After the contacts application is open, you will have three ways to add a contact:
Import contacts from your SIM card.
Import contacts from Facebook.
Manually add a new contact.
If you wish to import contacts from either your SIM or Facebook, tap on the settings icon inside the Contacts app (top right hand corner).
On the resulting screen either tap Import from SIM or Enable Facebook.
If you tap on Enable Facebook a new screen will open and direct you to the Facebook login screen. After you have been authenticated, you are returned to the Contacts app and presented with a screen similar to the following:
This screen allows you to import all your Facebook contacts or, only a select few.
Add A New Contact
If you wish to add a new contact manually, tap on the plus icon, next to settings.
The Add contact screen appears.
Enter a name, number, image and other relevant info. To save your new contact tap the Done button, in the top right.
The contact list appears with the new contact and image, if selected.
Tip: Select a contact's name, then tap the phone or message icon to call or send that contact a message.
Tip: To update your imported contacts, tap the setting icon
in the upper-right of the Contacts app, then tap Update imported friends.