Truckies have been using CB radios for decades before the invention of mobile phone.
CB's require one hand to be away from the steering wheel, so logically that is just as dangerous as using a mobile phone.
Then there are the cabbies who play with their booking systems whilst driving.
Cops play with their radios, and phones, and speed cameras, and computer systems while driving.
If they were truly serious about road safety, then there would be a blanket ban on all of them.
Of course, with cops "being better drivers" and "receiving training", then there should be no reason why the same training in use of mobiles whilst driving should not be made available to the general public. But they won't do it, as the training would only give them a on off payment, whereas a ban will be a continuous revenue stream for the greedy twunts.