A new feature rumored to be in the next iOS update called Theater Mode could dim smartphone usage in cinemas.
Intimate Technology

Put Your Phone on Theatre Mode in Cinemas

We all know how annoying it gets to sit next to a person in the theatre who is continuously using the phone. But according to Sonny Dickson, things are about to change. The Australian famed “Apple leaker”, who notably reveals accurate information when it comes to new tech, wrote: “iOS 10.3 to feature a new Theatre mode”. The initial update is scheduled for January 10th and has many users speculating on screen level brightness and the disabling of notifications. If the function will be truly launched, it will be a matter of days. Until then, we can just switch our phone off.

Source: The Guardian