As of September 1, 2015 if convicted, you could face a fine of $400-$1000, and three demerit points applied to your driving record. If you are a newer driver you could even get a 90 day suspension.
Earpieces, headsets and Bluetooth devices are allowed on voice activate dialling. You can activate a hands-free function only if the device is mounted and secured. This extends to GPS devices as well.