diff --git a/app/src/main/java/com/example/notifyservice/MainActivity.java b/app/src/main/java/com/example/notifyservice/MainActivity.java
index acf7e10..6ce192a 100644
--- a/app/src/main/java/com/example/notifyservice/MainActivity.java
+++ b/app/src/main/java/com/example/notifyservice/MainActivity.java
@@ -375,6 +375,7 @@ public class MainActivity extends AppCompatActivity implements PostRequestCallba
     }
 
     private void requestPhone(Context context, PhoneNumber phone){
+        currentHash = "";
         Log.i("a", "22"); // STATIC
         PostRequest postRequestTask = new PostRequest(context, this);
         postRequestTask.execute("phone",