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Hello!
I'm just back from a trip from london. I brought with me my P4000 thinking that I would be able to use it's great GPS abroad.
It never worked once.
I thought this thing had an aGPS chip, meaning it was a true GPS that could be assisted by cell towers to find a fix faster. So, my understanding was that it should have worked abroad, albeit slower to find a fix then here.
As soon as I got back home, it started working again.
Any ideas?
Mod Edit: Moved from Titan Upgrading
Thanks!
Hello!
I'm just back from a trip from london. I brought with me my P4000 thinking that I would be able to use it's great GPS abroad.
It never worked once.
I thought this thing had an aGPS chip, meaning it was a true GPS that could be assisted by cell towers to find a fix faster. So, my understanding was that it should have worked abroad, albeit slower to find a fix then here.
As soon as I got back home, it started working again.
Any ideas?
Thanks!
Click to expand...
Click to collapse
If you were roaming overseas, then you won't be inside Verizon's firewall, therefore you won't have connectivity to the PDE server. The standalone GPS should have still worked, though it probably would take a lot longer to fix due to the fact you moved a great deal since the last fix. Did you try to use QuickGPS to download the ephemeris data? That probably would have sped up your fix a little.
I'm using tomtom, so, I don't need access to verizon. Anyway, I'm with Telus.
I've let it stand by the window for hours and it never got a lock. I didn't try QuickGPS.
Should I have switched something in the registry to have it work in standalone mode instead of assisted?
Well, i'm living in Republic Of Moldova. WE have no aGPS here at all, but i still can use GPS function on Titan. I have to wait about 1-3 minutes for lock.
I have installed DCD 3.2.6 rom and 3.42.50 Radio. Use SeaSGEE to download ephemeris data and Navitel Navigator. But Tom Tom and any other programs work fine too.
PS Sorry for my English.
I recall having a similar discussion in an earlier thread.
See if any of this info helps:
http://forum.xda-developers.com/showthread.php?p=2538917
If you do that right, i'm pretty sure it won't even attempt to connect to a PDE server (when u change GPSMode), so you should be able to get a *slightly* quicker lock, as it won't waste time looking for that server.
I do also suggest using some other tool like QuickGPS to retrieve the ephemeris data before trying to get a lock; it *should* speed it up, but I don't know how true that really holds.
Ok,
Thanks for all the infos. I'm going to Madrid next month, I'll try again there.
I was able to get GPS locks all over Europe no problem this past July.
I'm using tomtom, so, I don't need access to verizon. Anyway, I'm with Telus.
Click to expand...
Click to collapse
Well it doesn't matter whether you have Verizon or Telus when it comes to aGPS. I was referring to aGPS. If you aren't inside your carriers internal network, then you won't access the PDE.
The GPS should still work regardless, just in standalone mode, which is why I asked if you tried QuickGPS to try and speed up the lock times.
I was under the impression that there is a registry setting for the global "zone" for our GPSr to look for and that it was set to US.
From the posts I reviewed few if any folks have been able to lock overseas unless they got locks while traveling
GC, have you found any settings in the registry for this?
In QuickGPS I think the setting is as follows:
[HKLM] - Software\HTC\QuickGPS\region
Its set for US for me here in TN and I think someone from Holland posted on PPCGeeks a long time ago NL worked for him to get a lock once he found and got it via trial and error...
I am sure you are onto something here
I think you guys are really onto something here. I have had the most frustrating time with my titan because of this very issue. I travel outside of the USA frequently and in all my travels have only managed to get a lock once! All through Australia and Thailand with no phone signal I was unable to get a lock with either flight mode on or phone mode on. Even in Taiwan where VZW has some modicum of representation (i.e the phone function worked but zero data) I go no lock.
gc was right about the agps thing. Outside of Verizon network you will not get assisted gps (although strangely when in "extended area" roaming inside USA it still seems to work).
in the end i tried a hundred things to get a lock including leaving the phone out in the full view of the sky for 6 hours. Nothing worked except the gps mode that scrawnyb talked about. I finally got a (very slow) lock after what seemed like hours.
I really believe that osteo's answer about the zone (i.e. "US" here in USA) is also part of the answer. I can only assume that the ephemeris data has to be relative to where you are on the earths surface, so the phone having some idea of where you are surely would help (especially without cell tower help from agps).
Targitai, if you visit this thread again can you please check the setting in your phone to see what zone setting you have that assists with locking. You need to look in [HKLM] - Software\HTC\QuickGPS\region and check that you are not set to "US" or similar.
I wont be traveling OS for a few months now, so I cannot confirm any of the above. I hope others who are traveling see this thread and can report back.
Thanks for the helpful info on this thread. This problem has been bugging me for months. Strange this is that my bluetooth gps never takes more than about 2-3 minutes to get a lock, even after crossing to the other side of the earth, over 9000 miles to Australia.
Well,
I'm here in Madrid now and it doesn'T work.
I tried changing the registry key of the GPS mode and it didn't help.
Any other things I can try?
stanelie said:
Well,
I'm here in Madrid now and it doesn'T work.
I tried changing the registry key of the GPS mode and it didn't help.
Any other things I can try?
Click to expand...
Click to collapse
How long did you wait, and do you have a clear view of the sky?
After traveling a long distance it can take some time to download the full catalog info on the satellites.
I waited a few hours in clear sight of the sky.
My old hp hw 6515 with a old stand-alone GPS chips can find a lock fine...
sorry, double post...
I have had my gps lock over the ocean in an airplane. I dont have navigation software installed other than google maps so I just used Visual GPS to verify I had lat/lon fix and a gps speedometer app to tell me I was going at the same speed the captain had said. No wireless data connection at all.
Hi, I have a similar problem, but when I'm in a no service area, the GPS locks in 2 minutes. When the phone gets a cell phone tower, never gets a lock unless I let him overnight catching sats. I'm from Venezuela, may be the cell phone towers or the network, I don't know, induce some kind of conflict in the position calculation of the GPS. In the flight mode the problem persist.
First off I'm just a bit confused on the whole GPS thing. I have all the tutorials and stuff but will the GPS actually work without the data plan? (aGPS).
I have..
Radio: 3.42.50 Bell Radio
ROM: NFS 1.12VZW
I cant seem to pick up any signal at all...
Any help would be appreciated. Thanks!
GPS will work with out data plan, but maps are loaded from internet most of the time..
also it *might* pull data, that you shouldnt be charged for, aGPS uses a tower to determin the GPS clock and basicaly jump starts your lock by a min or so. with out it, your phone would search for GPS signals and try to sync its time with it, befor lockign on to all 3.
with aGPS it only uses a tower and 2 others
Hi Guys,
Here is an excellent article covering gps vrs agps:
http://www.wmexperts.com/articles/gps_vs_agps_a_quick_tutorial.html
As spyderekz said, our Vogues are capable of "stand-alone" gps. Having said that, agps is more accurate.
I am an Airline pilot with Air Canada Jazz, I have tested my gps in the air (with the phone in airplane mode), and the gps was able to lock. GPS sattelites are all numbered, both TomTom and gps viewer (GPS viewer is included in NFSFAN's ROM) display GPS status pages. These pages show how many sattelites you are recieving, and their numbers. Our Aircraft FMS (flight management system) has a similiar page. Both my Vogue and the aircraft picked up the same sattelites (The airplane picked up more, then again, MUCH bigger antenna!!!).
I also live in BC, I have used TomTom driving many mountain passes with no cell phone reception and TT keeps ticking along nicely.
I should add I'm on the Bell network, and Bell has not locked any GPS functions unlike Verizon where users must jump through many hoops to get it working.
Quick question tankbusta, what network are you on?....nerermind, just noticed your Verizon. Have you tried the stock Verizon ROM, complete the agps fix, then flash to NFSFAN's ROM???
If you search the posts, you'll see NFSFAN recommends using your own carriers radio, and letting ALL customizations run when upgrading that radio. As long as Verizon has a 3.xxxx radio, you should be able to use the tutorial to get gps working.
No problem using TomTom.
hi i was wondering if anyone knows what is the 6digit epst code that you get from getspc for a htc touvh 6900???
It is "000000"
Gah...this seemed like it was resolved for me, but now it's come back. When I have the GPS off and "Use Wireless Networks" turned on, my Vibrant (and every other smartphone I've owned in the past 5 years) has been able to use cellular location service to approximate my location. Again, I'm not talking about GPS. GPS is turned off.
This is really irritating as I use a lot of apps that require my location (weather, etc.), and I really don't want to turn on the GPS every time they need to estimate what part of the city I'm in...it just isn't necessary and takes too long. Location service is necessary for aGPS to get a quick satellite lock even if I was willing to use GPS.
It works great when I'm connect to wifi, but just using cell towers it usually either doesn't work or shows my location as somewhere I was hours ago. I'm in Chicago, by the way. Anyone else having this issue? I'm trying to determine if this is a problem with my phone or if T-Mobile's network in my area is just temporarily stupid. Thanks!
I've noticed that even with my gps turned on as long as I'm not constantly running an app that uses my location the gps will just blip on for whatever its needed for and then when you don't need it anymore its turns off, not wasting much battery.
I have noticed that my margin of error on my vibrant seems to be bigger than on my G1, but I can't fully confirm that, however I would probably turn to saying that its tmobile's issue with their towers (triangulation and all that jazz)
bessertier said:
I've noticed that even with my gps turned on as long as I'm not constantly running an app that uses my location the gps will just blip on for whatever its needed for and then when you don't need it anymore its turns off, not wasting much battery.
Click to expand...
Click to collapse
The problem is that aGPS needs to use the location service to approximate your location...otherwise it takes a long time to get a GPS lock. Since my location service has been acting up I haven't been getting quick GPS locks anymore.
bessertier said:
I have noticed that my margin of error on my vibrant seems to be bigger than on my G1, but I can't fully confirm that, however I would probably turn to saying that its tmobile's issue with their towers (triangulation and all that jazz)
Click to expand...
Click to collapse
Hope so. I've never had problems with other phones in this area, so I hope it's not the Vibrant. I've already had it replaced once for a bad Menu "button."
It worked once when I first tried it but ever since then for example when I go into maps, it's always searching and searching. the local filter in the bing search doesn't work either...
What can I do? Anyone have the same issue?
I've managed to bring up my location but it's highly innacurate. I downloaded the GPS app that is available in the marketplace and it's showing the wrong latitude/longitude coordinates as well.
Highly annoying.
Do you have Weatherbug installed? This app seemed to break my location service too. Sometimes it showed my location a few hundred miles away... I then uninstalled Weatherbug and somehow, after a while, it was working again -strange.
Now it's very accurate and fast.
Then go into settings -> "find my phone" and check the upper box for "saving the location".
It could also be a problem with your carrier -the location service first takes the location via A-GPS which is you provider's responsibility.
GPS might take a few minutes to determine the exact location.
I called 3 and they said I could arrange a door to door exchange but first they advised me to go to the 3 store nearby and use my SIM in another omnia 7 to see if it works.
Surprise surpise, after the call, the GPS is now perfect. I wonder if they did something at their end lol.
So after a few days use, I have come to the conclusion that the GPS doesn't seem to work well indoors, but as soon as I go outdoors, it's tracking me just fine.
digger1985 said:
So after a few days use, I have come to the conclusion that the GPS doesn't seem to work well indoors, but as soon as I go outdoors, it's tracking me just fine.
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Click to collapse
GPS will absolutely NOT work indoors because it needs nearly line-of-sight to the GPS satellites above. The roof of a car might work but the roof of a house won't.
Indoors the phone is using A-GPS, the triangulation of cell towers of your network operator. It's very inaccurate and might get no location at all.
See my post here: http://forum.xda-developers.com/showpost.php?p=9417735&postcount=2
Clock Updates
I recently traveled to Los Angeles with my TF. When I turned on my TF and connected to WiFi, I expected it to update the time based on the GPS location. It did not.
So I checked the clock settings, and it is set to auto-update the time (Network time I think it's called). Curiously, it's set to -5 Central Time (which -6 is Central, -5 is Eastern). Not sure why, but this was a pretty odd setting to me.
GPS
This is more of a curiosity question. In the air, I decided to see where I was. I figured, "I have a GPS in my tablet, it should be able to tell me where I am." I was wrong! It was not able to grab a satellite while in the air, which seems silly to me.
Is it a true GPS or does it get location data from somewhere else? Seems to me like it SHOULD work in an airplane, but I might not understand the technology appropriately.
It is typically rather difficult to get a workable GPS signal on an aircraft. You generally need to be right up against a south facing window.
EtherBoo said:
Clock Updates
I recently traveled to Los Angeles with my TF. When I turned on my TF and connected to WiFi, I expected it to update the time based on the GPS location. It did not.
So I checked the clock settings, and it is set to auto-update the time (Network time I think it's called). Curiously, it's set to -5 Central Time (which -6 is Central, -5 is Eastern). Not sure why, but this was a pretty odd setting to me.
GPS
This is more of a curiosity question. In the air, I decided to see where I was. I figured, "I have a GPS in my tablet, it should be able to tell me where I am." I was wrong! It was not able to grab a satellite while in the air, which seems silly to me.
Is it a true GPS or does it get location data from somewhere else? Seems to me like it SHOULD work in an airplane, but I might not understand the technology appropriately.
Click to expand...
Click to collapse
Ive also noticed that if your moving it doesnt grab the signal as good as if your connected Via a mobile hotspot or your cell. The only way it works flawlessly, is if you turn the map on standing still to see the area where your at.
Like the commercial where they get stranded and the guy holding the Transformer gets out of the car and turns on GPS and it locks on. if i do that , it works perfectly but moving in a car it fails to update on time as i move
Other thing to keep in mind is that the system uses A-GPS where it uses the data connection to download info on the current locations of the GPS satellites therefore equaling a much faster lock on. If you don't have a data connection, naturally you'd find it take longer to lock on. I've tried the GPS sitting in my room, a good 15 feet from a shaded window and I can lock on 9 or so satellites relatively quickly. I imagine that your movement speed also affects the lock speed and a plane is usually moving a little bit.
Good to know about the GPS, thank you.
So what's up with the Clock not updating and claiming CST is -5 GMT?
Many commercial gps chips have a relatively low max speed limit. They are ok for normal vehicle travel, but will not work in aircraft or other high speed vehicles. This is by design. Prevents them from being used for military purposes
Only 1 time have I been able to successfully get a GPS lock while in the air, using my old WinMo phone + a BT GPS receiver, while on a flight to HI.
The GPS chip was accurately measuring the speed at ~600 MPH. I don't think there are limits until you get into the supersonic (missile speed) range.
So what's with the clock since the GPS question has been answered?
Sorry, I know this is slightly old, but as far as I know it's because of DST.
was daylight saving time set. Also remember some locations in the US do not use DST. Check your settings. It does not read actual local, time, but rather reads GMT and does the math. If you give it the wrong inputs, it will give you the wrong answer.