[Sutripta]

Originally Posted by ampere

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.

Pls. go through my post (#1274). (and lots of similar ones from others) AGPS will revert to GPS in absence of the A part. I don't see the reason for this continuing confusion.

Originally Posted by adnaps

...
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.

I do think the satellite constellation seen changes with time, even from the same location.

Regards
Sutripta

[adnaps]

Originally Posted by ampere

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.

@Ampere
An A-GPS phone will still lock on to GPS but may take a few more minutes to lock on, in the abscence of a cell network. There is nothing called as a true GPS. Consider a A-GPS device as an improvement on a normal consumer type GPS device, but will still perform as an ordinary GPS in the abscence of Cell network.


@Sutripta,
You are right, if the GPS is switched ON at the same location after a long period of time ( 4-6 Hours ), an immidiate lock on may not be achieved, as the relative position of the satellites in view would have changed.Thanks for correcting

[ampere]

@Sutripta,

Thanks. I missed this post. There was a post earlier (dont remember which one) that mentioned, an A-GPS will not lock, if you dont have a cell-signal. That is why this confusion. This settles it for all. I was planning to procure a good GPS and WLAN phone. Hearing all this got me confused about the AGPS. Thanks once again.

[ruchirtnt]

Originally Posted by nairrk

+
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??

I had a hands on experience on that also, it looks quite average,
and now i am utter confused about my below findings:

1. MMI Road Pilot cost only 7990 but limited only to GPS at 3.5" Screen
2. MMI LX130 cost 11990 but can do GPS and video play both at 3.5" screen
3. MMI VX140 cost 14990 capable of GPS and video play (bluetooth as well) at 3.5" screen
4. SATGUIDE MOOV 560 at 15590 capable of GPS, Video play and bluetooth at 4.7" screen but doubtful of mapping capability of Satguide

So, utter confused, Please suggest as i do not want to buy any Garmin and any such device from some outsite and end up getting no warranty and NO RISK Work.

[nairrk]

@ruchir
As you suggested in the other thread, if you are not happy with the other features available on the above high end models, then better go for MMI Road pilot which is dedicated only for GPS service. ? (so you are saving about Rs.7000?)

And for Bluetooth,video play etc, you try some other gadgets?

[triedeverything]

Originally Posted by adnaps

@Ampere
An A-GPS phone will still lock on to GPS but may take a few more minutes to lock on, in the abscence of a cell network. There is nothing called as a true GPS. Consider a A-GPS device as an improvement on a normal consumer type GPS device, but will still perform as an ordinary GPS in the abscence of Cell network.

I'm not sure how true this is. I have an N 97 which has A-GPS. Since I am not on a data plan (no GPRS), navigation has not worked for me. I've tried turning off the 'assisted' part of the GPS. Though over 4 satellites are detected, the device doesn't show my true location on a map.

[adnaps]

Originally Posted by triedeverything

I'm not sure how true this is. I have an N 97 which has A-GPS. Since I am not on a data plan (no GPRS), navigation has not worked for me. I've tried turning off the 'assisted' part of the GPS. Though over 4 satellites are detected, the device doesn't show my true location on a map.

Please do not mix up GPS and mapping. GPS just gives you the current position defined by its coordinates. You can see your current coordinates by using GPS-> GPS data -> position from the menu. In case you do not have GPRS, you may have to purchase either satguide or MMI maps (Not sure if they have them available for N97 now). If you just want to check , you could also download google maps or MGMAPS mobile on a wifi network. However the maps will be usable only when you are in wifi range and will not work on the road.

[ruchirtnt]

Originally Posted by nairrk

@ruchir
As you suggested in the other thread, if you are not happy with the other features available on the above high end models, then better go for MMI Road pilot which is dedicated only for GPS service.

can also go for LX130 which can give some pleasure of video play as well.

[nairrk]

Originally Posted by ruchirtnt

can also go for LX130 which can give some pleasure of video play as well.

+
But actually, when you are on the wheel, how can you enjoy video or any other entertainment features than concentrating on driving (ofcourse you can listen music but watching video or any other similar activity means, your diverting your concentration?)

[shamanth]

Originally Posted by nairrk

+
But actually, when you are on the wheel, how can you enjoy video or any other entertainment features than concentrating on driving (ofcourse you can listen music but watching video or any other similar activity means, your diverting your concentration?)

Yes its not good to watch video while driving, should be useful for co-passenger or when someone else is driving on trip.

[ruchirtnt]

Originally Posted by nairrk

+
But actually, when you are on the wheel, how can you enjoy video or any other entertainment features than concentrating on driving (ofcourse you can listen music but watching video or any other similar activity means, your diverting your concentration?)

yes it is, i am thinking for other passengers.

Originally Posted by shamanth

Yes its not good to watch video while driving, should be useful for co-passenger or when someone else is driving on trip.

and moreover i just thought when i am in city (90% of the time) it will become boring to have the same routes view repeatedly, then in that case i can take some other benefits as well and for that VX140 and LX130 both can serve purpose but VX140 has a bigger screen and your experience of video quality is good,
does the video clarity good in daytime as well

[phamilyman]

@tried - tried Garmin mobile?

[ampere]

Originally Posted by triedeverything

I'm not sure how true this is. I have an N 97 which has A-GPS. Since I am not on a data plan (no GPRS), navigation has not worked for me. I've tried turning off the 'assisted' part of the GPS. Though over 4 satellites are detected, the device doesn't show my true location on a map.

That is a problem. According to what others say, without a GPRS, if you have downloaded Nokia maps on to your cell phone, it should work. If it does not, then experts have an explanation to make !!

[Technocrat]

Thanks a lot folks for clearing the air over AGPS.

My understanding from an earlier discussion was same as has been confirmed again.

This confusion started when someone stated that AGPS may not have a proper GPS receiver.

[adnaps]

Originally Posted by ampere

That is a problem. According to what others say, without a GPRS, if you have downloaded Nokia maps on to your cell phone, it should work. If it does not, then experts have an explanation to make !!

To my knowledge Nokia Maps, requires a network connection to activate and startup. Therefore it may not work without GPRS. Satguide & MMI have products which do not require a network and will work without GPRS.
Nokia Map users on the forum please confirm if the above is correct.