Yes I have had a S6 Edge+ for about a year now and it has make a random notification sound that sounds like a camera shutter to me, but it is the NOT one used for the camera app, I have listened to it and it is a different sound. it did it after I turned my screen off and put it in my pocket, and about 3-4 months ago I remember it making the same sound, and I think it did it before that but I don't remember when.. It does not seem to be a normal thing and I'm not sure what to do it it.. I know the chances of a virus are unlikely on android, so I'm not sure what it is.. By the way there are NO notifications when it does it and the only camera app I have installed is Snapchat, and the time it did it before I did not have Snapchat installed.. Any advice would be appriciated!