QUOTE(sklchan @ Oct 25 2010, 10:18 PM)
ok lah.. to clear things up, here how the GPS work:
1. let your device at least online ONCE (in every boot) to download the general system health and rough orbits of all GPS satellites (the almanac), if u not online at least once then u will need 15~30 minutes to get this data offline.
2. the satelite publish it timing within 30 secs frame for the precise orbital information (the ephemeris), so make sure u under a clear sky and within 2 minutes u will get a lock
3. DO NOT move when u not in lock
4. tinted car will decrease the satelite signal (sometimes A LOTS)
hope this clear all the confusion lah...

+1
My car N97 = dun work in the car
5800XM = dun work in the car
N95 = dun work in the car
Nokia X6 dun work in the car
Only working is Nokia N900 and Nokia N8
A-GPS ( Assist GPS ) - Speed up lock time by retrieve gps location using data from server (Chargable 10cent per lock)
I-GPS (Integated GPS)- Use internal attenna to get a lock the gps (FREE ) but slow and you can choose to work with A-gps to speed up lock time
Network GPS - Speed up constant lock to satelitte by using data from server ( Chargable up to RM5) per destination.
Bluetooth GPS - You can improve the GPS performance by using 3rd party GPS device but drain the phone battery very fast.
(1) What is GPS?» Click to show Spoiler - click again to hide... «
GPS stands for Global Positioning System. It is a satellite-based navigation system made up of a network of 24 to 36 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day.
(2) Does garmin works and what suitable software available for n900?» Click to show Spoiler - click again to hide... «
Not at the moment. For now Ovi maps and sygic are the best choice
Ovi maps no navigation
Sygic Works but outdated maps tutorial to install are found on the guides section on top
(3) Which setting A-gps,I-gps,network GPS,Bluetooth GPS is suitable for me?» Click to show Spoiler - click again to hide... «
I-gps only
Pros: FREE
Cons: Slow locktime
I-gps + A-gps only
Pros: Faster locktime about 5-10sec to get a lock
Cons: A minor fee apply like 10cent per request to satelitte
I-gps + Network GPS only
Pros: Very stable GPS connection and fast lock time
Cons: Major fee can reach up to RM5 or more per destination
Bluetooth GPS
Pros: Faster locktime and FREE
Cons: Burden of carrying two device and heavy battery drain on device
Wifi GPS
Pros: Free and fast locktime
Cons: Must be within wifi range usually near an indoor place
(4) Alternate a-gps address to speed up locktime» Click to show Spoiler - click again to hide... «
Go to Menu > Setting > Location > Location Server > change it to the following google address

This post has been edited by aspire2oo6: Oct 25 2010, 10:30 PM