Ariz. R. Evid. 1008
Rule 1008. Functions of the Court and Jury
Ordinarily, the court determines whether the proponent has fulfilled the factual conditions for admitting other evidence of the content of a writing, recording, or photograph under Rule 1004 or 1005. But in a jury trial, the jury determines--in accordance with Rule 104(b)--any issue about whether: (a) an asserted writing, recording, photograph, or video ever existed; (b) another one produced at the trial or hearing is the original; or (c) other evidence of content accurately reflects the content.