[Q] Gps / location services - General Questions and Answers

Sorry I couldn't find the exact match with my issue so I thought of creating a new thread.
I updated my Xperia Neo ROM but I'm having difficulties with GPS/LOCATON service. It works fine on a 3G network but it couldn't load my location whenever I am connected to a wifi network. I've tried using different apps on my phone but still wouldn't work. It just keeps on searching/loading.
It used to work fine before with stock ICS 4.0.4 ROM/KERNEL. Is switching back the only fix? Please help. :crying:

I have the same issue, gps location is not working for my new rom either (unoffical jellaxy cymod 10 - http://forum.xda-developers.com/showthread.php?t=1875015) is there a fix/patch to flash??!

djrsa said:
I have the same issue, gps location is not working for my new rom either (unoffical jellaxy cymod 10 - http://forum.xda-developers.com/showthread.php?t=1875015) is there a fix/patch to flash??!
Click to expand...
Click to collapse
GPS on wifi is now working on my NEO. I think it's my wifi connection or just my area.

A possible cause and fix
PrinceRayman said:
Sorry I couldn't find the exact match with my issue so I thought of creating a new thread.
I updated my Xperia Neo ROM but I'm having difficulties with GPS/LOCATON service. It works fine on a 3G network but it couldn't load my location whenever I am connected to a wifi network. I've tried using different apps on my phone but still wouldn't work. It just keeps on searching/loading.
It used to work fine before with stock ICS 4.0.4 ROM/KERNEL. Is switching back the only fix? Please help. :crying:
Click to expand...
Click to collapse
Remember that Android has 3 different location services:
Real GPS, this requires only the ability to "see" the sky where the GPS locations are flying over your head, plus up to 15 minutes to download the weekly schedule of where they are flying (the 15 minute download can be replaced by a 5 second web download, but you will still need the 1.5 to 3 minute download of latest updates). Additionally, it may waste a few extra minutes looking for the wrong satellites if it things you are in a different part of the world than you are (this depends on the rom, radio firmware and GPS chip).
Cell tower location service: This sends the number of the nearest 2G/3G/4G to an online service which looks up where that tower is, giving a rough location.
Wi-Fi access point location service: This sends the name and/or MAC address of the nearest Wi-Fi access point to a Google service, which returns where other users were last time they saw that Wi-Fi access point with GPS on and Google Maps Wi-Fi location sharing on.
From this I guess one of 2 things are wrong:
:silly:Your Wi-Fi network is not in Google's database (unlikely since it was recognized with your previous firmware).
The option to share Wi-Fi location data with Google maps is off after the update, :fingers-crossed:try turning it off, then on.

Related

GPS Not working after 1.5 update

I have updated to the 1.5 and eversince my GPS doesn't work...when i click on maps and my location the signal for gps doesn't come on and when i select my location it says it is unable to determine my location because the gps never comes up.....i have searched for this answer but have not found anything...any help?
kn0582 said:
I have updated to the 1.5 and eversince my GPS doesn't work...when i click on maps and my location the signal for gps doesn't come on and when i select my location it says it is unable to determine my location because the gps never comes up.....i have searched for this answer but have not found anything...any help?
Click to expand...
Click to collapse
did you enable GPS in settings? It's disabled by default.
GPS on my phone since 1.5 has been 10x better than before. aGPS ftw.
mine seems to be working fine. have you updated your radio?
yeah i did enable the settings and i have not updated the radio is that the update from HTC on the Dude 1.5 thread?
My gps picks up my location allooooot faster with the new radio too.
kn0582 said:
yeah i did enable the settings and i have not updated the radio is that the update from HTC on the Dude 1.5 thread?
Click to expand...
Click to collapse
could be, i have no club about the dude's though, im using Haykuro's ADP1.5 and updated my radio. You probably should do it if you can, it MAY fix your problem and it wont hurt anything.
all the radios posted are the same
it doesnt matter what build you are one
the radio is for the cupcake rom aka 1.5
so go ahead and update your radio
and if your gps is still giving you problems and wipe will be the best bet
just rmr to back up
I believe 1.5 supports A-GPS, which uses external servers (accessed over the data connection) to help speed up GPS initialization and in some cases calculations. This does leak some location data off the phone though, if you care about this.
Okay thanks for the suggestions i will try to do this today and see what happens...
uta8111 said:
I believe 1.5 supports A-GPS, which uses external servers (accessed over the data connection) to help speed up GPS initialization and in some cases calculations. This does leak some location data off the phone though, if you care about this.
Click to expand...
Click to collapse
Is there anyway to use the old method? What about us users without a data plan? That kills the GPS for us.
I had the same problem when I updated my phone to JF1.51. I just wiped and re-installed. Now my GPS is faster then ever.
You are not alone
I have updated my radio and spl, enabled gps, and still it takes 30 minutes for the phone to find my location. I have asked on occasion about this, and a few others have had the same problem. So I don't know what to tell you. Glad I could be no help to you.
To speed up GPS location, the new updates also include aGPS, a = assisted.
This is when it will utilise your internet connection via wifi or 3G/EDGE to triangulate your position between transmission towers to help give a rough estimate as to where you are in the world, giving the actual GPS unit a headstart in locating where you are.
You would need to enable this though. Settings > Security & Location > Use wireless networks. Also make sure Enable GPS Satellites is enabled too.
Cell location (without gps) seems to be broken with 3g in 1.5. If I switch to edge, I get my approximate location every time.
But if I use 3g, google maps rarely finds my location, unless I turn on gps.
What build are you using? I've had no problems with Dude's ROM personally as previously I was on JF before taking the jump to a more updated and heavily optimised ROM. Could be worth trying it out if you are still on JF.
I have the same problem, now I can only use GPS with wireless connection.
If I untick the wireless option, the GPS become useless.
I'm using Rogers v3 rom, latest radio and SPL, can anyone help us to solve the problem?
kn0582 said:
yeah i did enable the settings and i have not updated the radio is that the update from HTC on the Dude 1.5 thread?
Click to expand...
Click to collapse
I can't remember if 1.5 had this, but I think it did. Did you get a prompt when you enabled it via settings (not through a second hand app, actually through the internal settings)? My GPS didn't work until I went in and disabled/reenabled both the Cell and GPS location services. When I did this, I got a prompt from Google to agree to terms (or whatever) and after selecting - whamo. Worked.

GPS signal - source

Hello All,
OK, This will show you how out of the loop I am.
Purchased an HTC Touch Pro (via CL), phone to see how it would work as simply an GPS while riding the motorcycle all over creation this summer.
I was able to download Google maps(4.0) here at home & installed via WIFI. After installing I could not get any satellites to 'come in'. I enabled the phone part on the Touch,then the satellites (5) became available and did in fact show my location! I am not going to get an actual data plan for this phone FYI. My question is,were does the GPS satellites "come from"? I assume the only way this will function properly is to have an WIFI connection? That being said, how does the regular 'car gps's' get their signal driving down the road?
Is the gps radio signal independent of both the wifi & data signals, I guess is what I am asking? Why would I have had to enable the phone/ON for the satellites to show up,when I do not have a data plan? Maybe just an inherit setup for the gps radio,config?
Thanks,
Barry
http://en.wikipedia.org/wiki/Global_Positioning_System
you can use GPS for free, you don't need to have a wifi connection or any other data connection
accountabc,
Thanks for the link! I was 'hoping' this is how the gps thing shook down. I figured there would have to be a catch to were I would have to have a data plan on the U S Cellular enabled HTC Touch Pro. This is going to work out just as I had hoped! No GPS hanging off of the handlebars,being a target for thieves every time i get away from the bike!!!.
Suweeeet!!!
Now if I can read it while tooling around the switchbacks???,,,Yikes...
take Care,
Barry
accountabc,
I had a brilliant idea,to test the viability of my Google Maps working without an Data or WIFI connection. I unplugged my Access point here. Tried opening Google Maps on the HTC Touch Pro, and get the 'connecting' dialouge at the top right of GM's. It finally times out with saying" A data connection is required for this app". I tried going into the setting of the "external gps" and took off the 'automatically configure' and set the com ports several different ways to no avail.
This phone does have the latest ROM that U S Cellular provides. I may have to try and start hacking with some other ROM's to see if an 'unlocked' ROM may circumvent this problem? Although I have had this phone for almost two months I have just started getting acclimated with it ,the last 2 days.
I'll do some more searching here to see if someone does in fact have a workaround for this? It does seem the GPS radio should do the grunt work. I am just not sure about the Google Maps needed to be updated dynamically with a net connection?
Thanks again,
Barry
why not use something like garmin xt which doesn't require a data conenction since all the maps are on a sd card

Lost Network Location (Cell Tower only) after Rooting?

Hello,
I searched EXTENSIVELY for a solution, but haven't found one yet.
PROBLEM: Phone won't locate using the cell tower triangulation method after rooting (Hack Kit). I tested (briefly) going back to the stock RUU and it seemed to work. This is my 2nd phone, as I returned the other one due to a bad ON/OFF switch. Had the same problem with the other phone.
DATA:
Root: Hack Kit.
GMaps works with GPS, Wifi. GMaps about page indicates a valid cell tower ID: 310:410:51799:249174939
RADIO:12.39.60.19P_26.06.04.06_M
ROM: Revolution 3.5
Kernel: 2.6.32.34
I tried different ROMS (Revolution 3.2,3.3 & 3.5), RADIOS, RIL files, build.prop files / settings, and many combinations of those. AFAIK the location feature stopped working right after the gfree step in the Hack Kit. I also tried Rumball's fix, which didn't work for me.
So, can anyone test / confirm any of the following?
1. Cell Tower location works with stock AT&T RUU?
2. Cell Tower location works / does not work after rooting?
3. Any ideas!?
Appreciate it. Thanks!
Edit: I just reread that, my comment doesn't make sense. Apologies!
I can confirm that I don't get located via cell tower on my current Rom. Never paid attention before as I always leave the gps on due to being in the country and cell "triangulation" being impossible only resulting in me finding the location of the one tower close enough to connect to at the time.
Edit..just wanted to point out that WiFi location does work with gps off but not cell tower.
@silas0220 : Thanks. The antenna is working fine as I can make /receive calls and use the net as usual.
@newter55 : Thanks. The cell tower location works OK with WiFi as well.
PS,
I'm trying CM7 right now. Will post back later if it changes anything.
I can confirm that my network location does not work on my rooted Inspire also. Weird thing is I've only noticed it after installing MIUI ROM. I can't remember if I had this problem on CM7 before. The way I found out was when Yelp wouldn't let me check in because it says I'm too far from the location.
quickxlr8 said:
I can confirm that my network location does not work on my rooted Inspire also. Weird thing is I've only noticed it after installing MIUI ROM. I can't remember if I had this problem on CM7 before. The way I found out was when Yelp wouldn't let me check in because it says I'm too far from the location.
Click to expand...
Click to collapse
It doesn't work on CM7 either. As soon as I have the time I will unroot and go back to stock and check if it works...

Nexus S GPS

Hi guys! New to the forum and the Android OS. I've just purchased the Nexus S a couple of weeks ago and the phone is great except for a couple of minor details, but one thing really bothers me is the GPS. When I'm connected to wi-fi, Google maps is able to tell me my location fairly accurately. However, outdoors with no wi-fi, I try to have the settings to locate me based on satellite, but that always give me a "your current location is temporarily unavailable" message. I'm basically completely outdoors with view of the clear blue sky and it will always give me this message. Is something wrong
I've searched on the forum but nothing that answers my question. Anyone?
Hi,
Based on your question I am not shure if you are aware of the following:
GPS is only one of several location detection methods used by your phone. Another one is based on WIFI hotspots in range. Basically the phone scans the wifi frequencies to look for ALL hotspots in range and then sends this list of hotspots to google (only if some kind of internet access is available to the phone!). When this combination of hotspots is known to google, your phone gets an estimated location back from the google server. So from what you write, it is possible that you never had a gps fix, even when you got a (fairly good) location based on wifi.
I suggest you install some gps software other than google maps to check the functionality of your device. I use "GPS test", should be on the market. All it does, is scanning for satellites and displaying the list of discovered satelites. When the signal is good enough, you get a "U" in the column "flags" for the locked satellites.
Attention! You must start the scan manually from the apps context menu.
cheers
Yeah you gotta turn on your GPS for a more accurate reading if you're using maps or other navigational app
Sent from my Nexus S 4G using XDA App
Just an update. I haven't needed to use the GPS lately, but this week I decided to try again, and before, I have gotten a GPS fix with the GPS Test app. But that signal never lasts very long and it also takes a really long time for the app to use the satellite to lock on to my location. The GPS indicator on the top left of the app is usually yellow and only after a long time does it turn green, but sometimes it never turns green even with 7 or 8 satellites in view. Is this just a limitation of mobile GPS in cell phones?
I don't have a data plan so I can't connect to the internet while on the road, hence the need for GPS without having internet access.
As long as you have the SIM inserted, not on airplane mode and gps is turned on, and nothing is wrong with your phone hardware I don't see why it shouldn't get location fix outdoor.
There are some good offline maps like Osmand and MapDroyd.

[Q] Moved 30 miles away, router from that home still thinks its there?!!?

I've got a screwy situation I'm desperately seeking a resolution to... simply put, we moved, and since then my Galaxy S2 (AT&T) pulls location from wifi when connected to it, everything within the phone keeps showing up that we're still back home, 30 miles away in a different state! But simply turn wifi off and then use 3G for location, and from the same spot in the new house, everything begins to work normally...
Now here's the twist - only on certain roms does this happen. Right now, I'm running MIUI 2.3.7, build MIUI-203090. Right now, on THIS rom, everything is working as it should... wifi is on, phone connected, showing all the correct information for the correct area... by changing roms, with all the same settings selected, the phone begins showing up back in the former location, and I begin to boil. I've reset the router back to factory defaults, and the same problem exists... I'm convinced it's a router issue.... I have an HTC Inspire that I had until 2 weeks ago when I made the upgrade... I broke it out and used it to test... and I can confirm that, on certain roms, even with a totally different phone, the SAME problem results because its connecting wirelessly to the same router....
Any ideas??
I assume that you are using the same router as previously?.. A router does not necessarily re-ping its location on a regular basis and so you may very well need to update your location in the skyhook database..
http://www.skyhookwireless.com/howitworks/submit_ap.php
Midnight1970 said:
I've got a screwy situation I'm desperately seeking a resolution to... simply put, we moved, and since then my Galaxy S2 (AT&T) pulls location from wifi when connected to it, everything within the phone keeps showing up that we're still back home, 30 miles away in a different state! But simply turn wifi off and then use 3G for location, and from the same spot in the new house, everything begins to work normally...
Now here's the twist - only on certain roms does this happen. Right now, I'm running MIUI 2.3.7, build MIUI-203090. Right now, on THIS rom, everything is working as it should... wifi is on, phone connected, showing all the correct information for the correct area... by changing roms, with all the same settings selected, the phone begins showing up back in the former location, and I begin to boil. I've reset the router back to factory defaults, and the same problem exists... I'm convinced it's a router issue.... I have an HTC Inspire that I had until 2 weeks ago when I made the upgrade... I broke it out and used it to test... and I can confirm that, on certain roms, even with a totally different phone, the SAME problem results because its connecting wirelessly to the same router....
Any ideas??
Click to expand...
Click to collapse
Never heard of this before - will try it...
If you have Google location checked it may be using the known location when it was first detected.
Change your router wifi name. Then it may not know anything except through GPS.
Sent from my DROID RAZR using xda premium
I tried the skyhook option, but it's not real clear - either it could take affect or could take up to 7 days - ?!??
The router's wifi name has been changed - and even went as far as to restore it back to factory defaults... STILL the same result... I'm absolutely confused.
this issue is not uncommon.. eg. my mobile hotspot shows me at home no matter where i am in the USA... a router is part of infrastructure and so is a fixed location... if not then the skyhook database would not even be required.
For any changes to take affect you will need to power cycle the router... and yes, a free service may take time to resolve itself.
you're welcome
p.s. nowhere anywhere on the web is a router referred to by name.. it has a unique mac address..it is this address that is tied to your location so change all you want.. but until the db is updated you will live 30 miles away
Midnight1970 said:
I tried the skyhook option, but it's not real clear - either it could take affect or could take up to 7 days - ?!??
The router's wifi name has been changed - and even went as far as to restore it back to factory defaults... STILL the same result... I'm absolutely confused.
Click to expand...
Click to collapse
Mystic38 said:
For any changes to take affect you will need to power cycle the router... and yes, a free service may take time to resolve itself.
p.s. nowhere anywhere on the web is a router referred to by name.. it has a unique mac address..it is this address that is tied to your location so change all you want.. but until the db is updated you will live 30 miles away
Click to expand...
Click to collapse
"until the db is updated?" - I'm sorry, can you be more specific?
I have a Belkin n450+ router... how would I accomplish this?
I had been powered off all during the move, well over 24 hours - I'm confused about how to go about "clearing the db" -
if you have reported the location change to the skyhook server, you will have to wait for them to update their database (db..sorry)..
You have tried a reset, the only other suggestion other than to wait is to restore the factory firmware to factory settings.. you may need to update firmware after this and will need to reset and configure your network, but its an idea..
Midnight1970 said:
I had been powered off all during the move, well over 24 hours - I'm confused about how to go about "clearing the db" -
Click to expand...
Click to collapse
Just did a search for this problem and found this thread. Is this still the best solution?
Google uses many methods for its location, WiFi, GPS and Cell towers.
Remember that Google Street View car that travels around. It also tracks location and if it sees a WiFi signal it records the broadcasted name and location. If you use a Google service, phone or PC Google tracks the WiFi access point name. If it has a record of that name if knows your location. Otherwise it only knows your IP address is within a certain area of a city.
So, Google knows your WiFi routers name is at a particular address/location, then you move. Google doesn't know you moved so it continues thinking you're at your old address.
Changing the Routers WiFi name and a new IP address forces Google to relocate you by using GPS and other WiFi Hotspots it sees near you on your phone. It will then associate your new WiFi router name with your new location.
Basically but more complex than that.

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