[samtheman]

the power to interrupt people's cellphone conversations

You claim to have read this thread but in fact you have read and understood: nothing.

Repeat after me: on the theater's private property.

Again, with feeling: on the theater's private property.

Nobody is talking about doing anything to you, so quell your vaunting paranoia. It's on the theater's private property that we're discussing here, and that only involves you if you decide to go on the theater's private property.

Try to wrap your mind around the concept. It's doable.

[RFEngineer]

"Try to wrap your mind around the concept. It's doable"

Sam, the theater doesn't own the spectrum it purports to use - its someone else's (the spectrum licensees) property. I'm sure your mind is wrapped around that concept. It is also very likely that the jamming signals will not be limited to the premises of said private property - and that's the other problem.

Theaters can control the problem directly - by refusing to allow patrons with cellphones to enter, or by asking them to leave if they use a cellphone in any way that they deem unacceptable. The rest is just plain manners.