Just a quick summary of the law around this, people don't realise it's actually quite a narrow definition.
To prove the offence, you must be:
- Driving a motor vehicle on a road or supervising someone who is.
- Using a handheld device for an interactive communication function.
Point 2 is a complicated one. You must hold the device in your hand whilst using the phone for a communication function. If it's sat in a cradle, affixed to the dash, using handsfree or otherwise does not need to be held during the journey, then this law won't be applicable. You also must be using the phone to start/receive a call, text message or any application that uses the internet. That could include Google Maps or another navigation app that uses the internet. If you picked up your phone to use the calculator alone, then this, again wouldn't be applicable to this offence. There is a statutory defence to this being that if you can't stop and need to call 999, you can. Radio use is also exempt.
It's worth noting, that whilst many of my examples would mean that the mobile phone legislation wouldn't' be applicable, it may fall into the offence of not being in proper control of a vehicle or driving without due care and attention, but both of these are generally a £100 fine and 3 points unless tried at court.