PDFWAC 260-72-050
Use of personal communication devices on the grounds.
(1) The use of personal communication devices is not allowed by any licensee, except with prior approval or in the case of an emergency, in the jockey's quarters thirty minutes prior to the first live race and until the final live race on the card is official.
(2) No licensee shall use a personal communication device while on horseback on the racing surface, during live racing, except with permission of the board of stewards.
(3) The use of audible personal communication devices shall be prohibited in the saddling enclosure of the paddock, the receiving barn, and test barn when horses are present. These devices are permitted, but when carried in these areas these devices shall be turned off or set to a silent mode.