Database Develop

QuickGPS: does it download data for current region only or whole world?

I'm going to be travelling internationally soon and would like to preload my QuickGPS for both the USA and Europe - will a "normal" QuickGPS download do that or do I need to do something special?
Mainly I'd like to avoid having to connect to the network in Europe on arrival to get a solid GPS lock.
Are there any good descriptions of specifically how QuickGPS works?
TIA,
Richard

assuming its the same quickgps as the one in the 6915/45/25 - it works great in any part of the world. all automatic no tweaking required.

djmaven said:
assuming its the same quickgps as the one in the 6915/45/25 - it works great in any part of the world. all automatic no tweaking required.
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Sorry, I wasn't clear. Will running it in the USA provide the data for being in Europe?
I accept that runnning it in Europe would likely get the appropriate local data, but I don't necessarily want to pay $.02/KB to download data when I get to Europe - though that wouldn't be the end of the world.
Kinda curious, that's all.
Richard

rsolomon said:
Sorry, I wasn't clear. Will running it in the USA provide the data for being in Europe?
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u just made it worse

xbox360 said:
u just made it worse
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LOL. OK, one more try It's probably a stupid question...
QuickGPS downloads satellite data, right? Does it download ALL the satellite data, or just the ones it thinks are near you? I.e. if I'm in the USA will it only download the birds near me or *ALL* the birds? Thus if I download "fresh" QuickGPS data right before I leave the USA will I get quick acquisition in the USA on departure *AND* quick acquisition in EU upon arrival? or would I have to run QuickGPS and download once I got to EU in order to get the quick acquisisition?
Richard

Good question. I am not sure since I don't remember if I did aQuickGps before using it in Europe. However logic says a US download should be OK for the whole world since the download is Internet based and when the phone pulls the data, the internet does not know where its located (if it would know - who needs the data?) so it should be worldwide.

Don't worry, there are only 24 GPS satellites orbiting the Earth and you get their positions all at once every time you use QuickGPS

I think the quikGPS picks up data by detecting where your gps receiver is located, so it work worldwide.
kms

barmalini is right regardless of where you are located it downloads all the predicted ephemeris data for the satellites of the GPS constellation, you can read more about "offline AGPS" here -> http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=47602

Although no one has really answered the OP's actual question - namely will running quick GPS in the US before flying to Europe help his GPS to start up quickly in Europe?
The quick answer is NO. QuickGPS gets info from your device as to its current location (from Cell towers). Thus if you run quickGPS in the states, it will tell your GPS that you are in the states, even if you then fly to europe.
If the OP wants a really fast GPS start up in europe, he will need to run QGPS when he arrives. If not, he can simply run any GPS enabled app on his device and wait for it to acquire a fix (although as previously discussed, Google Maps times out really quickly... but if data costs are a worry then he must be using a GPS app with maps preinstalled on the device).

We did answer and if you had read mine and/or followed my link you would realize that the content of the downloaded data has no connection whatsoever to cell towers.
So yes, since the data is the same worldwide, data downloaded in the US will help when you arrive in Europe, KEEPING IN MIND that you are no longer doing a "warm fix" but a "cold fix" due to the distance covered so i(for an open sky environment) instead of 5/10 seconds for warm fix it might take 20/25, still better than the 40/45 without QuickGPS.

GpsPasSion said:
barmalini is right regardless of where you are located it downloads all the predicted ephemeris data for the satellites of the GPS constellation, you can read more about "offline AGPS" here -> http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=47602
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That's what I *hoped*, but the registry for QuickGPS contains a number of "region" keys: e.g.
[HKEY_LOCAL_MACHINE\Software\HTC\QuickGPS]
"curRegion"=dword:00000002
"region"="US"
so I was concerned the data might be somehow specific to the location I downloaded from.
Richard
P.S. @GpsPasSion - good to see you over "here" on xda-dev, I should have thought to check your site I suppose

GpsPasSion said:
So yes, since the data is the same worldwide, data downloaded in the US will help when you arrive in Europe, KEEPING IN MIND that you are no longer doing a "warm fix" but a "cold fix" due to the distance covered so i(for an open sky environment) instead of 5/10 seconds for warm fix it might take 20/25, still better than the 40/45 without QuickGPS.
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I'll try and remember and do some timed testing - my recollection from my SirfStarIII-based BT338 was that a few minutes were required for the first fix after landing, but I never timed it accurately.
Richard

unwired4 said:
The quick answer is NO. QuickGPS gets info from your device as to its current location (from Cell towers). Thus if you run quickGPS in the states, it will tell your GPS that you are in the states, even if you then fly to europe.
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I'm not quite sure I understand this response. QuickGPS downloads the ephemeris data for the satellites, which tells the phone where all the satellites are, and are expected to be for the near future. It's the same data the phone would get from the satellite, but the satellites transmit this data fairly slowly (and you only need signal from one satellite... each satellite transmits the ephemeris data for all 24 satellites). Regardless of where you and your phone are, the satellites are where they are. Why would QuickGPS care about your current location?

Guys....i know this is not related but when you guys say that one can get a faster fix after downloading the data using QuickGPS, how much faster are you guys taking about? Reason i ask is cos i can download the latest data using QuickGPS then launch Mapking, it still takes between 10 - 15 minutes for me to get a fix (i would probaby have reached my destination by then). Am i missing out something here cos i believe somebody said 45 seconds

oh yes, there is something wrong, I put some numbers above.
Now if you have a coated windshield, are moving and the Kaiser is on the passenger seat then you're asking for trouble !
@dscline - you must have missed some of the replies, QuickGPS data is location independent ;-)

GpsPasSion said:
@dscline - you must have missed some of the replies, QuickGPS data is location independent ;-)
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heh, yeah, his post was at the bottom of the page... when I replied, I didn't realize there was already a whole other page with posts debating that statement.

GpsPasSion said:
oh yes, there is something wrong, I put some numbers above.
Now if you have a coated windshield, are moving and the Kaiser is on the passenger seat then you're asking for trouble !
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I just tried it again. This time, i just put the Kaiser on top of the car and left it there....i finally got a fix after 9 minutes. Now....izzit easier to get a fix on the move on when still?
Is there any other software apart from QuickGPS that will help speed up the fix? I tried GPSProxy but got and error when trying to add virtual port so i drop that I would really appreciate any advice cos i use the GPS almost everyday and it's really frastrating to have to wait 10 minutes before getting a fix

Scann69 said:
I just tried it again. This time, i just put the Kaiser on top of the car and left it there....i finally got a fix after 9 minutes.
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Where are you? Unless you're in an urban canyon or under dense tree cover I cannot imagine 9 minutes to first fix.... Should be under a minute.
Richard

rsolomon said:
Where are you? Unless you're in an urban canyon or under dense tree cover I cannot imagine 9 minutes to first fix.... Should be under a minute.
Richard
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Nup....i'm under open sky and i'm in Kuala Lumpur, Malaysia. The thing is, i know that cold start can take longer time and even so, 10 minutes is just way to long and what's worse is, i was using the GPS like 5 hours ago and i just tried it again and still it took 10 minutes to get a fix. I seriously think i'm missing something here

SHERPA!!!!!

Here it is the long awaited Sherpa app v1.0
Works perfect on phone with cy3.6.81
Get it while its HOT!!!

thanks saw the other one earlier wasn't able to download it at work

Thanks been waiting for this really cool app but when you click on something all I get is a blank screen on Cy 3681.

PlatinumMOTO said:
Thanks been waiting for this really cool app but when you click on something all I get is a blank screen on Cy 3681.
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Yup same thing on hero lol. I'm guessing it is still a beta version

A Quick Note About Sherpa
With Cyanogen already including Sherpa in his latest experimental build, there have been a few issues that have arisen. I feel that, because of these issues, any devs who are considering adding Sherpa to their builds should make users aware of these issues. If you are such a dev, feel free to add the following list to your first post. Also, you should make it clear that this version of Sherpa is pre-release.
If you wish to add Sherpa to your builds, you can download the .apk here: http://gynecologistcobra.net/apps/Sherpa.apk
Major Issues
Do not open the keyboard while Sherpa is running. It may cause it to crash.
Sherpa does not work properly on non-US devices. In the worst cases, it will fail to connect to the server. Even if it does connect, it may not be able to discover your surroundings.
Sherpa may fail to launch completely.
Sherpa requires GPS to be active to auto-locate you.
Sherpa may turn on your Wi-Fi while it is running.
Minor issues
Auto-rotate does not work in Sherpa.

It also sometimes just won't start, freezing up while trying to acquire the GPU. Awesome app though

cyanogen said:
It also sometimes just won't start, freezing up while trying to acquire the GPU. Awesome app though
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Well, it was designed for the Magic, which has more RAM, ergo it can freeze on start up.

bolmedias said:
Sherpa may require GPS to be activated in order to locate you.
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It definitely requires GPS for auto-locate to work. I've also seen it turn on my wifi connection.

Chahk said:
It definitely requires GPS for auto-locate to work. I've also seen it turn on my wifi connection.
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Actually, now that you mention it, I have seen the 'Open Wi-Fi Networks' notification flash up while I was running Sherpa. While my WiFi was turned off.

I think this is definitely a pre-release. If you watch logcat, there are hundreds of exceptions being thrown.

bolmedias said:
Actually, now that you mention it, I have seen the 'Open Wi-Fi Networks' notification flash up while I was running Sherpa. While my WiFi was turned off.
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Possibly using skyhook wireless wifi geolocation service for poor gps visibility situations?

Thanks. This is working on cy 3.6.81 with no problems for me

Good stuff on the bugs list but im thinkin the sherpa app that got leaked was a beta version and there will be plenty of bugs, so don't hold your breathe yet but i guess wait till the official once releases.

PlatinumMOTO said:
Thanks been waiting for this really cool app but when you click on something all I get is a blank screen on Cy 3681.
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I am using Cy3.6.8.1 and have NO problems what so ever.
alritewhadeva said:
Yup same thing on hero lol. I'm guessing it is still a beta version
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Its NOT beta, I have NOT tested it on a Hero Rom, however I have GPS on and on wifi so maybe make sure you have GPS on.
Look at the screenshots:

johnnylicious said:
Good stuff on the bugs list but im thinkin the sherpa app that got leaked was a beta version and there will be plenty of bugs, so don't hold your breathe yet but i guess wait till the official once releases.
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Good to see you've calmed down a bit from JAC's thread, Johnny
We know it's a prerelease version. However, people may want to start putting it in their builds, like Cyan has done, so there should be a bugs list.

Lakers3408 said:
I am using Cy3.6.8.1 and have NO problems what so ever.
Its NOT beta, I have NOT tested it on a Hero Rom, however I have GPS on and on wifi so maybe make sure you have GPS on.
Look at the screenshots:
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Thats wierd...I always get a blank screen when I press a place.

alritewhadeva said:
Thats wierd...I always get a blank screen when I press a place.
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That is weird, it does take a few seconds to show, maybe it takes longer on Hero since it is a slower ROM.

After playing around with this app.. I must say its definitely one of the best "places" type app out there. I have noticed a couple things that havent been mentioned. First off, i havent had any fc even after opening the keyboard. The app screen doesnt rotate but is still functional for me in landscape.
I assume this app you can set your location manually via zipcode, city, etc. I would imagine that this also picks up via GPS.
On the bottom where it tells me my location, it is set for my home. GPS isnt picking me up elsewhere, as i am not at home. When i search by zip it works fine.
I also tried to go to google maps and lock on gps there.. but no go so far.
Like i said, i know there will be some small bugs considering this app isnt meant for the g1 Anyone else experience the GPS not locking your current location?

My GPS is off. On google maps I get the correct location but in Sherpa it thinks I'm at home, not at work.

AverageCanadian said:
My GPS is off. On google maps I get the correct location but in Sherpa it thinks I'm at home, not at work.
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Yeah.. I hear you. If i have my gps enabled and go the the Menu in Sherpa, select Go to Location. There is a "Use Current location" Then the little circle to the left of you displayed location with "think" for a couple seconds and stay at the same location... I dont even know how it picked up that location.
If my gps in not enabled then the circle with "think" for as long as you let it.

lost my phone

I lost my phone and I don't know how to track it. I had no tracking apps installed, but I did have CyanogenMod and when I installed it, there was something about location services of Wifi spots.. I dont know.. Is there any way I can find it?

Install plan B via google play.
Just go to the website search for Plan B and install. It wil triggers GPS and sent information about its location..

mrjraider said:
Install plan B via google play.
Just go to the website search for Plan B and install. It wil triggers GPS and sent information about its location..
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It won't let me. I believe the phone is off.. Does that mean that im screwed?
Edit: I tried to install avast and it works. Why does Plan B doesn't work?

I have no idea.
It should work.

mrjraider said:
I have no idea.
It should work.
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maybe it doesn't work with my country?

Been in your shoes
Bei60 said:
maybe it doesn't work with my country?
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If you phone is switched off then you are pretty much screwed.
sorry mate.

siimsander said:
If you phone is switched off then you are pretty much screwed.
sorry mate.
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Maybe I can track the last locations that my phone was in?
Like... If someone was connected to a Wifi and I can track the Wifi's location?

Bei60 said:
Maybe I can track the last locations that my phone was in?
Like... If someone was connected to a Wifi and I can track the Wifi's location?
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Very Doubtful - If your phone was still switched on you could have installed planb.
You can still try to do that and wait until someone else puts in a new sim card.

No GPS without data.

Hi.
I'm overall satisfied with my Xperia Z1 but there's one problem that I find very annoying.
Whenever I'm travelling and not roaming, the GPS won't work. Why is this? GPS shouldn't need to use regular data.
I use cached maps in Google Maps.
Thanks // Patrik

It do not need network. It can have support via network but is not the main function. If you keep moving the GPS gets even 10 minutes to find the satellite. Turn on GPS, turn on Airmode, go out from building leave the phone for 1o minutes to find the signal.
BTW, the Maps or Navigation in Android working with Network, are you sure you get the right application? Use Offline Navigators.

eclyptos said:
It do not need network. It can have support via network but is not the main function. If you keep moving the GPS gets even 10 minutes to find the satellite. Turn on GPS, turn on Airmode, go out from building leave the phone for 1o minutes to find the signal.
BTW, the Maps or Navigation in Android working with Network, are you sure you get the right application? Use Offline Navigators.
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What is airmode?
I was in London last weekend and the GPS was completely useless. I was of course outside and walking around.
I don't see why an offline navigator would make a difference from cached maps in Google Maps. Could you please elaborate your statement?

Something called GPS Assistance Data is downloaded at regular intervals. It contains positioning data for the satellites. If that data is too old, I'm unsure if it's outdated daily or weekly, it will take the phone a long time to get a fix on the satellites.
Download a free app called "GPS Status" to test the behavior. In that app you can also reset GPS and download a fresh Assistance Data set.
Google a bit about A-GPS and you'll find tonnes of info.
Sent from my C6903 using Tapatalk

You might want to check if GPS functions normally through service test menu.
in dialer press *#*#7378423#*#*
Service Tests -->GPS-->GPS Location Test
If you get readings on your location and time it took then your phone is fine.
Then check out settings-->Location services--> Enable GPS satellites.
it might have been accidentally disabled by stamina mode or by user.

Daelyn said:
Something called GPS Assistance Data is downloaded at regular intervals. It contains positioning data for the satellites. If that data is too old, I'm unsure if it's outdated daily or weekly, it will take the phone a long time to get a fix on the satellites.
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You are right, but this is not the issue, like I said it will just get more time to get the satellite but actually I don't think he was out of date because he has connected to network days before and in London to via WiFi for sure, Right?
Daelyn said:
Download a free app called "GPS Status" to test the behavior. In that app you can also reset GPS and download a fresh Assistance Data set.
Google a bit about A-GPS and you'll find tonnes of info.
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I don't think this will make a difference but give it a try.
dellhem said:
What is airmode?
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Sorry, my bad, I mean Airplane Mode.
dellhem said:
I was in London last weekend and the GPS was completely useless. I was of course outside and walking around.
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This explain all, in London with the density of buildings and people the GPS have always problems!
dellhem said:
I don't see why an offline navigator would make a difference from cached maps in Google Maps. Could you please elaborate your statement?
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Google Maps most of the time use network for your position and when there is no network it just cant get the signals and positions, Tom Tom use GPS only, for example.

Daelyn said:
Something called GPS Assistance Data is downloaded at regular intervals. It contains positioning data for the satellites. If that data is too old, I'm unsure if it's outdated daily or weekly, it will take the phone a long time to get a fix on the satellites.
Download a free app called "GPS Status" to test the behavior. In that app you can also reset GPS and download a fresh Assistance Data set.
Google a bit about A-GPS and you'll find tonnes of info.
Sent from my C6903 using Tapatalk
Click to expand...
Click to collapse
As mentioned I was connected the same day via WiFi but I'll check it out. Thanks.
zimbashka said:
You might want to check if GPS functions normally through service test menu.
in dialer press *#*#7378423*#*#
Service Tests -->GPS-->GPS Location Test
If you get readings on your location and time it took then your phone is fine.
Then check out settings-->Location services--> Enable GPS satellites.
it might have been accidentally disabled by stamina mode or by user.
Click to expand...
Click to collapse
Don't think there's a problem with the GPS but that code doesn't work: "Invalid MMI code"
eclyptos said:
You are right, but this is not the issue, like I said it will just get more time to get the satellite but actually I don't think he was out of date because he has connected to network days before and in London to via WiFi for sure, Right?
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Right.
eclyptos said:
Sorry, my bad, I mean Airplane Mode.
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Ok, so then you also meant "turn off"? =)
eclyptos said:
This explain all, in London with the density of buildings and people the GPS have always problems!
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Yeah sure. But is this a big problem in all big cities? I remember I had the same problem in Paris as well.
eclyptos said:
Google Maps most of the time use network for your position and when there is no network it just cant get the signals and positions, Tom Tom use GPS only, for example.
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Ok. I don't really understand how positioning works just through the internet though. Sure, trianglulation, but that's through the cell receivers which I'm connected to all the time. How can the phone know where I am just by being connected to the internet via WiFi?

dellhem said:
Ok, so then you also meant "turn off"? =)
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dellhem said:
Yeah sure. But is this a big problem in all big cities? I remember I had the same problem in Paris as well.
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Click to collapse
I know, it should not have this problems but actually it does. I remember I had to wait more than 10 minutes to get the signal.
dellhem said:
Ok. I don't really understand how positioning works just through the internet though. Sure, trianglulation, but that's through the cell receivers which I'm connected to all the time. How can the phone know where I am just by being connected to the internet via WiFi?
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I know but actually I know this problem from long time, in fact when you buy or download a Navigation you always have to check if it's working Offline or Online. Difference is that, Offline Navigation use downloaded maps, Online use maps from Network and this make huge difference and when you are without Network it not working. Maybe today is different but I remember it was like that. Download a simply GPS Tester to check if you get the satellite, if it does then is not the problem of you GPS but of the Application. Then I recommend to use the Offline Neavigators for GPS Only.

eclyptos said:
This explain all, in London with the density of buildings and people the GPS have always problems!
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No, it doesn't explain it and No, there isn't always a problem with GPS. Where did you get that from?
---------- Post added at 09:11 PM ---------- Previous post was at 09:07 PM ----------
My Z1 has similarly bad GPS lock times but is under 20 seconds with "Use Wi-fi and data network" enabled to provide additional info. Google seems to have something to do to this because to enable the setting you must agree to them stealing further info about your habits.
My 3 year old HTC gets lock in under 20 seconds with no GLONASS and without "Use Wi-fi and data network" enabled.

From services mode delete the assisted gps data and it will download new ones when u a connected to wifi or mobile data...after that even if u are not connected to network u should get a lock pretty faat...but this data expires pretty soon cuz sat positions keep changing...

[Q] Unrecorded 100KB mobile data traffic every 10 minutes -

I got a new XT1068 (dual-SIM unlocked) last week. It came with Android 5.0.2 out of the box and hasn't been updated yet.
My mobile data plan starts on the 1st of every month and I get 500MB. I don't browse much on mobile data so I keep it on all the time for push updates and such.
The other day (the 8th) I got a text from my carrier saying I used all the data. This had never happened before on any phone or any carrier I've used.
I went to the carriers website to check my account and it shows mobile data traffic in bursts of 100KB approximately every 10 minutes right up until they cut my access, because I reached the cap.
The odd thing is under "Data usage" I don't see any of these bursts.
A friend of mine had the exact same problem (same model and same carrier) and his solution was to do a Factory Restore. I want to find a better solution, because the phone just came from the factory.
Any ideas?

Try disabling Google location reporting, an use greneefy to other apps

fburgos said:
Try disabling Google location reporting, an use greneefy to other apps
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Click to collapse
Thanks for your reply. I really like all the Google Now stuff, so I won't disable location, but I will look at Greeneefy.
I managed to find some concrete information on this here. The proposed solution was to change the APN settings to not include supl (Secure User Plane Location). Apparently that has to do with A-GPS and uses very little data, but I'm unlucky enough that my carrier deducts 100KB for every connection.
I applied the fix, but since I'm out of data, I can only know if it worked next month. I will report back.

MrBaker said:
Thanks for your reply. I really like all the Google Now stuff, so I won't disable location, but I will look at Greeneefy.
I managed to find some concrete information on this here. The proposed solution was to change the APN settings to not include supl (Secure User Plane Location). Apparently that has to do with A-GPS and uses very little data, but I'm unlucky enough that my carrier deducts 100KB for every connection.
I applied the fix, but since I'm out of data, I can only know if it worked next month. I will report back.
Click to expand...
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You could restrict Data Usage on Google Services too.

SirRhor said:
You could restrict Data Usage on Google Services too.
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If this fix doesn't work I guess that's the only option. That would probably mess with location, wouldn't it?

MrBaker said:
If this fix doesn't work I guess that's the only option. That would probably mess with location, wouldn't it?
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I don't think so, when the phone needs to know where it is, it triangulates its position between cell towers (with no actual data being used) plus GPS and plus WiFi if connected. You can try it and see if it works.

SirRhor said:
I don't think so, when the phone needs to know where it is, it triangulates its position between cell towers (with no actual data being used) plus GPS and plus WiFi if connected. You can try it and see if it works.
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OK. It should still mess with some other things, I suspect.
I'll see if this SUPL thing works and if not I'll look into other options. Truth is that issue explains the frequent data use and the fact that it isn't reported under Data usage, so I really think that might be it.

SirRhor said:
I don't think so, when the phone needs to know where it is, it triangulates its position between cell towers (with no actual data being used) plus GPS and plus WiFi if connected. You can try it and see if it works.
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Yes Sir that's right the phone don't need internet connection to know it's location but if Google reporting is enabled is will connect to send it's location to Google servers I think it will help disabling location reporting also battery is improved a lot

fburgos said:
Yes Sir that's right the phone don't need internet connection to know it's location but if Google reporting is enabled is will connect to send it's location to Google servers I think it will help disabling location reporting also battery is improved a lot
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Click to collapse
I see. I'm happy with the battery life so far and I find Google's services very useful, so I'll leave it on for now. If the same problem turns up, I'll really have no choice but to turn it off.