To wish parents in cinema would turn off their mobiles?

[LightsOnNotIn]

Went with son to see Thomas Tank Engine film recently. Parents had turned their phone to silent, thankfully, but the darkness of the cinema was studded with smartphones showing Facebook, etc. Can't these parents turn them off for an hour and show their children that they are (pretending to be) interested in the film?

Yabu.

It's bad form.

YANBU, it is annoying and shows no regard for other cinema users. As for the emergency lighting as mentioned by pixie, my very easy going cinema obsessed DH has been known to complain about the brightness levels on many occasions. (There is also an unspoken agreement that we will not eat popcorn in his presence at the cinema).
I have just shown him this thread and he has shown me this offering from Disney. I will spare you his thoughts on it.