[janitha]

Originally Posted by Technocrat

Praful the doubt is how does one know? Most of the phones which do triangulation & that I know of, do not mention AGPS or any such thing yet can show one's location on gmaps.

Now we have phones like Nokia 5230 which mentions AGPS & so far most of us are under impression that it has GPS.

So can Nokia 5230 users confirm if their phone is only AGPS or A+GPS?

Both GPS and AGPS. Interestingly, at times mine gets even 5 to 6 satellites even inside the double storied concrete residence.

[IronWolf]

Can someone please summarize a list the best freeware Indian Nuvi Map Downloads?

GMAPSUPP.IMG

List
Summarize
Rate
Link

Thanks

[ruchirtnt]

look and feel of MMI products are not as per the expectation, may be MIO or garmin can be tried upon.

[ruchirtnt]

even the MMI is not very keen in selling Garmin, they are more inclined to sell MMI products only and if i recall there are many people who have reviews of bad product experience, in that case MIO will be a good option from Satguide

[nairrk]

Originally Posted by ruchirtnt

look and feel of MMI products are not as per the expectation, may be MIO or garmin can be tried upon.

+
On what basis you have decided that MMI products are not as per the expectation? Have you seen any complaints from those who already own and using MMI Navigator?
I am very eager to know the reason because I own MMI navigator

[ruchirtnt]

Originally Posted by nairrk

+
On what basis you have decided that MMI products are not as per the expectation? Have you seen any complaints from those who already own and using MMI Navigator?

its only my personal choice, i could not find the device very enchanting,
that is why thought of some more google till i find the device of my choice.

[trrk]

Hi,

Originally Posted by nairrk

+
I am very eager to know the reason because I own MMI navigator

For the basic function as a navigator, the MMI has been doing a great job with me. Of course, I can think of umpteen points which could have made the usage more pleasurable, but it works.

The recent trip to Guruvayoor it did beautifully. I knew the different routes through Trichur town. The moment I took the short cut (at least it avoids the Round), it recalculated and showed me the route as I wanted it.

It does miss out on some 'one ways' elsewhere!

[ruchirtnt]

Originally Posted by trrk

It does miss out on some 'one ways' elsewhere!

that is what my feeling is also, it misses out on bluetooth, video play quality but for GPS it is quite good, but i am buying it for other purposes as well

[nairrk]

Originally Posted by trrk

Hi,



For the basic function as a navigator, the MMI has been doing a great job with me. Of course, I can think of umpteen points which could have made the usage more pleasurable, but it works.

The recent trip to Guruvayoor it did beautifully. I knew the different routes through Trichur town. The moment I took the short cut (at least it avoids the Round), it recalculated and showed me the route as I wanted it.

It does miss out on some 'one ways' elsewhere!

+
Yes, It may not be able to read some one ways or diversions which the locap traffic cops introduce time to time (not a permanant routing).
It helped me too when I drove to Chennai and back (via mysore-Bangalore). What I most liked on this one was, if a particular right turn or left turn closed for traffic and made it as one way, then the device immediately give another direction which also accurate and connect to the road where I wanted to go.
I am using this device only for navigation and very well satisfied!

[nairrk]

Originally Posted by ruchirtnt

that is what my feeling is also, it misses out on bluetooth, video play quality but for GPS it is quite good, but i am buying it for other purposes as well

+

Temporarily introduced one way or traffic diversions may not be able to read by any Navigator?

However, incase you miss a route due to such sudden changes, the navigator recaculate and give you another route to reach your required destination.

I have not yet used the bluetooth facility or video play or any other functions available on the Device.

[ruchirtnt]

MapmyIndia Navigator RoadPilot : With India's best maps and driving directions | Turn-by-turn directions | Travel across India

a much cost effective version of GPS launched by MMI at 7990

[nairrk]

Originally Posted by ruchirtnt

MapmyIndia Navigator RoadPilot : With India's best maps and driving directions | Turn-by-turn directions | Travel across India

a much cost effective version of GPS launched by MMI at 7990

+
They have another new model ZX150 Deluxe, which has got more functions/features like Bluetooth connectivity, video play, AV in which can be connected to reverse camera etc etc? Something similar to your requirement??

[adnaps]

Originally Posted by ampere

That brings us back to the original question.
What is the difference between GPS and A-GPS in a layman's term?

A GPS device works by traingulating its position with reference to minimum of four satellites. Initially when the device is switched on , the device searches for the satellites in its field of view and therefter locks onto the the most appropriate ones. This process of searching and locking may take approximately 5 minutes. GPS users may have noticed that a GPS device locks on very quickly if one swiches it on at the same position where it was switched off. This is because the device does not have to do a search as it already knows the poistion of satellites within the viewing range.

A-GPS : Assisted GPS- The A-GPS device is a GPS device with phone capability. The device begins by sending the cell phone tower ID to a central server (supl.nokia.com in case of nokia). The server from its database sends back to the phone/GPS device, the details of satellites expected to be within the viewing horizon. Using this information the device locks onto the GPS very quickly, in about 1 minute. To communicate with the server , a internet connection i.e GPRS is essential. Therefore a A-GPS device needs to have GPRS as well as as GPS capability.

Positioning based on cellphone tower ID : Certain mapping software like Google maps, use the cell phone tower ID to detect the approximate position of the phone. The more the number of towers within range the more accurate will be the position. However this positioning system can never be as accurate as a GPS. Once while travelling on a train in Orissa, the location was varying from UK, tejpur & Andhra (on a BSNL connection). I suspect that the cell phone tower ID's on BSNL networks are not unique.

[salbin]

Originally Posted by ruchirtnt

MapmyIndia Navigator RoadPilot : With India's best maps and driving directions | Turn-by-turn directions | Travel across India

a much cost effective version of GPS launched by MMI at 7990

Definitely this is a cost effective product.
If anybody useing MMI products, please share the experience.
How is the processing speed?
Does it take too much time for searching?

[ampere]

Originally Posted by adnaps

A GPS device works by traingulating its position with reference to minimum of four satellites. Initially when the device is switched on , the device searches for the satellites in its field of view and therefter locks onto the the most appropriate ones. This process of searching and locking may take approximately 5 minutes. GPS users may have noticed that a GPS device locks on very quickly if one swiches it on at the same position where it was switched off. This is because the device does not have to do a search as it already knows the poistion of satellites within the viewing range.

A-GPS : Assisted GPS- The A-GPS device is a GPS device with phone capability. The device begins by sending the cell phone tower ID to a central server (supl.nokia.com in case of nokia). The server from its database sends back to the phone/GPS device, the details of satellites expected to be within the viewing horizon. Using this information the device locks onto the GPS very quickly, in about 1 minute. To communicate with the server , a internet connection i.e GPRS is essential. Therefore a A-GPS device needs to have GPRS as well as as GPS capability.

Positioning based on cellphone tower ID : Certain mapping software like Google maps, use the cell phone tower ID to detect the approximate position of the phone. The more the number of towers within range the more accurate will be the position. However this positioning system can never be as accurate as a GPS. Once while travelling on a train in Orissa, the location was varying from UK, tejpur & Andhra (on a BSNL connection). I suspect that the cell phone tower ID's on BSNL networks are not unique.

Adnaps, Praful,

Thanks for that clarification. So then which are phones which that come with true GPS. All the Nokia phones that I have seen talk about only A-GPS. That means, if is on a Trek and there no tower in site, the phone GPS (A-GPS) will not work. I hoped that at least in that mode, the A-GPS transforms into a true GPS and waits for the satellites rather than routing through the cell tower. The AGPS in my opinion also should have an independent GPS mode.