On Thu, 24 Jul 2014 15:30:14 +1000, "Rod Speed" wrote:

Unlikely to be for many. You don't need to have a mobile
phone service for the entire trip, JUST when you start the
navigation. It will carry on fine once the navigation has
started and the mobile service drops out for a while.

You arent likely to be starting a nav outside mobile
coverage very often and you would normally be able
to just wait till you get into mobile coverage again
before starting a new nav in the unusual situation
where that happens.

Trying to use sat nav on a phone when all you can see on the screen is a marker
representing your vehicle, surrounded by nothing, not even a road might be
acceptable to some when you know there is only one road for tens or hundreds of
miles around but in some areas of rural UK it simply doesn't work. Where road
signs can be sparse or non existent either a map (1:25000) +compass+dead
reckoning, pre-cached maps on the phone or sat nav are *essential* for those not
familiar with the area.


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