Brits, Canadians and everyone does what we tell them do do, look around, read the news and you’ll find out 
And it depends on your expertise level. I am extremely good in driving (alhamdulillah) and I can be on the phone and still pay 95%+ attention to my driving. That’s another that I prefer not to talk but sometimes you have to be on the phone while driving. But I’ve seen people who drive SLOWER because they are on the phone, that’s dangerous and THOSE people shouldn’t be on the phone because they are not focusing on the driving. My speed is not affected by me being on the phone. Again, it’s not something to be proud of but if you can do it, why not 