It started about two days ago. It randomly beeps every two to three minutes. Sometimes it beeps more frequently, sometimes not so much. It has no pattern. I recently downloaded the reddit app and turbo vpn, so I thought maybe its got something to do with them but It's doing this even in safe mode, so that means it has nothing to do with the apps I've downloaded. Also there is no notification in the notification bar nor is there any indication like a flickering light or anything, only this beep sound. I've had this phone for some months now. This thing started I think two days ago.