Authors, please please -please- stop trying to drive plot with informational scarcity. It's an outdated concept. It makes even contemporary works feel aged.
What am I calling information scarcity? A contrived absence of information. If your plot isn't possible without disabling somebody's cell phone - your plot isn't applicable anymore. What you are writing is not contemporary, and it certainly isn't sci-fi - it's steampunk. It's somebody else's future.
And good steampunk can be good, don't get me wrong. But you have to -know- that what you're writing is steampunk. You have to -know- that you're writing somebody else's future.
Otherwise it's like watching improv theatre without knowing it's improv. The context is wrong.
*Shrug* Tiny complaint, thrown out into the void.