To add a contact to your phone press the contacts button, as seen below. This will take you to the contacts page.
If you don't have any personal contacts press the softkey add, as pictured below.
If you have already have personal contacts added then press the softkey more once will make the softkey add option appear. Press the softkey add to bring up the screens to add a contact in.
Entered the required details for the new contact. The system will not allow you to add a contact without both a name and a number. Once you are done press the softkey done which is the left one.
Note: When entering letters you will need to press the button multiple times to get the other letters displayed on the button. Capitals and symbols can be selected via the second Soft key
You will now have a contact within your contacts.
It is important to note that Corporate contacts won't appear in your personal contacts unless you add them in. For information on how to do this please refer to this article: How to add a Corporate contact to personal contacts