If you’ve ever tried to tiptoe into your bedroom late at night without waking up your spouse, you’ve probably cringed when you’ve had to plug in your iPhone, only to hear it chirp or buzz as it vibrates to acknowledge the charging connection. Fortunately, it turns out there’s a handy, albeit it less than obvious way to prevent this: For whatever reason it turns out that if you simply swipe to the camera from your lock screen before plugging your iPhone in, it will not emit any sound or vibration at all. The Camera app will stay open, of course, but you can easily return to the normal lock screen once your iPhone is plugged in by pressing the home button. [via iPhone in Canada / Business Insider]