Why do some phones make a sound when you turn them on or off?
Have you noticed that a lot of mobile phones not only play music when you turn them on, but turn them off. This makes no sense at all, especially when the person is shutting it off specifically so they won't disturb people in a quiet room, such as a theater, library, restaurant, or church.
Thankfully, Apple doesn't do this, but there are quite a few phones out there that do it, and it puts people in an awkward position. If they forget to turn off their phone, and enter a quiet room, they have to decide between the guarantee of an awkward sound when they shut them off, or leaving them on and taking a chance that somebody might call.