Your iPhone gives you four ways to dial a phone number and make a call:
Keypad Lets you dial a number directly
Contacts Lets you search for a name stored in the Contacts program so you can dial the saved phone number for that person
Recents Tracks the phone numbers of people who have called you so you can return their calls
Favorites Lets you select names of people you call frequently from the Contacts program
The most straightforward way to dial a number is to use the keypad to type the phone number one digit at a time. To dial a number with the keypad, do this:
From the Home screen, tap Phone. The Phone screen appears.
Tap Keypad at the bottom of the screen. The numeric keypad appears, as shown ...