Use the list views to alter which columns are shown in the list for the existing contact records. Select the word 'default' in the top left corner to see the available views.
The contact name is shown in all the views. The standard views add extra columns such as:
Default - the view shown each time you open contact list with the company type and parent contact name.
Address - the street address line 1 and 2, suburb / town, state, post code and country.
Phone and Email - the business phone, mobile, and email addresses.
Tags and Roles - the tags and roles that have been assigned to the contacts.