@[deleted]
It’s possible. Make sure you have this pull request merged into your code (https://github.com/osTicket/osTicket/pull/3900). Then, all you have to have is a phone field on the Contact Information form with the variable labeled as “phone”. Once you do this, delete the `ost_user__cdata` table, add the numbers to each user via the field, and search for any user so the table is recreated with the new field and data. Once you do this you should be able to search via phone number.
Cheers.