Voted no, but the selectable reason for my no wasn't listed.
I voted no because I have no faith in a police officer's ability to determine an exact time of crash and therefore be able to say, without a doubt, that a device was actually in use by the driver in the moments leading up to the event.
I mean, how much leeway are they going to give? 1 minute? 10? And what if you received a call/text/email/whatever but didn't respond? Is that still potential jail time? Not everyone knows how to look at a phone and determine which side of the conversation the owner of the device was on. Seems silly, but is absolutely true.
What if siri was somehow activated (easily done) and started to respond to your voice thinking that you wanted to text the misses or call the office?
Heck, what if it's *your* phone but someone else in the car was using it? I know I often have my kids text/call my wife or look things up using my phone in the car. I doubt an officer is going to make that distinction.
So, no. Not only no, but hell no.