Recent, convert from Android. I got the LG Quantum from ATT. On specs it says GPS and A-GPS but it doesn't have option to turn on GPS in settings only location on and off. Anyone knows how I can figure out whether the phone actually comes with a standalone GPS chip or A-GPS only? It's important cause I am waiting for 3rd party navigation apps to come out.
it's all managed under "location". it's both GPS and A-GPS. It uses A-GPS for quick general positioning, and the GPS to fix the lock on. so when you turn on/off location, both get turned on/off with it.
Thx for the reply. I guess the real question is if all Windows Phone 7 phones have a dedicated GPS chip not just using cell phone tower triangulation for location calculation (AKA A-GPS).
I think so. GPS chip was a requirement for WP7 handsets. And the accuracy of my Focus makes me think it does have a real chip.
Yes, all Windows Phone 7 devices has a real dedicated GPS chip inside. Although, A-GPS is used as an assist. Actually, on LG devices you can set the A-GPS to use 2G, 3G, or both, and what purpose each would play. I think this is why the tracking and positioning on WP7 devices are faster and more accurate than most other phones.
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Does anybody know the reason why the assisted gps is disabled by default?? And how can it be enable. When I enable with advanced configuration it is not working.
My previous phone was a nokia e71, and there was the a-gps working perfect. I used sygic McGuider, and there was an option to use a-gps. When that option was checked you got a fixed in the middle of your house. That worked perfect. You got immediately a fix, almost instantanious.
Why do you think it is disabled?
On my TP2 I go to 'All Programs > Quick GPS' and it tells me when it last downloaded info, how long it is valid for and I can configure settings under Menu.
Quick gps is something else than assisted gps. Assisted gps uses network triangulation to support the gps position. If there are some obstacles that block some of the gps signals, and the network coverage is still okay then your signal is still okay with assisted gps.
I alse read somewhere that some costs are charged when you use a-gps, but I have never notioned that with my nokia e71. Even in a foreign country no costs were charged for using a-gps.
esseff said:
Why do you think it is disabled?
On my TP2 I go to 'All Programs > Quick GPS' and it tells me when it last downloaded info, how long it is valid for and I can configure settings under Menu.
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you can use the rhodium settings tool
it is "must to have". A.
This might be a noob question, but I have a question regarding the GPS.
Does it require data to work? Or does it require data to work for certain GPS features?
I am going to Europe and need to decide if I will need to take my N85 unlocked and try and get a local SIM card there. I want to geotag my photos but don't know if you can since the EVO has no international roaming capabilities.
Does Geotagging (or any other GPS feature) require data to work or can some GPS functions work by connecting directly to the satellites?
pekosROB said:
This might be a noob question, but I have a question regarding the GPS.
Does it require data to work? Or does it require data to work for certain GPS features?
I am going to Europe and need to decide if I will need to take my N85 unlocked and try and get a local SIM card there. I want to geotag my photos but don't know if you can since the EVO has no international roaming capabilities.
Does Geotagging (or any other GPS feature) require data to work or can some GPS functions work by connecting directly to the satellites?
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GPS will require data, especially if you plan on using some form of Geotagging.
Definitely take your N85 unlocked and have a SIM card -- leave your EVO at home, since the EVO is CDMA based and almost all networks in Europe are GSM based, your EVO won't be doing any calling/texting -- that is unless you want to get a huge ass bill for roaming every second?
I'm not 100% positive, but the way it works is that the GPS on the phone will try to connect to your carriers tower first and get all the information it needs from there... then any information it can't retrieve or has to upload (maps, geotag, etc) it'll use a universal satellites. These satellites are the ones that your phone connects to if it has to be tracked if you get lost (via 911) and are also the same ones Google probably uses for Maps, Navigation, etc -- since they provide a large amount of information.
Hope that helps.
pseudoremora said:
GPS will require data, especially if you plan on using some form of Geotagging.
Definitely take your N85 unlocked and have a SIM card -- leave your EVO at home, since the EVO is CDMA based and almost all networks in Europe are GSM based, your EVO won't be doing any calling/texting -- that is unless you want to get a huge ass bill for roaming every second?
I'm not 100% positive, but the way it works is that the GPS on the phone will try to connect to your carriers tower first and get all the information it needs from there... then any information it can't retrieve or has to upload (maps, geotag, etc) it'll use a universal satellites. These satellites are the ones that your phone connects to if it has to be tracked if you get lost (via 911) and are also the same ones Google probably uses for Maps, Navigation, etc -- since they provide a large amount of information.
Hope that helps.
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Above information on GPS is wrong, I am not sure where to start to correct it. Lets not, and simply respond to the original question:
GPS is a global network, and works without any data. In fact a GPS device is receive only device, so it cannot even send. If you have a GPS device, it will work all over the world, though it may take a while in clear sky to get a cold fix for the first time after you crossed the Atlantic.
There is something called AGPS or assisted-GPS, which does use data by first requesting a rough fix from the phone network as well as the current position of all the GPS sats, which will speed up the first fix of the GPS a lot, but that is not needed per se, so if you have no phone signal, or no data roaming, GPS still works, just the first fix may take a bit longer.
Mind you, some phones have a broken AGPS implementation, which behaves strange on some phone networks, so you may want to configure it not to even try to use AGPS when abroad. Have it fall back to regular GPS. Then there will be no roaming or attempted roaming on behave of the GPS. GPS will never provide a (navigation) map, it will only ever give you a position, but for tagging, that is all you need.
As to your specific phones, I do not know the EVO specifically, but assuming Sprint did not put in some program to completely bock the phone when out of its network, since it is Android it will simply let you make pictures and GPS tag them without any network.
You do want to bring your Nokia though if you want to call people, Europe is indeed close to 100% GSM based on the 900 and 1800 Mhz frequencies.
cybermaus said:
Above information on GPS is wrong, I am not sure where to start to correct it. Lets not, and simply respond to the original question:
GPS is a global network, and works without any data. In fact a GPS device is receive only device, so it cannot even send. If you have a GPS device, it will work all over the world, though it may take a while in clear sky to get a cold fix for the first time after you crossed the Atlantic.
There is something called AGPS or assisted-GPS, which does use data by first requesting a rough fix from the phone network as well as the current position of all the GPS sats, which will speed up the first fix of the GPS a lot, but that is not needed per se, so if you have no phone signal, or no data roaming, GPS still works, just the first fix may take a bit longer.
Mind you, some phones have a broken AGPS implementation, which behaves strange on some phone networks, so you may want to configure it not to even try to use AGPS when abroad. Have it fall back to regular GPS. Then there will be no roaming or attempted roaming on behave of the GPS. GPS will never provide a (navigation) map, it will only ever give you a position, but for tagging, that is all you need.
As to your specific phones, I do not know the EVO specifically, but assuming Sprint did not put in some program to completely bock the phone when out of its network, since it is Android it will simply let you make pictures and GPS tag them without any network.
You do want to bring your Nokia though if you want to call people, Europe is indeed close to 100% GSM based on the 900 and 1800 Mhz frequencies.
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I figured I was wrong, I stand corrected.
Hey,
I have some Q's on the topic GPS & A-GPS, coz im gettin kinda confused over these sayings... What is the exact difference on GPS ( f.ex. Car GPS) and A-GPS (Assisted GPS)? The reason why im asking is coz on my Touch Diamond i have GPS: GPS & A-GPS-Ready nd my Desire has A-GPS.
What exactly am i missing?
A quick google would have sufficed.
http://www.wmexperts.com/articles/gps_vs_agps_a_quick_tutorial.html
nabiladeeb said:
A quick google would have sufficed.
http://www.wmexperts.com/articles/gps_vs_agps_a_quick_tutorial.html
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Well that article actually gave me some nice info on the topic, but even though im still a bit confused with the A-GPS, coz as it says in the article :
But when you use assisted GPS this whole process is much faster. Very often cellular network towers have GPS receivers (or a base station nearby) and those receivers are constantly pulling down satellite information and computing the data. This data is then passed on to the cellular phone (when requested) and acts like a “cheat” since the relevant satellites to your location are already identified and all that GPS computations is handled by 3rd party computers.
So the A-GPS is pulling data from the network, and this must mean you need some sort of data subscribtion, if you dont wanna get screwed by your carrier, or am i mistaking?
During a recent visit to Korea, I had 0 luck getting a GPS lock, even after using FasterFix to set GPS pools to Korea and Asia, and clearing aGPS each time with GPS Status. I tried stock EL29, stock ICS leaks, AOKP, and CM9. My Toshiba Thrive, however, was able to get a lock without a problem, and my og EVO was always able to get a lock. I can get a lock in airplane mode just fine in the states. Is the E4GT unable to acquire GPS locks outside of the States or is it just Korea? What's everyone else's experience with using GPS outside of the states?
If you had airplane mode on then that is most likely the problem. I experienced the same problem in the UK and New Zealand, for some reason it won't lock in airplane mode. I had limited success with getting a lock with airplane mode off and then turning it back on again, but the only surefire way was to have airplane mode disabled completely. Only downside is a bit higher battery drain as it looks for a non-existent CDMA signal.
perhaps that was the culprit. i always kept it in airplane mode but left wifi and gps turned on. that blows. my thrive and og evo have always been left in airplane mode, so i wonder why samsung doesn't like airplane mode.
I think it is a bug in their radio firmware or system drivers.
I think it is due to either limitation or lazy coding with their use of separate older qualcomm modem/radio subsystem and their own CPU.
I believe if they had more recent pure qualcomm solution and started with qualcomm source base, GPS would work like other phones.
Probably GS3 will have it fixed since it is a pure qualcomm solution.
I was in Korea at the end of March using the EL19 modem and I had no issue what so ever getting an accurate GPS lock. I was able to rome the streets and hillsides only using my phone GPS.
I was activated for voice and data over SK Telecom though. Hope this helps.
The bug we are talking about is GPS won't work with airplane mode enabled.
Why is that considered a bug? I thought the idea behind airplane mode was to shut off all radios that send or receive a signal. No?
Imadroider said:
Why is that considered a bug? I thought the idea behind airplane mode was to shut off all radios that send or receive a signal. No?
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It is to disable all radios that send.
A passive GPS receiver is not going to affect anything so there is no reason to shut it off.
Other phones' GPS work fine with Airplane mode enabled.
Also user has explicitly enabled GPS in Airplane Mode.
Gotcha. Thanks for the clarification. On a side note, without following all the other threads, are you getting out a fe22 one-click tonight? I wouldn't miss it for the world.
Imadroider said:
Gotcha. Thanks for the clarification. On a side note, without following all the other threads, are you getting out a fe22 one-click tonight? I wouldn't miss it for the world.
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http://forum.xda-developers.com/showthread.php?t=1694695
He's always one step ahead of us.
I used my gps hiking today with cardiotrainer in an area with no signal, airplane mode on. Worked perfectly. Was on stock FE07 sfhub one click.
Sent from my SPH-D710 using xda premium
Was it outside the states? i'm able to use my gps in airplane mode when im in the states. i guess i should've specified that in the first post.
Once you get GPS lock, you can usually turn on Airplane mode and GPS will continue to work. It is just that initial lock where it wants to contact A-GPS servers where it often won't get lock unless you have signal. In this situation you should be able to turn on Airplane mode and have the GPS work in total standalone mode.
that makes sense, but if it only needs to contact those agps servers then a wifi connection should suffice, right?
cnstarz said:
that makes sense, but if it only needs to contact those agps servers then a wifi connection should suffice, right?
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I don't think these are the Google location servers. I believe they are the snaptrack tower-based agps servers (ie you can't connect to them from arbitrary IP addresses anywhere in the world)
If properly configured (by the manufacturer) these phones are supposed to be able to operate in complete standalone GPS mode. The best time to configure that would be in Airplane mode, where it doesn't make sense to do A-GPS. That's how other phones have it configured.
BTW I saw this same type of bug on Palm Treo 800w
do you think there's anyway to port those configurations to the e4gt?
I think there is a bug in the radio. I've configured NVRAM to specify standalone mode and I still can't get it to work in standalone mode. At first I thought I got it to work, but it was only because my USB cable was connected during the reboot. This somehow left the GPS running even after reboot, tricking me into thinking it was working in airplane/standalone mode.
Back in the WinMo days, there were registry entries where we could configure standalone and various assisted modes, but we found some radios just ignored your settings and some followed them.
Many manufacturers have almost zero interest in fixing GPS bugs. If Google maps brings up your location under some situations, they consider GPS working.
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Hi I recently bought an m8 on ebay. I noticed that the gps doesnt lock on even though the location settings are set to high accuracy. As of now there is no service on the phone. When i connect to wifi it gets my location through A-GPS but without wifi it doesnt track my location even with offline maps. I tried calibrating my compass using the 'GPS Status' app, but it doesnt seem to work. Does anyone know if this is a software problem or hardware? can i replace the gps in the phone?
Thanks in advance for your help.
On the GPS Status app, do you see satellites being locked on? On the circular display, you should see dots, and bar graph below will show signal strength. You can typically lock onto several satellites very quickly, unless there is a hardware issue or in a poor location (sky is blocked).