Apple patented a technology that would block the iPhone’s camera feature. So you wouldn’t be able video or take photos at some concerts. The way it works is that venues will soon be able to use infrared beams to disable your camera.
“When switched on, the patent says, the phone would simply display a “recording disabled” message when audience members attempt to take photographs or videos. Alternatively, a watermark or blur effect may be applied, to discourage people from sharing them.”
There has been many instances where performers stopped their shows because the cell phones became a distraction as you can see below. Patti LuPone Snatches Theatergoer’s Cell Phone Mid-Performance, Says ‘I Am So defeated by This Issue’
HUGH JACKMAN STOPS PLAY WHEN PHONE CALL INTERRUPTS HIM! “If you don’t answer that, I will.”
Adele Scolded a fan for recording her during her performance in Verona, Italy, “Could you stop filming me with that video camera?”