Default Sero 7 Pro random beep

Hey there, I'm new to the android scene having the sero 7 pro being my first android device. I bought it about a week ago and rooted it, but now it keeps randomly beeping. The beep sounds like the beep when you raise the volume but sometimes I'm not even touching the tablet when it happens. I feel like its got something to do with an app connecting to the internet because this beeping only starts when I'm near my house or school's WiFi network. I am on the stock ROM and on 4.2.1. Can anyone shed some light on this?


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