I just think it’s picking nits, and while you know you were only glancing at the phone to check the signal and that was no more dangerous than adjusting the AC/heating or radio, the fact is a lot (a majority? are there studies?) of people glancing at a phone will end up doing much more engaging activities. Had the signal been bad, or even good on your phone and bad on your car’s bluetooth display, what would you have done? You would have been thinking about it, fiddling with options perhaps, and eventually the light would have turned green and if the problem wasn’t yet resolved, hypothetical you begins to drive while thinking about this and trying to fix it, and that is an unsafe situation.
Someone glancing at a text or email message will be tempted to reply to said message, if only to say “I’m in the car”. Doing so requires a certain amount of focus and often takes more time than we think it does, especially when we are trying to drive as well.
I’m too lazy to check to see what type of phone you have (if you even said it) but I’m assuming an iPhone (which is what I think you had for some reason) would require at least a click of the “power” button or double-click of the main control button, and a slide on the screen to unlock it and maybe minimizing an app that might be open before you can really see what signal it is receiving (I’m basing this on my knowledge of the iPod Touch). If the light had immediately turned green, would you have absolutely stopped what you were doing, or continue “just checking” it?
You don’t have to answer those specifically - I believe you that you were not particularly putting anyone at risk and had no intention of making a call/texting, but the police officer couldn’t know that, and for so many other people, that’s what they would say in order to get out of a ticket regardless of their intent.
Countless people drive and use a cell phone (to any extent of the definition you want to use for the word “use”, “operate”, “capable”, whatever), and nothing bad happens, but the accidents that occur in which cell phone use was a significant factor are a) frequent and b) severe enough that a law is warranted.
You probably drive safely enough to not use a seatbelt either. But not everyone does, and what if? These laws are written to get everyone into compliance, not just the crazy fuckers likely to actually kill someone via their actions. Sorry it caught up to you, but IMHO you were breaking the law as it was written. Perhaps the wording could be different, but it’s a law that I support (at least in theory).