Um, yes. Most people still have a ringtone. Stop trying to be futuristic before the future has happened.
No they don't. Most people have these new fangled phones with a "vibrate" function.
You may not have heard of it, but what it does is that instead of making a noise, the phone kind of shakes in your pocket. So you can tell its ringing without anyone else having to listen to your retarded ringtone.