diff --git a/src/com/android/settings/AirplaneModeEnabler.java b/src/com/android/settings/AirplaneModeEnabler.java
index f1d36f2..a843a04 100644
--- a/src/com/android/settings/AirplaneModeEnabler.java
+++ b/src/com/android/settings/AirplaneModeEnabler.java
@@ -26,6 +26,8 @@
 import android.telephony.TelephonyManager;
 import android.util.Log;
 
+import androidx.annotation.VisibleForTesting;
+
 import com.android.settings.network.GlobalSettingsChangeListener;
 import com.android.settings.network.ProxySubscriptionManager;
 import com.android.settings.overlay.FeatureFactory;
@@ -57,8 +59,8 @@
     }
 
     private TelephonyManager mTelephonyManager;
-    private ProxySubscriptionManager mProxySubscriptionMgr;
-    private PhoneStateListener mPhoneStateListener;
+    @VisibleForTesting
+    PhoneStateListener mPhoneStateListener;
 
     private GlobalSettingsChangeListener mAirplaneModeObserver;
 
@@ -70,7 +72,6 @@
         mOnAirplaneModeChangedListener = listener;
 
         mTelephonyManager = context.getSystemService(TelephonyManager.class);
-        mProxySubscriptionMgr = ProxySubscriptionManager.getInstance(context);
 
         mPhoneStateListener = new PhoneStateListener() {
             @Override
@@ -143,7 +144,7 @@
             return true;
         }
         final List<SubscriptionInfo> subInfoList =
-                mProxySubscriptionMgr.getActiveSubscriptionsInfo();
+                ProxySubscriptionManager.getInstance(mContext).getActiveSubscriptionsInfo();
         if (subInfoList == null) {
             return false;
         }
diff --git a/tests/robotests/src/com/android/settings/AirplaneModeEnablerTest.java b/tests/robotests/src/com/android/settings/AirplaneModeEnablerTest.java
new file mode 100644
index 0000000..24abac9
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/AirplaneModeEnablerTest.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2019 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;
+
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+import android.content.Context;
+import android.telephony.TelephonyManager;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.shadows.ShadowSettings;
+
+
+@RunWith(AndroidJUnit4.class)
+public final class AirplaneModeEnablerTest {
+
+    private Context mContext;
+
+    @Mock
+    private AirplaneModeChangedListener mAirplaneModeChangedListener;
+    private AirplaneModeEnabler mAirplaneModeEnabler;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = RuntimeEnvironment.application.getBaseContext();
+        mAirplaneModeEnabler = new AirplaneModeEnabler(mContext,
+                mAirplaneModeChangedListener);
+    }
+
+    @Test
+    public void onRadioPowerStateChanged_beenInvoke_invokeOnAirplaneModeChanged() {
+        mAirplaneModeEnabler.resume();
+
+        ShadowSettings.setAirplaneMode(true);
+
+        mAirplaneModeEnabler.mPhoneStateListener.onRadioPowerStateChanged(
+                TelephonyManager.RADIO_POWER_OFF);
+
+        verify(mAirplaneModeChangedListener, times(1)).onAirplaneModeChanged(true);
+    }
+
+    private class AirplaneModeChangedListener
+            implements AirplaneModeEnabler.OnAirplaneModeChangedListener {
+        public void onAirplaneModeChanged(boolean isAirplaneModeOn) {}
+    }
+}