diff --git a/src/com/android/settings/network/telephony/DefaultSubscriptionController.java b/src/com/android/settings/network/telephony/DefaultSubscriptionController.java
index 779802a22ac..1d82f659b87 100644
--- a/src/com/android/settings/network/telephony/DefaultSubscriptionController.java
+++ b/src/com/android/settings/network/telephony/DefaultSubscriptionController.java
@@ -34,6 +34,7 @@ import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceScreen;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.settings.R;
 import com.android.settings.network.SubscriptionUtil;
 import com.android.settings.network.SubscriptionsChangeListener;
@@ -64,7 +65,6 @@ public abstract class DefaultSubscriptionController extends TelephonyBasePrefere
     public DefaultSubscriptionController(Context context, String preferenceKey) {
         super(context, preferenceKey);
         mManager = context.getSystemService(SubscriptionManager.class);
-        mTelecomManager = mContext.getSystemService(TelecomManager.class);
         mChangeListener = new SubscriptionsChangeListener(context, this);
     }
 
@@ -184,12 +184,12 @@ public abstract class DefaultSubscriptionController extends TelephonyBasePrefere
      */
     public PhoneAccountHandle getDefaultCallingAccountHandle() {
         final PhoneAccountHandle currentSelectPhoneAccount =
-                mTelecomManager.getUserSelectedOutgoingPhoneAccount();
+                getTelecomManager().getUserSelectedOutgoingPhoneAccount();
         if (currentSelectPhoneAccount == null) {
             return null;
         }
         final List<PhoneAccountHandle> accountHandles =
-                mTelecomManager.getCallCapablePhoneAccounts(false);
+                getTelecomManager().getCallCapablePhoneAccounts(false);
         final PhoneAccountHandle emergencyAccountHandle = new PhoneAccountHandle(
                 PSTN_CONNECTION_SERVICE_COMPONENT, EMERGENCY_ACCOUNT_HANDLE_ID);
         if (currentSelectPhoneAccount.equals(emergencyAccountHandle)) {
@@ -203,14 +203,30 @@ public abstract class DefaultSubscriptionController extends TelephonyBasePrefere
         return null;
     }
 
+    @VisibleForTesting
+    TelecomManager getTelecomManager() {
+        if (mTelecomManager == null) {
+            mTelecomManager = mContext.getSystemService(TelecomManager.class);
+        }
+        return mTelecomManager;
+    }
+
+    @VisibleForTesting
+    PhoneAccount getPhoneAccount(PhoneAccountHandle handle) {
+        return getTelecomManager().getPhoneAccount(handle);
+    }
+
     /**
      * Check if calling account bind to subscription
      *
      * @param handle {@link PhoneAccountHandle} for specific calling account
      */
     public boolean isCallingAccountBindToSubscription(PhoneAccountHandle handle) {
-        return mTelecomManager.getPhoneAccount(handle)
-                .hasCapabilities(PhoneAccount.CAPABILITY_SIM_SUBSCRIPTION);
+        final PhoneAccount account = getPhoneAccount(handle);
+        if (account == null) {
+            return false;
+        }
+        return account.hasCapabilities(PhoneAccount.CAPABILITY_SIM_SUBSCRIPTION);
     }
 
     /**
@@ -220,7 +236,11 @@ public abstract class DefaultSubscriptionController extends TelephonyBasePrefere
      * @return label of calling account
      */
     public CharSequence getLabelFromCallingAccount(PhoneAccountHandle handle) {
-        CharSequence label = mTelecomManager.getPhoneAccount(handle).getLabel();
+        CharSequence label = null;
+        final PhoneAccount account = getPhoneAccount(handle);
+        if (account != null) {
+            label = account.getLabel();
+        }
         if (label != null) {
             label = mContext.getPackageManager().getUserBadgedLabel(label, handle.getUserHandle());
         }
diff --git a/tests/robotests/src/com/android/settings/network/telephony/DefaultSubscriptionControllerTest.java b/tests/robotests/src/com/android/settings/network/telephony/DefaultSubscriptionControllerTest.java
index dbdad505d34..e20241b8b41 100644
--- a/tests/robotests/src/com/android/settings/network/telephony/DefaultSubscriptionControllerTest.java
+++ b/tests/robotests/src/com/android/settings/network/telephony/DefaultSubscriptionControllerTest.java
@@ -21,6 +21,7 @@ import static com.android.settings.core.BasePreferenceController.CONDITIONALLY_U
 
 import static com.google.common.truth.Truth.assertThat;
 
+import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
@@ -32,6 +33,9 @@ import android.content.Context;
 import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
 
+import androidx.preference.ListPreference;
+import androidx.preference.PreferenceScreen;
+
 import com.android.settings.R;
 import com.android.settings.network.SubscriptionUtil;
 
@@ -46,9 +50,6 @@ import org.robolectric.RuntimeEnvironment;
 
 import java.util.Arrays;
 
-import androidx.preference.ListPreference;
-import androidx.preference.PreferenceScreen;
-
 @RunWith(RobolectricTestRunner.class)
 public class DefaultSubscriptionControllerTest {
     @Mock
@@ -91,6 +92,20 @@ public class DefaultSubscriptionControllerTest {
         assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
     }
 
+    @Test
+    public void isCallingAccountBindToSubscription_invalidAccount_withoutCrash() {
+        doReturn(null).when(mController).getPhoneAccount(any());
+
+        mController.isCallingAccountBindToSubscription(null);
+    }
+
+    @Test
+    public void getLabelFromCallingAccount_invalidAccount_emptyString() {
+        doReturn(null).when(mController).getPhoneAccount(any());
+
+        assertThat(mController.getLabelFromCallingAccount(null)).isEqualTo("");
+    }
+
     @Test
     public void displayPreference_twoSubscriptionsSub1Default_correctListPreferenceValues() {
         final SubscriptionInfo sub1 = createMockSub(111, "sub1");