The call you can't miss: How to bypass 'Do Not Disturb' on iPhones

If you want to remain reachable for certain contacts even in "Do Not Disturb" mode, you can easily set this up on the iPhone via a somewhat hidden function. — Christin Klose/dpa

It's good practice to turn your phone on "Do Not Disturb" mode during important meetings. But of course, there are some people – a spouse, a sick relative – whom you'll make an exception for.

iPhones let you easily have it both ways with a hidden feature in the "Settings". Open the iPhone's "Contacts" app and select the person you don't wish to ignore, advises German speciality magazine Mac&i.