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> Do I want a G900 or an iPhone?
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@makbil:well, the A-GPS is actually a corrector of GPS, unless the operator and Apple decided the other way around.It's like this: A-GPS is better if Apple and the operator decided that when you have no network ,you can use the GPS chip as regular GPS, or they can cut you out and if you don't have a network signal the GPS won't work at all.
Regarding the unlimited data plans, that's true IF they allow you to use the GPS as it is-see above. The ones buying the Iphone will have to tell us how it is.
Personally, I incline to the 2 nd variant because Iphone has NO maps except for Goggle Maps that you can ONLY use thru A-GPS. You can't install aditional maps cuz no one made it, so I guess you're stuck with Google Maps (which are, as Makbil says, very rough) and that's all. That's a damn shame.
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Posted: 2008-07-18 09:36:22
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I haven't been out of cellular coverage yet so I have no idea which type of a-gps it has, but from what I've read, the GPS works fine regardless of network coverage. in fact although I'm aware of the type you're mentioning, I haven't yet heard of any operating implementing such a restriction
Google maps in the iphone first uses a-gps to get a rough position, but then it uses the built in gps to get more accurate positioning.
When its using a-gps you get a circle around the area you are in but when the GPS gets a fix you see a blue flashing dot which moves as you move, so its not dependant on a-gps... a-gps just assists in getting a quicker position while the GPS is taking its time to gets its fix
using google maps you can get directions and as your position moves off the map, the map scrolls so that your position stays visible
the only thing you don't get with google maps is turn by turn routing or voice prompting
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Posted: 2008-07-18 09:49:59
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@701, what I'm saying is that A-GPS gets your position based on the operator's cell tower (perhaps even some triangulation, I'm not so sure), so there is no way that you can have the position accurate enough for navigation by using A-GPS alone. That is why only a built-in A-GPS doesn't mean too much for me, you need a GPS.
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Posted: 2008-07-18 09:53:40
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agreed. there's definitly no way you can hope to navigate with a-gps alone. even in london where cell towers are more dense the circle that shows the a-gps location covers quite a few blocks. out of London I've seen the a-gps circle cover half a mile radius or more!
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Posted: 2008-07-18 09:56:35
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A-GPS as a standalone navigation system does not exist. It is an additional feature of a device which has a hardware gps and is nothing but a piece of software. Some (or most) of the gps phones nowadays have it, while others don't.
The N95, for instance, got the a-gps feature later on through a fw update (v.20 if I remember well).
As for the rough estimation of your position (based on the data of your network) and indication of the same in Google Maps, this can be done on any mobile phone, with or without GPS.
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Posted: 2008-07-18 10:33:31
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On 2008-07-18 09:56:35, masseur wrote:
...out of London I've seen the a-gps circle cover half a mile radius or more!
Google maps quite often shows the centre of my location across water ~ 4 miles away
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Posted: 2008-07-18 14:39:19
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is there any free navigation program for UIQ3 so far??
_________________
download PSP Stuff here[ This Message was edited by: whatsucka on 2008-07-19 05:43 ]
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Posted: 2008-07-19 06:39:57
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Get an iphone. Better hardware, better software, multi-touch, advanced OS with exceptional UI and tons of cool, useful apps. On top of that u still get the best portable media player in the market with 16gb of memory.
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Posted: 2008-07-19 07:21:08
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I just got the iPhone 3G urgraded from the original one. One the old one you could use google maps and it could the you a rough possition of where you were but in central London for example it was maybe a 500 meter radius. The new one, with the gps looks exactly on to my possition, and it's really fast, within about 5 seconds it had my possition. For walking around it's perfect, much better than the n95 I used to have. And it's costs nothing. Not experianced problems of disconecion.
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Posted: 2008-07-19 09:17:44
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Argh! I was getting all convinced to go for the G900 and not the iPhone and now I'm all confused again!
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Posted: 2008-07-19 14:38:34
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