Cameras have long been banned at PGA tournaments. I know, because I volunteered at one for 4 years. We were to call security if we even saw a camera during the competition. Cameras were only allowed on the practice and pro-am days (Mon - Wed). Once the tournament began, anyone caught with camera had two choices, either let the camera be confiscated (and picked up only when you left the course), or you and the camera could both be escorted off the premises immediately. I'm not sure how they treat the cameras built into cell phones these days, but I'm certain that if a phone rings audibly, it will get the same treatment as cameras do. The only people who are allowed to have cameras on the course during tournament play are legitimate photographers with press passes.