The Keypad
The last way to place a call is to tap Keypad at the bottom of the screen. The standard iPhone dialing pad appears. It's just like the number pad on a normal cellphone, except that the "keys" are much bigger and you can't feel them.
To make a call, tap out the numbers—use the 
key to backspace if you make a mistake—and then tap the green Call button.
You can also use the keypad to enter a phone number into your Contacts list, thanks to the little 
icon in the corner. See Adding a Contact on the Fly for details.
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