diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 0e909a6..1b968a9 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -120,6 +120,7 @@
 
 import com.android.ims.ImsManager;
 import com.android.ims.internal.IImsServiceFeatureCallback;
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.telephony.CallForwardInfo;
 import com.android.internal.telephony.CallManager;
 import com.android.internal.telephony.CallStateException;
@@ -1617,7 +1618,8 @@
     }
 
     /** Private constructor; @see init() */
-    private PhoneInterfaceManager(PhoneGlobals app) {
+    @VisibleForTesting
+    /* package */ PhoneInterfaceManager(PhoneGlobals app) {
         mApp = app;
         mCM = PhoneGlobals.getInstance().mCM;
         mImsResolver = PhoneGlobals.getInstance().getImsResolver();
@@ -7446,6 +7448,15 @@
 
     @Override
     public List<UiccCardInfo> getUiccCardsInfo(String callingPackage) {
+        try {
+            PackageManager pm = mApp.getPackageManager();
+            if (Binder.getCallingUid() != pm.getPackageUid(callingPackage, 0)) {
+                throw new SecurityException("Calling package " + callingPackage + " does not match "
+                        + "calling UID");
+            }
+        } catch (PackageManager.NameNotFoundException e) {
+            throw new SecurityException("Invalid calling package. e=" + e);
+        }
         boolean hasReadPermission = false;
         try {
             enforceReadPrivilegedPermission("getUiccCardsInfo");
diff --git a/tests/src/com/android/phone/PhoneInterfaceManagerTest.java b/tests/src/com/android/phone/PhoneInterfaceManagerTest.java
new file mode 100644
index 0000000..9f8de9e
--- /dev/null
+++ b/tests/src/com/android/phone/PhoneInterfaceManagerTest.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2020 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.phone;
+
+import static junit.framework.TestCase.fail;
+
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+
+import android.content.pm.PackageManager;
+import android.os.Binder;
+import android.util.Log;
+
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.TelephonyTestBase;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+
+@RunWith(AndroidJUnit4.class)
+public class PhoneInterfaceManagerTest extends TelephonyTestBase {
+
+    private static final String PRIVILEGED_PACKAGE_NAME = "test.package.name";
+
+    private static final String TAG = "PhoneInterfaceManagerTest";
+
+    private PhoneInterfaceManager mPhoneInterfaceManager;
+    private PhoneGlobals mMockPhoneGlobals;
+
+    @Before
+    public void setUp() throws Exception {
+        super.setUp();
+        mMockPhoneGlobals = mock(PhoneGlobals.class);
+        //PhoneGlobals phoneGlobals = new PhoneGlobals(mContext);
+        mPhoneInterfaceManager = new PhoneInterfaceManager(mMockPhoneGlobals);
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        super.tearDown();
+    }
+
+    @Test
+    public void testGetUiccCardsInfoSecurity() {
+        // Set up mocks so that the supplied package UID does not equal the calling UID
+        PackageManager mockPackageManager = mock(PackageManager.class);
+        try {
+            doReturn(Binder.getCallingUid() + 1).when(mockPackageManager)
+                    .getPackageUid(eq(PRIVILEGED_PACKAGE_NAME), anyInt());
+        } catch (Exception e) {
+            Log.d(TAG, "testGetUiccCardsInfoSecurity unable to setup mocks");
+            fail();
+        }
+        doReturn(mockPackageManager).when(mContext).getPackageManager();
+        doReturn(mockPackageManager).when(mMockPhoneGlobals).getPackageManager();
+        try {
+            mPhoneInterfaceManager.getUiccCardsInfo(PRIVILEGED_PACKAGE_NAME);
+            fail();
+        } catch (SecurityException e) {
+            Log.d(TAG, "testGetUiccCardsInfoSecurity e = " + e);
+        }
+    }
+}