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"It is their business, should they not have the right to ban cell phone signals into the business they own? If people do not want to go into theaters without their cell phones let them stay away. Let the people who want to go to movies without the constant interruption of the ringing of phones go in peace."

What's interesting is that a theater currently under construction could easily be built to block all cell phone signals passively.

A faraday cage is a room surrounded by metal mesh which is grounded. Depending on the size of the mesh, signals of almost any frequency can simply be grounded out, both incoming and outgoing.

For cell phones, a mesh of about 1/4" would do the trick. Simply imbed the mesh behind whatever wall surface you use in the theater rooms, themselves, connect it all together and ground the whole thing to the ground supplied by the electric service. Bingo...a cell-phone blocking faraday cage. No signals in or out.

Such passive blocking is perfectly legal. Only active blocking or jamming is prohibited by law.

What's interesting is that a theater currently under construction could easily be built to block all cell phone signals passively.

I was waiting for someone to point this out. The last building I worked in was a faraday cage with no windows and serpentine entrance/exit halls.....

That's interesting. My husband and I built our house and we built it to last. Sometimes our cell phones can't find service and we have to go outside to use them. The same thing happens with portable phones. I can walk to certain areas of the house and get better reception. Sprint doesn't know why. I wonder if it was something we did while building.