diff --git a/KidPhone/app/src/main/java/kidtoys/az/kidphone/PhoneActivity.java b/KidPhone/app/src/main/java/kidtoys/az/kidphone/PhoneActivity.java
index 5c0a4a4..71ad815 100644
--- a/KidPhone/app/src/main/java/kidtoys/az/kidphone/PhoneActivity.java
+++ b/KidPhone/app/src/main/java/kidtoys/az/kidphone/PhoneActivity.java
@@ -6,10 +6,7 @@
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
-
-import androidx.appcompat.app.AppCompatActivity;
 import android.util.Log;
-import android.view.Display;
 import android.view.Gravity;
 import android.view.KeyEvent;
 import android.view.View;
@@ -17,6 +14,8 @@
 import android.view.WindowManager;
 import android.widget.LinearLayout;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 
 
 public class PhoneActivity extends AppCompatActivity implements Phone, View.OnClickListener {
@@ -211,12 +210,7 @@ public boolean onKeyDown(int keyCode, KeyEvent event) {
     @Override
     public void onBackPressed() {
         if (mode != null) mode.onSave();
-        this.soundPlayer.playPhoneCloseMode(new SoundCallBack() {
-            @Override
-            public void soundPlayFinished() {
-                PhoneActivity.this.finish();
-            }
-        });
+        this.soundPlayer.playPhoneCloseMode(PhoneActivity.this::finish);
         started = 0;
        // super.onBackPressed();
     }
diff --git a/KidPhone/app/src/main/java/kidtoys/az/kidphone/SoundPlayer.java b/KidPhone/app/src/main/java/kidtoys/az/kidphone/SoundPlayer.java
index 2632c90..212f780 100644
--- a/KidPhone/app/src/main/java/kidtoys/az/kidphone/SoundPlayer.java
+++ b/KidPhone/app/src/main/java/kidtoys/az/kidphone/SoundPlayer.java
@@ -40,12 +40,7 @@ public void PlayMp3(int fileId,final SoundCallBack callback) {
         mediaPlayer = MediaPlayer.create(context, fileId);
         mediaPlayer.start();
         if(callback!=null) {
-            mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
-                @Override
-                public void onCompletion(MediaPlayer mp) {
-                    callback.soundPlayFinished();
-                }
-            });
+            mediaPlayer.setOnCompletionListener(mp -> callback.soundPlayFinished());
         }
     }