The iPhone’s Do Not Disturb feature really is great. It silences your phone on a daily schedule, so you never need to worry about being woken up by a Facebook alert, or some other useless beep. But maybe you want to be disturbed by certain people. Maybe your teenage kids are out late, or your better half is away on a trip. Is there a way to let their calls and texts punch through the Do Not Disturb shield? Well, yes, there is! It’s called Emergency Bypass, and here’s how to enable it.