As of now -- there's NO talking or texting while driving in Ontario.
You can't email, or use portable video games or D-V-D players while behind the wheel, either.
G-P-S systems are allowed, as long as they're secured to the dashboard -- and there is an exception for making 9-1-1 calls.
Police will be using their discretion for the first three months-- but after that the tickets will be expensive.