Question:

An external link is defined in the Hyperlink Formula Field. How can a link be opened in Safari when the user is clicking the link on an iRep record?

Answer:

To make Hyperlink Formula Field uses Safari for an external website, the URL has to specify http(s).

Example:

HYPERLINK("safari:http://www.veeva.com", "Veeva", "_blank")

Related Documentation:

CRM Help Documentation: N/A