Another way to deal with this is to comment on their smartphone perhaps saying something like "Oh is that the new iPhone? Can I have a look" then ask them to un

Another way to deal with this is to comment on their smartphone perhaps saying something like "Oh is that the new iPhone? Can I have a look" then ask them to unlock it. If they do so turn the phone away from them and start clicking on random apps or the settings and take a photos of the screen.