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Windows Central Question
There are times when I'm using my phone (namely when the screen is on and I set it down) that it starts playing what I can only describe as a ringtone. The tone is like blips with the primary notes being 3 notes apart (as in it starts with a blip in E, then a blip in C, then a blip in E with kind of random smaller blips peppered between). Again, it seems to only happen when I have the phone screen on and unlocked, and I set it down. The moment I set it down, the sound goes off. What is this?