diff --git a/java/com/android/dialer/app/res/xml/display_options_settings.xml b/java/com/android/dialer/app/res/xml/display_options_settings.xml
index 60301db..f154122 100644
--- a/java/com/android/dialer/app/res/xml/display_options_settings.xml
+++ b/java/com/android/dialer/app/res/xml/display_options_settings.xml
@@ -25,7 +25,7 @@
       android:entries="@array/contact_sort_order_entries"
       android:entryValues="@array/contact_sort_order_values"
       android:title="@string/display_options_sort_list_by"
-      android:defaultValue="1"/>
+      android:defaultValue="@string/display_options_sort_by_given_name_value"/>
 
   <ListPreference
       android:dialogTitle="@string/display_options_view_names_as"
@@ -34,6 +34,6 @@
       android:entries="@array/contact_display_order_entries"
       android:entryValues="@array/contact_display_order_values"
       android:title="@string/display_options_view_names_as"
-      android:defaultValue="1"/>
+      android:defaultValue="@string/display_options_view_given_name_first_value"/>
 
 </PreferenceScreen>
diff --git a/java/com/android/dialer/contacts/ContactsModule.java b/java/com/android/dialer/contacts/ContactsModule.java
index 73731e5..2a27b76 100644
--- a/java/com/android/dialer/contacts/ContactsModule.java
+++ b/java/com/android/dialer/contacts/ContactsModule.java
@@ -16,22 +16,35 @@
 
 package com.android.dialer.contacts;
 
+import android.content.Context;
+import android.os.UserManager;
 import com.android.dialer.contacts.displaypreference.ContactDisplayPreferences;
 import com.android.dialer.contacts.displaypreference.ContactDisplayPreferencesImpl;
+import com.android.dialer.contacts.displaypreference.ContactDisplayPreferencesStub;
 import com.android.dialer.contacts.hiresphoto.HighResolutionPhotoRequester;
 import com.android.dialer.contacts.hiresphoto.HighResolutionPhotoRequesterImpl;
+import com.android.dialer.inject.ApplicationContext;
 import com.android.dialer.inject.DialerVariant;
 import com.android.dialer.inject.InstallIn;
 import dagger.Binds;
+import dagger.Lazy;
 import dagger.Module;
+import dagger.Provides;
 
 /** Module for standard {@link ContactsComponent} */
 @InstallIn(variants = {DialerVariant.DIALER_TEST})
 @Module
 public abstract class ContactsModule {
-  @Binds
-  public abstract ContactDisplayPreferences toContactDisplayPreferencesImpl(
-      ContactDisplayPreferencesImpl impl);
+  @Provides
+  public static ContactDisplayPreferences provideContactDisplayPreferences(
+      @ApplicationContext Context appContext,
+      Lazy<ContactDisplayPreferencesImpl> impl,
+      ContactDisplayPreferencesStub stub) {
+    if (appContext.getSystemService(UserManager.class).isUserUnlocked()) {
+      return impl.get();
+    }
+    return stub;
+  }
 
   @Binds
   public abstract HighResolutionPhotoRequester toHighResolutionPhotoRequesterImpl(
diff --git a/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesImpl.java b/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesImpl.java
index 6072cc1..4f67b17 100644
--- a/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesImpl.java
+++ b/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesImpl.java
@@ -23,7 +23,10 @@
 import com.android.dialer.inject.ApplicationContext;
 import javax.inject.Inject;
 
-/** Implementation of {@link ContactDisplayPreferences} backed by a {@link SharedPreferences} */
+/**
+ * Implementation of {@link ContactDisplayPreferences} backed by a {@link SharedPreferences}. Can
+ * only be instantiated when the device is unlocked.
+ */
 public final class ContactDisplayPreferencesImpl implements ContactDisplayPreferences {
 
   private final Context appContext;
@@ -35,7 +38,7 @@
   ContactDisplayPreferencesImpl(@ApplicationContext Context appContext) {
     this.appContext = appContext;
     // @Unencrypted preference would be a better choice, but Android Preference only supports the
-    // default file. Names cannot be shown on @Unencrypted anyway.
+    // default file. Stub should be used instead when device is locked.
     this.sharedPreferences = PreferenceManager.getDefaultSharedPreferences(appContext);
     displayOrderKey = appContext.getString(R.string.display_options_view_names_as_key);
     sortOrderKey = appContext.getString(R.string.display_options_sort_list_by_key);
diff --git a/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesStub.java b/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesStub.java
new file mode 100644
index 0000000..a42a94b
--- /dev/null
+++ b/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesStub.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2018 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
+ */
+
+package com.android.dialer.contacts.displaypreference;
+
+import javax.inject.Inject;
+
+/**
+ * Stub implementation of {@link ContactDisplayPreferences} that always returns primary. Used when
+ * the device is locked and regular storage is not available.
+ */
+public final class ContactDisplayPreferencesStub implements ContactDisplayPreferences {
+
+  @Inject
+  ContactDisplayPreferencesStub() {}
+
+  @Override
+  public DisplayOrder getDisplayOrder() {
+    return DisplayOrder.PRIMARY;
+  }
+
+  @Override
+  public void setDisplayOrder(DisplayOrder displayOrder) {
+    // Do nothing
+  }
+
+  @Override
+  public SortOrder getSortOrder() {
+    return SortOrder.BY_PRIMARY;
+  }
+
+  @Override
+  public void setSortOrder(SortOrder sortOrder) {
+    // Do nothing
+  }
+}