iPhone users can access their favorites list by going to the phone app and tapping the star icon. Spencer Platt/Getty Images Additionally, users can add favorite contacts as an emergency contact.

There is no limit on how many favorite contacts you can make, but to get the most out of the feature, I’d advise keeping your favorites list small. Maybe somewhere between 5 and 10 contacts.

Quickly add and remove stars from your favorite (or least favorite) contacts on the Samsung Galaxy S5 with these few instructions.

This guide explains how to add contacts to your favorites in Viber. Viber can create shortcuts for these favorited contacts, adding them to the top of your contact list for easy calling or messaging.

The favorites list's granular settings allow you to jump into the contacts you only text with, while still accommodating those people you more often speak with on the phone.

Apple’s VIP calling features, including Favorites and the Contacts widget, let you better control how you reach people—and when they can reach you.

Let’s add them to our Favorites. Step 4. Choose which number to set as a Favorite contact. Here, you can see there’s only a single number for Apple to be found in my contacts list.

Given these last three choices, it would seem fair to assume that the only way to let specific contacts get through to you when Do Not Disturb is on, is to add them to your Favorites list.