You can search first, last, and company names in your contacts on iPhone. If you have a Microsoft Exchange account set up on iPhone, you may also be able to search your enterprise Global Address List (GAL) for contacts in your organization. If you have an LDAP account set up on iPhone, you can search contacts on your organization’s LDAP server.
When you enter search information, contacts with matching information appear immediately as you start to type.
In Contacts, tap the search field at the top of any list of contacts and enter a first, last, or company name. (To scroll quickly to the top of the list, tap the status bar.)
Tap Groups, tap Directories at the bottom of the list, then enter a first, last, or company name.
You can’t edit GAL contacts or save them to iPhone.
Tap Groups, tap the LDAP server name, then enter a first, last, or company name.
You can’t edit LDAP contacts or save them to iPhone.