This is very important and I hope people read it carefully. There are already threads started all over this forum with people wanting to know which scanner app and where to find it. One can only hope such a thread doesn't get closed or moved to some remote part of this forum where nobody will ever read it. If there's one thing I've noticed about the sub forums is that they get very little traffic and most questions and issues posted there are never addressed. Something I noticed is that the op used copy and paste to put the whole news story on here instead of posting a link to the story.
Okay, lets say you are a paramedic in small town Kansas and you have permission to monitor local frequencies, you could still get in trouble using you phone and apps in Dallas, Texas. I also live in a small town, rural community where we have an all volunteer fire department and they get paged out for fire and rescue calls. Normally pagers and portable scanners are only carried when in and around the comunnity serviced. Pagers/radios don't normally go out of town, but cell phones are with you all the time and could be considered a mobile scanner in some states which is illegal.
Sadly, a mod will come along and this thread will be moved to who knows where and lost forever. We don't even get told where these threads are moved to, the're just gone.