diff --git a/src/com/android/settings/fuelgauge/PowerUsageSummary.java b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
index ccbb509572a..1e4302a35c6 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageSummary.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
@@ -85,6 +85,7 @@ public class PowerUsageSummary extends PowerUsageBase implements
     private static final boolean USE_FAKE_DATA = false;
     private static final String KEY_APP_LIST = "app_list";
     private static final String KEY_BATTERY_HEADER = "battery_header";
+    private static final String KEY_SHOW_ALL_APPS = "show_all_apps";
     private static final int MAX_ITEMS_TO_LIST = USE_FAKE_DATA ? 30 : 10;
     private static final int MIN_AVERAGE_POWER_THRESHOLD_MILLI_AMP = 10;
 
@@ -242,6 +243,7 @@ public class PowerUsageSummary extends PowerUsageBase implements
         mAnomalySparseArray = new SparseArray<>();
 
         restartBatteryInfoLoader();
+        restoreSavedInstance(icicle);
     }
 
     @Override
@@ -264,6 +266,12 @@ public class PowerUsageSummary extends PowerUsageBase implements
         }
     }
 
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putBoolean(KEY_SHOW_ALL_APPS, mShowAllApps);
+    }
+
     @Override
     public boolean onPreferenceTreeClick(Preference preference) {
         if (mAnomalySummaryPreferenceController.onPreferenceTreeClick(preference)) {
@@ -375,6 +383,13 @@ public class PowerUsageSummary extends PowerUsageBase implements
         }
     }
 
+    @VisibleForTesting
+    void restoreSavedInstance(Bundle savedInstance) {
+        if (savedInstance != null) {
+            mShowAllApps = savedInstance.getBoolean(KEY_SHOW_ALL_APPS, false);
+        }
+    }
+
     private void addNotAvailableMessage() {
         final String NOT_AVAILABLE = "not_available";
         Preference notAvailable = getCachedPreference(NOT_AVAILABLE);
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageSummaryTest.java b/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageSummaryTest.java
index 345ced1c8e2..d110ef0ea0c 100644
--- a/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageSummaryTest.java
+++ b/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageSummaryTest.java
@@ -25,6 +25,7 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.content.ContentResolver;
 import android.os.PowerManager;
+import android.support.v7.preference.PreferenceScreen;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
 import android.util.SparseArray;
@@ -145,6 +146,8 @@ public class PowerUsageSummaryTest {
     private LoaderManager mLoaderManager;
     @Mock
     private ContentResolver mContentResolver;
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
 
     private List<BatterySipper> mUsageList;
     private Context mRealContext;
@@ -478,6 +481,18 @@ public class PowerUsageSummaryTest {
         assertThat(summary1.getText().toString().contains(OLD_EST_SUFFIX));
     }
 
+    @Test
+    public void testSaveInstanceState_showAllAppsRestored() {
+        Bundle bundle = new Bundle();
+        mFragment.mShowAllApps = true;
+        doReturn(mPreferenceScreen).when(mFragment).getPreferenceScreen();
+
+        mFragment.onSaveInstanceState(bundle);
+        mFragment.restoreSavedInstance(bundle);
+
+        assertThat(mFragment.mShowAllApps).isTrue();
+    }
+
     public static class TestFragment extends PowerUsageSummary {
 
         private Context mContext;