Use Contacts from the Phone app on iPhone

In the Phone app on iPhone, you can call contacts and add recent callers to the Contacts app .

Add a Favorite

Put VIP contacts in your Favorites list for quick dialing.

Select a contact, then scroll down and tap Add to Favorites.

Calls from these contacts bypass Do Not Disturb (see Set Do Not Disturb on iPhone).

Save the number you just dialed

In the Phone app , tap Keypad, enter a number, then tap Add Number.
Tap Create New Contact, or Add to Existing Contact, then select a contact.

Add a recent caller to Contacts

In the Phone app , tap Recents, then tap next to the number.
Tap Create New Contact, or Add to Existing Contact, then select a contact.

Automate dialing an extension or passcode

If the number you’re calling requires dialing an extension, iPhone can enter it for you. When editing a contact’s phone number, tap , then do any of the following:

Tap Pause to enter a two-second pause (a two-second pause is represented as a comma in the phone number).
Tap Wait to stop dialing until you tap Dial again (wait-to-dial is represented as a semicolon in the phone number).

A phone number with a comma, indicating a two-second pause between digits, and a semicolon, indicating that it should stop dialing until you tap Dial again.

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iPhone User Guide

Use Contacts from the Phone app on iPhone

Add a Favorite

Save the number you just dialed

Add a recent caller to Contacts

Automate dialing an extension or passcode