Choo choo sounds driving me crazy
I keep hearing train choo choo sounds coming from my iPhone randomly. I checked all my sound setting and nothing there to indicate a train noise. I tried to check my notifications settings and could not find anything there. I see other people are having this problem, but no one has an answer. I don’t know if this sound is an alert or something. It is driving me crazy. SOMEONE please help
iPad, iOS 10