white noise problem when recording with phone

[Fadi Maz]

Hello;

I have a problem, when I use the phone to record Greeting message, I hear white noise at the end of the message. I used Audacity to remove the silent periode at the end, but I still hear it . I think it is a delay that Kazoo add (sound like noise) at the end of every message. my question is, is there any way to remove this delay?

Regards;