To add a new contact

Open the Contacts application.
Tap the New contact icon to the right of the search box.
If you have more than one account with contacts, select the account where you want to save the contact.

NOTE
To change the account later, edit the entry, tap at the top of the screen, then tap the account you want it assigned to.
Enter the contact’s name.
Tap a category of contact information, such as phone number or email address, to enter that kind of information about your contact.
Tap a category’s Add new icon to add more than one entry for that category. For example, in the phone number category, enter a work number and add a home number. Tap the label field to the right of the entered information to open a drop-down menu of preset labels. For example, HOME or WORK for a phone number.
Tap the Picture frame icon to select a picture to display next to the name in your list of contacts and in other applications.
Tap Add another field at the bottom of the screen to add additional fields including Organization, IM, Notes, Nickname, Website, Events, and Relationship.

NOTE
You can also set the color of the notification LED for the contact.
When you’re finished, tap Save.