> Another comment proposed a theater mode, and maybe that should mean "no noise whatsoever for the next N hours, warn me if it means deferring an alarm". It's

> Another comment proposed a theater mode, and maybe that should mean "no noise whatsoever for the next N hours, warn me if it means deferring an alarm". It's called off. Hold the top button and the home button and you'll get a screen that lets you power off the iphone completely. To turn the phone back on just press and hold the top button for a few seconds. :)