You're only allowed to use a distracting device in similar circumstances as you are allowed to be drunk. Arguing with an officer that you are parked by the side of the road is not sufficient if for example you have the engine on. In some circumstances just sitting in the driver's seat while in possession of the keys and drunk is enough for a conviction.
I also use google maps on my phone as a sat nav (audio only is plenty effective to get me places). Again, this is somehow dangerous and illegal to be using but the same behaviour with an actual sat nav, which in my experience is far more labourious to set a destination on, is fine.
I am, of course, aware of the law (I'm in the UK). However in this case the law is an ass. "Driving without due care and attention" properly covers every eventuality.
I wonder if this law will sit around ad infinitum whilst we ignore the ever more complicated computers sat on the centre console just as (if not more) distracting than a phone...
Even if you aren't holding it in your hand of looking away from the road, but are significantly distracted, you can be prosecuted under the "Driving without due care attention" law as you state.
Correct. However it is illegal to use a phone without being distracted dangerously, whilst using a satnav without being distracted dangerously is perfectly safe.
The Driving without due care and attention is a perfect catch all for dealing with bad driving behaviour. You can be done for eating crisps as easily as using a sat nav. The specific "using a mobile phone whilst behind the wheel of a car is 6 points on your license + a fine" is completely disproportionate in terms of what behaviours it implicitly approves (such as using sat nav safely whilst not moving) and the burden of proof (requiring the user to be "unsafe").
The reality is that policemen (of whom there are simply not enough) have discretion and a bit of common sense most of the time and use the tools at their disposal to punish people for driving badly whilst using their phone. This is good. I fundamentally disagree with singling out unsafe mobile phone use in law, however.
Are you not allowed to use Maps for navigation too?
I really have no idea why anyone would want to navigate by looking at a moving map display. If you know where you're going, you're far better off to keep your eyes on the road and use the voice prompts to get there. If you don't know where you're going - well, that's a bigger problem, and one that no navigation system will solve.
This morning, as I dropped my daughter off at school, some woman pulled off from the side of the road and drove about 30 yards before bothering to look up to see if there were any kids crossing.