Samsung Galaxy S4 User Manual page 129

Marking a Contact as Default
When you use applications such as the Voice Dialer or other
messaging type applications, the application needs to know which
information is primary (or default) in a contact entry list. For
example, when you say "Call John Smith", if you have three phone
records for John Smith, the Voice dialer is looking for the "default"
number or entry.
The Mark as default option marks one entry in a contact record to
use as the default. This comes in handy when you have multiple
entries for the same person.
1. From the Home screen, tap
2. Tap a Contact entry.
3. Press
screen displays radio buttons next to each filed.
4. Tap the radio button next to the entry information you want to
be the primary information (such as name, phone number, or
email) and tap Done.
and then tap Mark as default. The Mark as default
(Contacts).
Contacts 121