GPS Lag with Sprint Nav on Touch Pro

[aceracer24]

Originally Posted by mike99

Well,

I did more experimenting.

Using google maps, I set the GPS management to manual under options. I set COM4 port and tried all baud rates. As the rate went up, the lag decreased. At the rate of 0 (last option down the list), the lag was minimal at 65mph using bridges as points of reference.

Then I went back to TeleNav, and there was no difference. Lag was as bad as before. I opened google maps again, and again the lag was minimal, position detection was more accurate, and my seetings have not changed (still was on manual).

I was wandering if those setting changes applied to google maps only and if there was a way to make them apply to all GPS based programs???

I did notice that downloaded data soared from 100-200 kb at 4800 baud rate to 2000kb at 0.

Any comments or thoughts?

Thanks

Google maps is the only software i have used that lets you manually set the com AND set baud. Live Search allows manual com setting. I have found that for me anyway, both apps seem to work better when manually set to com 4. Might just be my imagination though. As for different baud rates and the GPS lag with google maps, I will have to look into this.

[mike99]

So I have been chatting with HTC CS. Here is our conversation.

Hello,

Thank you for your inquiry about your Sprint Touch Pro.



We understand it is important for your device to function as expected. If redownloading the signal did not resolve the GPS lag, then you would need to contact Sprint for further assistance. HTC cannot offer extensive troubleshooting for the carrier's GPS application.

As for the speaker issue, if the volume is turned up all the way, then we cannot make it go any louder. This device has been designed around the carrier's specifications. We apologize for any inconveniences this may cause you.


I hope we have answered your question in detail. Feel free to contact us again if you have any further questions.

HTC Technical Support
http://www.america.htc.com
http://www.htcwiki.com




Hello William, Thank you so much for a very prompt reply. I really appreciate that. Unfortunately, the QuickGPS trick did not work. I tried it with both devices, as recommended, prior to the first use of GPS based program, and then tried to update it every day. Still no luck. The GPS fix is very quick, within several seconds, with multiple satellites, but the significant lag is still there. And what about the speakerphone issue?Again, thank you very much for your help.Sincerely,--- On Fri, 1/23/09, William C <info@htc.com> wrote:From: William C <info@htc.com>Subject: Re: GPS Lag <<#4428-58761#>>To: Date: Friday, January 23, 2009, 3:53 PM#yiv1854970603 p {margin-bottom:0;margin-top:0;}Hello Vlad, Thank you for your inquiry regarding the GPS lag and speaker volume on your HTC Touch Pro device from Sprint. We understand that it is important you receive all the information to best utilize your device. We recommend you open the QuickGPS program to download ephemeris data (current satellite position and timing information) to your device. This data is needed to determine the GPS position of your current location. To open QuickGPS, tap Start > Programs > QuickGPS and tap "Download" on the QuickGPS screen. You will initially see onscreen the Valid time for the downloaded data. This will continue to update until the time runs out. To speed up GPS positioning, download the latest ephemeris data when the validity of the data expires. You can locate further information regarding QuickGPS in your device's User Manual. The HTC Technical Support Center is unable to hear and compare the volume of your speakerphone to that of other HTC Touch Pro devices. We respectfully recommend you contact your carrier for such a comparison. I hope we have answered your question in detail, Vlad. Feel free to contact us again if you have any further questions. HTC Technical Support http://www.america.htc.com http://www.htcwiki.com --- Original Message ---From: <ContactUs@htc.com>Received: 1/23/09 3:01:04 PM ESTTo: <info@htc.com>Subject: ContactUs NoticeDear,<Please note that the above message was sent from an automatic e-mail account. Please do not reply to this email directly.>We have received a new question by end user from www.htc.com at [ 2009/01/24 03:58:40 ] with the following details. Hello, I am in the US on Sprint network. I have a Touch Pro phone with two persistent problems. 1. There is a marked lag using GPS. I use Live search, google maps, and Sprint TeleNav. All of them suffer from the same problem: the position of my car on the map lags 200-250 feet behind my actual real time position. This makes navigation software almost unusable. I talked to Sprint representatives and was told this is not the software issue. I used same applications on other phones (Blackberry curve and HTC Mogul from Sprint) and never experienced these problems. 2. The speakerphone volume is very low at max settins, and cannot be used for conversations except in the completely noise-free environment. I did try both soft and hard resets, and even exchanged my phone. My latest build date is 12/24/08. However, both models have similar problems, and this is very frustrating. Touch Pro is an expensive high-end phone, and these two functions are very important to me. Is there anything you can suggest?Sincerely, Maybe more people should complain, and they actually realize that they cannot get away with this ***p.

[gorillaguzzler]

I have tried every trick that has been talked about and I have not been able to improve the lag on my phone no matter what I do. this is the last unresolved issue I have on my phone (well right now anyway) and it is driving me crazy. I wish some smart person out there would figure it out.

[mike99]

I will forward my communication with HTC to Sprint. See what they say. Like I said, if more people complain, call, and send e-mails to Sprint and HTC, maybe someone will do something about it.

[mike99]

I did write to HTC. Here is our conversation:

Hello, I am in the US on Sprint network. I have a Touch Pro
> phone with two persistent problems.

1. There is a marked lag
> using GPS. I use Live search, google maps, and Sprint
> TeleNav. All of them suffer from the same problem: the
> position of my car on the map lags 200-250 feet behind my
> actual real time position. This makes navigation software
> almost unusable. I talked to Sprint representatives and was
> told this is not the software issue. I used same
> applications on other phones (Blackberry curve and HTC Mogul
> from Sprint) and never experienced these problems.

2. The
> speakerphone volume is very low at max settins, and cannot
> be used for conversations except in the completely
> noise-free environment. I did try both soft and hard resets,
> and even exchanged my phone. My latest build date is
> 12/24/08. However, both models have similar problems, and
> this is very frustrating. Touch Pro is an expensive high-end
> phone, and these two functions are very important
> to me.

Is there anything you can suggest?


Thank you for your inquiry regarding the GPS lag and
> speaker volume on your HTC Touch Pro device from Sprint.
>
> We understand that it is important you receive all the
> information to best utilize your device.
>
> We recommend you open the QuickGPS program to download
> ephemeris data (current satellite position and timing
> information) to your device. This data is needed to
> determine the GPS position of your current location.
>
> To open QuickGPS, tap Start > Programs > QuickGPS and
> tap "Download" on the QuickGPS screen.
> You will initially see onscreen the Valid time for the
> downloaded data. This will continue to update until the
> time runs out. To speed up GPS positioning, download the
> latest ephemeris data when the validity of the data expires.
>
>
> You can locate further information regarding QuickGPS in
> your device's User Manual.
>
> The HTC Technical Support Center is unable to hear and
> compare the volume of your speakerphone to that of other HTC
> Touch Pro devices. We respectfully recommend you contact
> your carrier for such a comparison.
>
> I hope we have answered your question in detail.
> Feel free to contact us again if you have any further
> questions.

Hello William,
> Thank you so much for a very prompt reply. I really
> appreciate that. Unfortunately, the QuickGPS trick did not
> work. I tried it with both devices, as recommended, prior to
> the first use of GPS based program, and then tried to update
> it every day. Still no luck. The GPS fix is very quick,
> within several seconds, with multiple satellites, but the
> significant lag is still there.
> And what about the speakerphone issue?


We understand it is important for your device to function
> as expected. If redownloading the signal did not resolve the
> GPS lag, then you would need to contact Sprint for further
> assistance. HTC cannot offer extensive troubleshooting for
> the carrier's GPS application.
>
>
>
> As for the speaker issue, if the volume is turned up all
> the way, then we cannot make it go any louder. This device
> has been designed around the carrier's specifications.
> We apologize for any inconveniences this may cause you.

[inmnbob]

I never really noticed the lag until the forum raised the issues. I did compare the position/lag today to my car GPS and found that my car and ths sprint GPS had very similar positioning. Where the lag occurred was in the spoken voice directions on the Sprint. It was a second or two late. If I watch the screen I am okay but if I listen to the voice I could miss a turn.

Maybe some of you smarter than me can have an answer.

[prophetizer]

it's not accurate either, driving downtown chicago, it thinks i'm on a street a block over, so using it is pointless

[inmnbob]

NOw that's crazy because I live downtown and don't have that problem. Just tested it this morning and it found my street fine. I have a 10/16 build date

[prophetizer]

well, when i'm driving down lasalle for instance, it thinks i'm 2 streets west, it prompts me for what street i'm on, i select it, then it shows me off to the side with the red line. very strange. my build date is 10/14 i think

[kyle4269]

I'm about a street behind and 5 MPHs off with Garmin Mobile XT. I've also tried all the tweaks I can find to fix this. Still no luck.