[Lord of Fire]

Originally Posted by monster

I would sometimes gets a call from someone I know (who uses an iPhone), but when I answer the phone, I would hear mumbled voices. It turns out that someone is talking to someone else, but somehow I would be on the line even though I can't talk/listen to them, but just hear their voices.

Is this a known phone/smartphone/iPhone issue or is it a user issue where the person presses the wrong menu (or whatever may be the case) when trying to call someone else?

That, or they forget to lock their phone and your number gets accidentally dialed when the keys get pressed. It's a very common source of our national alarm number being called without there being an emergency. Happens to me frequently as well.