliff:g> used in <xliff:g id="storage_type" example="internal storage">%2$s</xliff:g></string>
+
+   <!-- Summary describing internal storage for applications [CHAR LIMIT=25] -->
+   <string name="storage_type_internal">internal storage</string>
+   <!-- Summary describing external storage for applications [CHAR LIMIT=25] -->
+   <string name="storage_type_external">external storage</string>
+
+   <!-- Title for data usage screen when entered from app info [CHAR LIMIT=30] -->
+   <string name="app_data_usage">App data usage</string>
+   <!-- Summary for data usage preference [CHAR LIMIT=15] -->
+   <string name="data_summary_format"><xliff:g id="size" example="30.00MB">%1$s</xliff:g> used since <xliff:g id="date" example="Jan 12">%2$s</xliff:g></string>
 
    <!-- App notification summary with notifications enabled [CHAR LIMIT=40] -->
    <string name="notifications_enabled">On</string>
@@ -6068,4 +6074,7 @@
    <!-- Launch defaults preference summary with none set [CHAR LIMIT=40] -->
    <string name="launch_defaults_none">No defaults set</string>
 
+   <!-- Warning toast shown when data usage screen can't find specified app -->
+   <string name="unknown_app">Unknown app</string>
+
 </resources>
diff --git a/res/xml/installed_app_details.xml b/res/xml/installed_app_details.xml
index 05bea5c5634..2f72f5d27db 100644
--- a/res/xml/installed_app_details.xml
+++ b/res/xml/installed_app_details.xml
@@ -20,26 +20,26 @@
         android:key="header_view"
         android:layout="@layout/installed_app_details" />
 
-    <Preference
-        android:key="notification_settings"
-        android:title="@string/notification_section_header"
-        android:selectable="true" />
-
     <Preference
         android:key="storage_settings"
         android:title="@string/storage_settings"
         android:selectable="true" />
 
-    <Preference
-        android:key="permission_settings"
-        android:title="@string/permissions_label"
-        android:selectable="true" />
-
     <Preference
         android:key="data_settings"
         android:title="@string/data_size_label"
         android:selectable="true" />
 
+    <Preference
+        android:key="permission_settings"
+        android:title="@string/permissions_label"
+        android:selectable="true" />
+
+    <Preference
+        android:key="notification_settings"
+        android:title="@string/notification_section_header"
+        android:selectable="true" />
+
     <Preference
         android:key="preferred_settings"
         android:title="@string/launch_by_default"
diff --git a/src/com/android/settings/DataUsageSummary.java b/src/com/android/settings/DataUsageSummary.java
index cba08794bda..3ab1d239e26 100644
--- a/src/com/android/settings/DataUsageSummary.java
+++ b/src/com/android/settings/DataUsageSummary.java
@@ -62,6 +62,7 @@ import android.content.Intent;
 import android.content.Loader;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.UserInfo;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
@@ -120,6 +121,7 @@ import android.widget.ProgressBar;
 import android.widget.Spinner;
 import android.widget.Switch;
 import android.widget.TabHost;
+import android.widget.Toast;
 import android.widget.TabHost.OnTabChangeListener;
 import android.widget.TabHost.TabContentFactory;
 import android.widget.TabHost.TabSpec;
@@ -142,7 +144,6 @@ import com.android.settings.sim.SimSettings;
 import com.android.settings.widget.ChartDataUsageView;
 import com.android.settings.widget.ChartDataUsageView.DataUsageChartListener;
 import com.android.settings.widget.ChartNetworkSeriesView;
-
 import com.google.android.collect.Lists;
 
 import libcore.util.Objects;
@@ -191,6 +192,8 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
             "data_usage_disable_mobile_limit";
     private static final String DATA_USAGE_CYCLE_KEY = "data_usage_cycle";
 
+    public static final String EXTRA_SHOW_APP_IMMEDIATE_PKG = "showAppImmediatePkg";
+
     private static final int LOADER_CHART_DATA = 2;
     private static final int LOADER_SUMMARY = 3;
 
@@ -281,6 +284,9 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
 
     private UidDetailProvider mUidDetailProvider;
 
+    // Indicates request to show app immediately rather than list.
+    private String mShowAppImmediatePkg;
+
     /**
      * Local cache of data enabled for subId, used to work around delays.
      */
@@ -332,6 +338,13 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
             mShowEthernet = true;
         }
 
+        mUidDetailProvider = new UidDetailProvider(context);
+
+        Bundle arguments = getArguments();
+        if (arguments != null) {
+            mShowAppImmediatePkg = arguments.getString(EXTRA_SHOW_APP_IMMEDIATE_PKG);
+        }
+
         setHasOptionsMenu(true);
     }
 
@@ -342,7 +355,6 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
         final Context context = inflater.getContext();
         final View view = inflater.inflate(R.layout.data_usage_summary, container, false);
 
-        mUidDetailProvider = new UidDetailProvider(context);
 
         mTabHost = (TabHost) view.findViewById(android.R.id.tabhost);
         mTabsContainer = (ViewGroup) view.findViewById(R.id.tabs_container);
@@ -448,9 +460,34 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
         mListView.setOnItemClickListener(mListListener);
         mListView.setAdapter(mAdapter);
 
+        showRequestedAppIfNeeded();
+
         return view;
     }
 
+    private void showRequestedAppIfNeeded() {
+        if (mShowAppImmediatePkg == null) {
+            return;
+        }
+        try {
+            int uid = getActivity().getPackageManager().getPackageUid(mShowAppImmediatePkg,
+                UserHandle.myUserId());
+            AppItem app = new AppItem(uid);
+            app.addUid(uid);
+
+            final UidDetail detail = mUidDetailProvider.getUidDetail(app.key, true);
+            // When we are going straight to an app then we are coming from App Info and want
+            // a header at the top.
+            AppHeader.createAppHeader(getActivity(), detail.icon, detail.label, null);
+            AppDetailsFragment.show(DataUsageSummary.this, app, detail.label, false);
+        } catch (NameNotFoundException e) {
+            Log.w(TAG, "Could not find " + mShowAppImmediatePkg, e);
+            Toast.makeText(getActivity(), getString(R.string.unknown_app), Toast.LENGTH_LONG)
+                    .show();
+            getActivity().finish();
+        }
+    }
+
     @Override
     public void onViewStateRestored(Bundle savedInstanceState) {
         super.onViewStateRestored(savedInstanceState);
@@ -639,6 +676,10 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
      * only be assigned after initial layout is complete.
      */
     private void ensureLayoutTransitions() {
+        if (mShowAppImmediatePkg != null) {
+            // If we are skipping right to showing an app, we don't care about transitions.
+            return;
+        }
         // skip when already setup
         if (mChart.getLayoutTransition() != null) return;
 
@@ -1887,6 +1928,11 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
         private static final String EXTRA_APP = "app";
 
         public static void show(DataUsageSummary parent, AppItem app, CharSequence label) {
+            show(parent, app, label, true);
+        }
+
+        public static void show(DataUsageSummary parent, AppItem app, CharSequence label,
+                boolean addToBack) {
             if (!parent.isAdded()) return;
 
             final Bundle args = new Bundle();
@@ -1897,7 +1943,9 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
             fragment.setTargetFragment(parent, 0);
             final FragmentTransaction ft = parent.getFragmentManager().beginTransaction();
             ft.add(fragment, TAG_APP_DETAILS);
-            ft.addToBackStack(TAG_APP_DETAILS);
+            if (addToBack) {
+                ft.addToBackStack(TAG_APP_DETAILS);
+            }
             ft.setBreadCrumbTitle(
                     parent.getResources().getString(R.string.data_usage_app_summary_title));
             ft.commitAllowingStateLoss();
diff --git a/src/com/android/settings/applications/InstalledAppDetails.java b/src/com/android/settings/applications/InstalledAppDetails.java
index 59dbd0ee7c6..7f20b3254f0 100755
--- a/src/com/android/settings/applications/InstalledAppDetails.java
+++ b/src/com/android/settings/applications/InstalledAppDetails.java
@@ -19,23 +19,33 @@ package com.android.settings.applications;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.AlertDialog;
+import android.app.LoaderManager.LoaderCallbacks;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.Loader;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.ResolveInfo;
+import android.net.INetworkStatsService;
+import android.net.INetworkStatsSession;
+import android.net.NetworkTemplate;
+import android.net.TrafficStats;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Bundle;
+import android.os.RemoteException;
+import android.os.ServiceManager;
 import android.os.UserHandle;
 import android.preference.Preference;
 import android.preference.Preference.OnPreferenceClickListener;
 import android.provider.Settings;
+import android.text.format.DateUtils;
+import android.text.format.Formatter;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
@@ -44,10 +54,14 @@ import android.widget.Button;
 import android.widget.ImageView;
 import android.widget.TextView;
 
+import com.android.settings.DataUsageSummary;
+import com.android.settings.DataUsageSummary.AppItem;
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 import com.android.settings.applications.ApplicationsState.AppEntry;
+import com.android.settings.net.ChartData;
+import com.android.settings.net.ChartDataLoader;
 import com.android.settings.notification.NotificationAppList;
 import com.android.settings.notification.NotificationAppList.AppRow;
 import com.android.settings.notification.NotificationAppList.Backend;
@@ -76,6 +90,8 @@ public class InstalledAppDetails extends AppInfoBase
     public static final int REQUEST_UNINSTALL = 0;
     private static final int SUB_INFO_FRAGMENT = 1;
 
+    private static final int LOADER_CHART_DATA = 2;
+
     private static final int DLG_FORCE_STOP = DLG_BASE + 1;
     private static final int DLG_DISABLE = DLG_BASE + 2;
     private static final int DLG_SPECIAL_DISABLE = DLG_BASE + 3;
@@ -109,6 +125,9 @@ public class InstalledAppDetails extends AppInfoBase
     // Used for updating notification preference.
     private final Backend mBackend = new Backend();
 
+    private ChartData mChartData;
+    private INetworkStatsSession mStatsSession;
+
     private boolean handleDisableable(Button button) {
         boolean disableable = false;
         // Try to prevent the user from bricking their phone
@@ -207,6 +226,37 @@ public class InstalledAppDetails extends AppInfoBase
 
         setHasOptionsMenu(true);
         addPreferencesFromResource(R.xml.installed_app_details);
+
+        INetworkStatsService statsService = INetworkStatsService.Stub.asInterface(
+                ServiceManager.getService(Context.NETWORK_STATS_SERVICE));
+        try {
+            mStatsSession = statsService.openSession();
+        } catch (RemoteException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        AppItem app = new AppItem(mAppEntry.info.uid);
+        app.addUid(mAppEntry.info.uid);
+        getLoaderManager().restartLoader(LOADER_CHART_DATA,
+                ChartDataLoader.buildArgs(NetworkTemplate.buildTemplateMobileWildcard(), app),
+                mDataCallbacks);
+    }
+
+    @Override
+    public void onPause() {
+        getLoaderManager().destroyLoader(LOADER_CHART_DATA);
+        super.onPause();
+    }
+
+    @Override
+    public void onDestroy() {
+        TrafficStats.closeQuietly(mStatsSession);
+
+        super.onDestroy();
     }
 
     public void onActivityCreated(Bundle savedInstanceState) {
@@ -223,8 +273,6 @@ public class InstalledAppDetails extends AppInfoBase
         mLaunchPreference.setOnPreferenceClickListener(this);
         mDataPreference = findPreference(KEY_DATA);
         mDataPreference.setOnPreferenceClickListener(this);
-        // Data isn't ready, lets just pull it for now.
-        getPreferenceScreen().removePreference(mDataPreference);
     }
 
     private void handleHeader() {
@@ -384,6 +432,7 @@ public class InstalledAppDetails extends AppInfoBase
                 mPm, context));
         mNotificationPreference.setSummary(getNotificationSummary(mAppEntry, context,
                 mBackend));
+        mDataPreference.setSummary(getDataSummary());
 
         if (!mInitialized) {
             // First time init: are we displaying an uninstalled app?
@@ -410,6 +459,18 @@ public class InstalledAppDetails extends AppInfoBase
         return true;
     }
 
+    private CharSequence getDataSummary() {
+        if (mChartData != null) {
+            long totalBytes = mChartData.detail.getTotalBytes();
+            Context context = getActivity();
+            return getString(R.string.data_summary_format,
+                    Formatter.formatFileSize(context, totalBytes),
+                    DateUtils.formatDateTime(context, mChartData.detail.getStart(),
+                            DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_ABBREV_MONTH));
+        }
+        return getString(R.string.computing_size);
+    }
+
     @Override
     protected AlertDialog createDialog(int id, int errorCode) {
         switch (id) {
@@ -579,7 +640,13 @@ public class InstalledAppDetails extends AppInfoBase
         } else if (preference == mLaunchPreference) {
             startAppInfoFragment(AppLaunchSettings.class, mLaunchPreference.getTitle());
         } else if (preference == mDataPreference) {
-            // Not yet.
+            Bundle args = new Bundle();
+            args.putString(DataUsageSummary.EXTRA_SHOW_APP_IMMEDIATE_PKG,
+                    mAppEntry.info.packageName);
+
+            SettingsActivity sa = (SettingsActivity) getActivity();
+            sa.startPreferencePanel(DataUsageSummary.class.getName(), args, -1,
+                    getString(R.string.app_data_usage), this, SUB_INFO_FRAGMENT);
         } else {
             return false;
         }
@@ -627,6 +694,26 @@ public class InstalledAppDetails extends AppInfoBase
         }
     }
 
+    private final LoaderCallbacks<ChartData> mDataCallbacks = new LoaderCallbacks<ChartData>() {
+
+        @Override
+        public Loader<ChartData> onCreateLoader(int id, Bundle args) {
+            return new ChartDataLoader(getActivity(), mStatsSession, args);
+        }
+
+        @Override
+        public void onLoadFinished(Loader<ChartData> loader, ChartData data) {
+            mChartData = data;
+            mDataPreference.setSummary(getDataSummary());
+        }
+
+        @Override
+        public void onLoaderReset(Loader<ChartData> loader) {
+            mChartData = null;
+            mDataPreference.setSummary(getDataSummary());
+        }
+    };
+
     private final BroadcastReceiver mCheckKillProcessesReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {