diff --git a/src/com/android/providers/telephony/CarrierProvider.java b/src/com/android/providers/telephony/CarrierProvider.java
index a13c7e3..a4b6ea0 100644
--- a/src/com/android/providers/telephony/CarrierProvider.java
+++ b/src/com/android/providers/telephony/CarrierProvider.java
@@ -90,7 +90,17 @@
 
     @Override
     public int delete(Uri uri, String selection, String[] selectionArgs) {
-        throw new UnsupportedOperationException("Cannot delete URL: " + uri);
+        if (VDBG) {
+            Log.d(TAG, "delete:"
+                    + " uri=" + uri
+                    + " selection={" + selection + "}"
+                    + " selection=" + selection
+                    + " selectionArgs=" + Arrays.toString(selectionArgs));
+        }
+        final int count = getWritableDatabase().delete(CarrierDatabaseHelper.CARRIER_KEY_TABLE,
+                selection, selectionArgs);
+        Log.d(TAG, "  delete.count=" + count);
+        return count;
     }
 
     @Override
diff --git a/tests/src/com/android/providers/telephony/CarrierProviderTest.java b/tests/src/com/android/providers/telephony/CarrierProviderTest.java
index b0b9b09..5146aa9 100644
--- a/tests/src/com/android/providers/telephony/CarrierProviderTest.java
+++ b/tests/src/com/android/providers/telephony/CarrierProviderTest.java
@@ -288,4 +288,38 @@
             Log.d(TAG, "Error inserting certificates:: " + e);
         }
     }
+
+    /**
+     * Test delete.
+     */
+    @Test
+    @SmallTest
+    public void testDelete() {
+        int numRowsDeleted = -1;
+        ContentValues contentValues = new ContentValues();
+        contentValues.put(CarrierDatabaseHelper.KEY_TYPE, dummy_type);
+        contentValues.put(CarrierDatabaseHelper.MCC, dummy_mcc);
+        contentValues.put(CarrierDatabaseHelper.MNC, dummy_mnc);
+        contentValues.put(CarrierDatabaseHelper.MVNO_TYPE, dummy_mvno_type);
+        contentValues.put(CarrierDatabaseHelper.MVNO_MATCH_DATA, dummy_mvno_match_data);
+        contentValues.put(CarrierDatabaseHelper.KEY_IDENTIFIER, dummy_key_identifier_data);
+        contentValues.put(CarrierDatabaseHelper.PUBLIC_KEY, dummy_key1.getBytes());
+        contentValues.put(CarrierDatabaseHelper.EXPIRATION_TIME, dummy_key_expiration);
+
+        try {
+            mContentResolver.insert(CarrierProvider.CONTENT_URI, contentValues);
+        } catch (Exception e) {
+            Log.d(TAG, "Error inserting certificates:" + e);
+        }
+
+        try {
+            String whereClause = "mcc=? and mnc=?";
+            String[] whereArgs = new String[] { dummy_mcc, dummy_mnc };
+            numRowsDeleted = mContentResolver.delete(CarrierProvider.CONTENT_URI, whereClause, whereArgs);
+        } catch (Exception e) {
+            Log.d(TAG, "Error updating values:" + e);
+        }
+        assertEquals(numRowsDeleted, 1);
+    }
+
 }