diff --git a/res/values/config.xml b/res/values/config.xml
index 9b2605d..7e71068 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -290,4 +290,13 @@
          in some devices per modem limitation 5G network can't be connected if two or more SIMs
          are active simultaneously. In that case, this value should be false. -->
     <bool name="config_5g_connection_in_dsds_mode">true</bool>
+
+    <!-- Vibrator pattern to be used as the default for notifications
+         that specify DEFAULT_VIBRATE. -->
+    <integer-array name="config_defaultNotificationVibePattern">
+        <item>0</item>
+        <item>350</item>
+        <item>250</item>
+        <item>350</item>
+    </integer-array>
 </resources>
diff --git a/src/com/android/phone/PhoneUtils.java b/src/com/android/phone/PhoneUtils.java
index c567806..8eaa336 100644
--- a/src/com/android/phone/PhoneUtils.java
+++ b/src/com/android/phone/PhoneUtils.java
@@ -22,16 +22,22 @@
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
+import android.content.res.Resources;
+import android.media.AudioAttributes;
+import android.media.AudioManager;
+import android.media.MediaPlayer;
+import android.media.RingtoneManager;
 import android.net.Uri;
 import android.os.Handler;
 import android.os.Message;
 import android.os.PersistableBundle;
+import android.os.VibrationEffect;
+import android.os.Vibrator;
 import android.telecom.PhoneAccount;
 import android.telecom.PhoneAccountHandle;
 import android.telecom.VideoProfile;
 import android.telephony.CarrierConfigManager;
 import android.telephony.PhoneNumberUtils;
-import com.android.telephony.Rlog;
 import android.telephony.SubscriptionManager;
 import android.text.TextUtils;
 import android.util.Log;
@@ -53,7 +59,9 @@
 import com.android.internal.telephony.PhoneFactory;
 import com.android.internal.telephony.TelephonyCapabilities;
 import com.android.phone.settings.SuppServicesUiUtil;
+import com.android.telephony.Rlog;
 
+import java.io.IOException;
 import java.util.List;
 
 /**
@@ -79,6 +87,9 @@
     /** Define for not a special CNAP string */
     private static final int CNAP_SPECIAL_CASE_NO = -1;
 
+    /** Define for default vibrate pattern if res cannot be found */
+    private static final long[] DEFAULT_VIBRATE_PATTERN = {0, 250, 250, 250};
+
     /**
      * Theme to use for dialogs displayed by utility methods in this class. This is needed
      * because these dialogs are displayed using the application context, which does not resolve
@@ -499,9 +510,59 @@
                 newDialog.getButton(DialogInterface.BUTTON_NEGATIVE)
                         .setTextColor(context.getResources().getColor(R.color.dialer_theme_color));
             }
+
+            if (mmiCode.isNetworkInitiatedUssd()) {
+                playSound(context);
+            }
         }
     }
 
+    private static void playSound(Context context) {
+        AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+        int callsRingerMode = audioManager.getRingerMode();
+
+        if (callsRingerMode == AudioManager.RINGER_MODE_NORMAL) {
+            log("playSound : RINGER_MODE_NORMAL");
+            try {
+                Uri notificationUri = RingtoneManager.getDefaultUri(
+                        RingtoneManager.TYPE_NOTIFICATION);
+                MediaPlayer mediaPlayer = new MediaPlayer();
+                mediaPlayer.setDataSource(context, notificationUri);
+                AudioAttributes aa = new AudioAttributes.Builder()
+                        .setLegacyStreamType(AudioManager.STREAM_NOTIFICATION)
+                        .setUsage(AudioAttributes.USAGE_NOTIFICATION)
+                        .build();
+                mediaPlayer.setAudioAttributes(aa);
+                mediaPlayer.setLooping(false);
+                mediaPlayer.prepare();
+                mediaPlayer.start();
+            } catch (IOException e) {
+                log("playSound exception : " + e);
+            }
+        } else if (callsRingerMode == AudioManager.RINGER_MODE_VIBRATE) {
+            log("playSound : RINGER_MODE_VIBRATE");
+            Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
+            // Use NotificationManagerService#DEFAULT_VIBRATE_PATTERN if
+            // R.array.config_defaultNotificationVibePattern is not defined.
+            long[] pattern = getLongArray(context.getResources(),
+                    R.array.config_defaultNotificationVibePattern, DEFAULT_VIBRATE_PATTERN);
+            vibrator.vibrate(VibrationEffect.createWaveform(pattern, -1));
+        }
+    }
+
+    private static long[] getLongArray(Resources r, int resid, long[] def) {
+        int[] ar = r.getIntArray(resid);
+        if (ar == null) {
+            return def;
+        }
+        final int len = ar.length;
+        long[] out = new long[len];
+        for (int i = 0; i < len; i++) {
+            out[i] = ar[i];
+        }
+        return out;
+    }
+
     /**
      * It displays the message dialog for user about the mmi code result message.
      *