On 23/07/2014 17:33, Tim Watts wrote:
On 23/07/14 14:58, John Williamson wrote:
On 23/07/2014 13:46, wrote:
Hi All,

I may be doing a fiar bit of driving in unfamiliar territory soon and
could do with using the iphone (4) as a satnav on occasion. Is there
a free or cheap app which is more efficient in terms of data usage
than the standard offering from Apple (Which I presume downloads maps
as you use them, if I could use an app where preload Surrey maps and
it then just had to work out where it was and where it was going, I
presume that would use less data (i'm a long way off "All you can eat").

TIA

Try playing with the satnavs in PC World, and find out whose interface
you prefer. Most of them do a few versions that will work on most makes
of mobile phones including Apples, and as the maps are all preloaded,
they use no data while you're travelling, unless you've got traffic
warnings enabled.

I've found the best satnav on Android is CoPilot. Do they do a version
for iPhone?

I would argue that Sygic is better, for a start it is much easier to
store the maps on a memory card.

With regard to the OP, I suspect that most of the power is needed to
power the screen, and would be the same regardless of what GPS app is
being used.

I run my Android phone from a cigarette lighter socket with high output
charger. The last car I hired had two such sockets. It turned out that
only one of them was 12v.


--
Michael Chare