diff --git a/src/com/android/settings/network/WifiCallingPreferenceController.java b/src/com/android/settings/network/WifiCallingPreferenceController.java
index b35d4764a64..0e673fa528c 100644
--- a/src/com/android/settings/network/WifiCallingPreferenceController.java
+++ b/src/com/android/settings/network/WifiCallingPreferenceController.java
@@ -17,7 +17,6 @@ package com.android.settings.network;
 
 import android.content.Context;
 import android.support.v7.preference.Preference;
-import android.support.v7.preference.PreferenceScreen;
 import android.telephony.TelephonyManager;
 
 import com.android.ims.ImsManager;
@@ -35,13 +34,9 @@ public class WifiCallingPreferenceController extends PreferenceController {
     }
 
     @Override
-    public void displayPreference(PreferenceScreen screen) {
-        super.displayPreference(screen);
-        final Preference pref = screen.findPreference(KEY_WFC_SETTINGS);
-        if (pref != null) {
-            pref.setSummary(WifiCallingSettings.getWfcModeSummary(
-                    mContext, ImsManager.getWfcMode(mContext, mTm.isNetworkRoaming())));
-        }
+    public void updateState(Preference preference) {
+        preference.setSummary(WifiCallingSettings.getWfcModeSummary(
+                mContext, ImsManager.getWfcMode(mContext, mTm.isNetworkRoaming())));
     }
 
     @Override
diff --git a/tests/robotests/src/com/android/ims/ImsManager.java b/tests/robotests/src/com/android/ims/ImsManager.java
new file mode 100644
index 00000000000..a4d97b5a64b
--- /dev/null
+++ b/tests/robotests/src/com/android/ims/ImsManager.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2017 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.ims;
+
+import android.content.Context;
+
+/**
+ * Fake test class to com.android.ims.ImsManager
+ */
+public class ImsManager {
+
+    public static boolean wfcEnabledByPlatform;
+    public static boolean wfcProvisioned;
+
+    public static boolean isWfcEnabledByPlatform(Context context) {
+        return wfcEnabledByPlatform;
+    }
+
+    public static boolean isWfcProvisionedOnDevice(Context context) {
+        return wfcProvisioned;
+    }
+
+    public static int getWfcMode(Context context, boolean roaming) {
+        return 0;
+    }
+
+    public static boolean isWfcEnabledByUser(Context context) {
+        return false;
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/network/WifiCallingPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/network/WifiCallingPreferenceControllerTest.java
new file mode 100644
index 00000000000..c31ab40a62e
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/network/WifiCallingPreferenceControllerTest.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2017 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.settings.network;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+import android.telephony.CarrierConfigManager;
+import android.telephony.TelephonyManager;
+
+import com.android.ims.ImsManager;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Matchers.anyInt;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class WifiCallingPreferenceControllerTest {
+
+    @Mock
+    private Context mContext;
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private CarrierConfigManager mCarrierConfigManager;
+    @Mock
+    private TelephonyManager mTelephonyManager;
+    @Mock
+    private Preference mPreference;
+    private WifiCallingPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        when(mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE))
+                .thenReturn(mCarrierConfigManager);
+        when(mContext.getSystemService(Context.TELEPHONY_SERVICE))
+                .thenReturn(mTelephonyManager);
+        mController = new WifiCallingPreferenceController(mContext);
+    }
+
+    @Test
+    public void isAvailable_platformEnabledAndProvisioned_shouldReturnTrue() {
+        ImsManager.wfcEnabledByPlatform = true;
+        ImsManager.wfcProvisioned = true;
+
+        assertThat(mController.isAvailable()).isTrue();
+    }
+
+    @Test
+    public void updateState_shouldUpdatePreferenceSummary() {
+        mController.updateState(mPreference);
+
+        verify(mPreference).setSummary(anyInt());
+    }
+}