Are Extension Staff eligible for cell phone reimbursement, or is it just for Faculty?

Yes, staff are eligible for this privilege, but it's not a hard-and-fast rule that staff HAVE to be provided this benefit.  It really depends on the role the staff member is in and what they're expected to do.  Below is a Cell Phone Best Practice guide to assist in determining who may need to have this benefit.  And here's a link to the UA's policy on Technology Allowances.