The A-GPS seams to have worked for me.

I've been traveling to various points between London and Manchester over the last few days and have consistently always got a lock within a maximum of say 1 minute or so (sometimes much quicker). Even when doing 70MPH on the motorway before switching Wayfinder on. Prior to this, it typically took several minutes and sometimes took 5 to 10+ minutes when moving at speed on occasions.

To answer someones earlier question about how often it connects to "refresh" when location has not changed. during the 5 days or so of using it (at least on 3 or 4 days, probably started Wayfinder at least a dozen+ times including playing around) after the initial update it only tried connecting for an update the once. so it is not "every time" that's for sure. and you can "usually" still expect a fast connection even if the mobile is not available.

That's my experience of it anyway.

Now could someone give an idea of the amount of data it needs to fetch as well ?
I too am curious as to what the cost of using it abroad would be...

Zuber