For about two months I am experiencing this problem: at some point during the conversation (whether rang , either call someone ) I hear a voice echo or other person. So far I blamed bad connection or signal , but do not think that is the case , though. Besides echoing sounds kind of "click " before it disappears sometimes hear someone else talking in the background or even music. Usually , side echo lasts no more than 10-20 seconds . I have a Samsung Galaxy Young S5360 . I would like to know if I should worry or not ( I am think of the classic ' phone listening ' ' , yet I don't want to be paranoid ) and what can I do in this case .