Audiences and mobiles

Dear fellow audience members !
do you HAVE to be connected to the outside world via your phone every single moment of the day ?!!
Please !
A reminder -

Listen to the announcements and make sure your phone is turned off when you have taken your seat in the auditorium
Do NOT turn your phone back on and use it in the middle of the performance!

a - it is rude to the performers
b- it is distracting to those around you
c - and most importantly perhaps - one of the main reasons theatres make the announcement about not using your phone is it can interfere with the technical production side of the show and bring the performance to a grinding halt !

There are also the copyright issues of recording / photographing the set design etc

I have noticed that recently this situation is getting worse and worse.