Regulation 366/09 has some exemptions for display screens that are mounted securely:
Requirement that display screens be secure
8. The exemptions in sections 2, 3, 4, 5, 6 and 7 apply only if the display screen of the computer, mobile data terminal or other device is placed securely in or mounted to the motor vehicle so that it does not move while the vehicle is in motion.
Regulations 366/09 also has some exemptions for pressing buttons on handheld devices that are securely mounted or worn:
Exemption for pressing buttons
14. (1) A person may drive a motor vehicle on a highway while pressing a button on a hand-held wireless communication device to make, answer or end a cell phone call or to transmit or receive voice communication on a two-way radio if the device is placed securely in or mounted to the motor vehicle so that it does not move while the vehicle is in motion and the driver can see it at a quick glance and easily reach it without adjusting his or her driving position.
(2) A person may drive a motor vehicle on a highway while pressing a button on a device that is worn on his or her head or hung over or placed inside his or her ear or is attached to his or her clothing and is linked to a hand-held wireless communication device to make, answer or end a cell phone call or to transmit or receive voice communication on a two-way radio or a hand microphone or portable radio.
Also section 78.1(3) of HTA allows hands free operation:
Hands-free mode allowed
(3) Despite subsections (1) and (2), a person may drive a motor vehicle on a highway while using a device described in those subsections in hands-free mode.
Touching a securely mounted phone to make/answer/hangup a voice call is okay, but none of these exemptions allows to actually pickup or hold the device.