- Button Grecian
- Posts: 2957
- Joined: Mon Dec 26, 2005 10:44 pm
- Real Name: Katharine Dobson
- Location: Gwynedd
While in town, the map showed my location very precisely, but now I have come home it shows me floating out in Cardigan Bay! We have Wifi at home, and it is set up for that. John tried to help and started entering our postcode, just the first half, there is now an annoying red pin in the map over in the next valley. So my questions are why am I floating in Cardigan Bay, and how do I remove the red pin, please.
Don't worry about the world coming to an end today. It's already tomorrow in Australia!
- Button Grecian
- Posts: 2221
- Joined: Wed Aug 08, 2007 5:36 pm
- Real Name: Jo Sidebottom
- Location: Milton Keynes
Not much help really, I'm afraid
- GE (Great Erasmus)
- Posts: 147
- Joined: Thu Mar 10, 2011 12:38 pm
- Real Name: John Wexler
- Location: Edinburgh
Apologies in advance for geekery, but ...Jo wrote:I haven't got an iphone but my impression is that GPS on phones generally is not as accurate as satnav.
GPS on phones is every bit as accurate as satnav, but only when it's working. Phones have several ways of finding out where you are. If they can't use GPS, they'll try one of the others, and that will be less accurate - sometimes much less accurate.
Satnavs are generally in situations where GPS can work well - in the open air, with a clear view of plenty of sky so that they get signal direct from at least four satellites. Phones, on the other hand, are often in places where GPS can't work, such as indoors.
So, for a lot of the time, your phone has only a vague idea of where you are. But if you go outside and let the GPS work, it'll be accurate to within a few metres.
Col A 1954-62