James |
08-04-2011 08:26 PM |
Quote:
Originally Posted by st albans
Doesn't it need 3G to track where you are?
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The iPhone (and the iPad 3g) uses Assisted GPS. This means that it utilises both the signals from the geostationary satellites as well as information from 3g transmitters locally - which helps the iPhone to 'lock in' accurately and quickly.
However, like most car GPS systems, it works fine without 3g (or WiFi) provided the Application has its own map store. The TomTom does. So you can switch off 3g and wiFi, and it will get you to wherever you need to go, just by using GPS.
Quote:
Originally Posted by pauldrulez
How big is the download size?
I've got about 2.5MB free?
Does Western Europe have updates?
How good is the quality of the Western Europe one in terms of the UK?
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The Download size is just under 2 gigs, so you should be OK.
Yes, there are plenty of map updates. This is done without having to re-download the entire programme. Small revisions happen all the time. You can also upload corrections if you find a closed road (for example).
I can't compare to the UK Version, as I have the Western Europe one - but I believe it uses exactly the same maps (but over an extended area).
Edit: I see you said you have 2.5 MB free (not GB), so no - of course you will not have enough space. Sorry!
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