I was trying to look around but could not find an answer.
I am on the Sprint stock ROM.
The device comes with AGPS disabled. It can be activated by downloading cabs from this forum as well as registry hacks and Advanced config tool from XDA forum.
But can I activate it from the stock software, without any hack or downloads? The devices I used before (BB, iphone) would enable AGPS by default, so that even if there is no satellite signal (indoors), you can still get approximate location from the cell towers.
I cannot figure it out for the HTC. Why do they disable it by default?
Any ideas?
Thanks.
Related
Is this function in our Kaiser? I've enable it from the Kaiser Tweak but today i tested it when i was in a tunnel....it did not work at all and the tunnel was 4 KM long....it should have had enough time to get a fix if it was working.
Is the Assisted GPS what i think it is?
How do you expect to get a GPS fix in a tunnel???
AGPS is basically what the QuickGPS app. does: it downloads sat. data (satellite locations) via a network connection from a server, so that TTF (time to fix) is reduced, since the device doesn´t have to download above data from the satellites themselves - which is slow....
Hope I was not too unclear, doing a search will give you much more and detailed info about how GPS works......and it doesn´t in tunnles....
As mentioned above, the AGPS uses server information (via cellular network) to locate the GPS satellite for a quicker fix and hash conditions. For a 4KM tunnel, I'm sure that your phone would have lost both GPS and network signal.
michi123 said:
How do you expect to get a GPS fix in a tunnel???
AGPS is basically what the QuickGPS app. does: it downloads sat. data (satellite locations) via a network connection from a server, so that TTF (time to fix) is reduced, since the device doesn´t have to download above data from the satellites themselves - which is slow....
Hope I was not too unclear, doing a search will give you much more and detailed info about how GPS works......and it doesn´t in tunnles....
Click to expand...
Click to collapse
Thats correct, there are som applications that tries to estimate where in the tunnel you are when the fix is gone. But I suppose this is a function of the application and not the GPS hardware
I stand partially corrected........ http://en.wikipedia.org/wiki/Assisted_GPS
michi123 said:
How do you expect to get a GPS fix in a tunnel???
AGPS is basically what the QuickGPS app. does: it downloads sat. data (satellite locations) via a network connection from a server, so that TTF (time to fix) is reduced, since the device doesn´t have to download above data from the satellites themselves - which is slow....
Hope I was not too unclear, doing a search will give you much more and detailed info about how GPS works......and it doesn´t in tunnles....
Click to expand...
Click to collapse
Which is why the title is "Assisted GPS".....I've done some search on AGPS and it's suppose to use the cellular to still get a fix when in the tunnel. Well....i read it sometime ago way before Kaiser was out and this was actually one of it's talked about feature in Kaiser. Using the Kaiser Tweak, one can enable this feature but i've tested it today in the tunnel with strong cellular signal, the GPS is dead until i came out of the tunnel.
I guess it also has to be supported by the particular program. Many TomTom PNAs have a dead reckoning mode which shows your position in a tunnel based on your "entry" speed for about 30 seconds, than the position freezes in the tunnel. Now that of course has nothing to do with AGPS, but it´s a way of overcoming temporary signal loss.
Best way would be to have an inertial sensor built into the phone like in fix-mounted car-navs......but then again, that would be overkill....
You have to remember that the Assisted GPS (Cellular network mode) relies on the fact the network itself supports the feature. I know most in the UK don't have it turned on in general use. They only allow it to be used by emergency services and the likes.
Perhaps that's the same in your country?
the_ape said:
You have to remember that the Assisted GPS (Cellular network mode) relies on the fact the network itself supports the feature. I know most in the UK don't have it turned on in general use. They only allow it to be used by emergency services and the likes.
Perhaps that's the same in your country?
Click to expand...
Click to collapse
Probably so.....oh well....it was worth a try
Thanks guys for the input.
So the internal GPS is one of the primary reasons I wanted the Kaiser, but when it comes down to it, it's the rare occasion that I actually use the GPS for much, especially stuff outside of basic "where am I" and "how do I get there" with gmaps...
Even when using quickgps, sometimes when I need to know where I am in relation to somewhere I'm going, quickly, it can still take way too long to pick up sat signals. I was in the car with a friend the other night (this is a guy that I constantly harass for having an iPhone (and he harasses me for the opposite)) and when we both pulled out our phones with gmaps, he knew right where we were, instantly, while all I could do was sit there and try my hardest to not make excuses about why I wasn't picking up a sat signal quickly.
Unless I'm using other GPS software, for my uses with gmaps, I'd really rather just be able to use the triangulation that non-GPS phones use. I tried turning off the GPS (GPS program port: None) in settings, but gmaps just searches anyway, not finding any hardware and/or sats.
Is what I want to do possible? I'm sure I'll get several responses on how I can speed up my sat signal pickup, which is NOT what I'm looking for. I just want to be able to use gmaps "My Location" without using the internal GPS, thus saving battery as well as getting a quicker pickup on where I am...
TIA
Geo
Yes, what your asking for is just using "My Location" without GPS. I use "My Location" all the time it does not activate my GPS. Here is an article that confirms "My Location" does not use GPS.
http://gigaom.com/2007/11/28/google-my-location/
-McMex
mcmexican said:
Yes, what your asking for is just using "My Location" without GPS. I use "My Location" all the time it does not activate my GPS. Here is an article that confirms "My Location" does not use GPS.
http://gigaom.com/2007/11/28/google-my-location/
-McMex
Click to expand...
Click to collapse
I know that My Location can be used without GPS, I'm just wondering if it's possible on a Kaiser. Assuming you have a Kaiser device, what and how do you have it set up so that gmaps doesn't activate/use GPS, but instead uses the cell towers?
On my device using GoogleMaps 2.0.0.11 the option for My Location works separately from Use GPS. The location (within 1.7KM) is picked up within seconds, GPS does take longer but is accurate to individual rooms within my home. The Cell based locator is obviously dependent on your Carriers Cell towers and I know in the past I have been unable to get a location over HSDPA or 3G but GPRS worked. Now though on TMobile UK at home I can get my cell based location using any non Wifi data connection.
Smack! Smack!
wizzzard said:
On my device using GoogleMaps 2.0.0.11 the option for My Location works separately from Use GPS. The location (within 1.7KM) is picked up within seconds, GPS does take longer but is accurate to individual rooms within my home. The Cell based locator is obviously dependent on your Carriers Cell towers and I know in the past I have been unable to get a location over HSDPA or 3G but GPRS worked. Now though on TMobile UK at home I can get my cell based location using any non Wifi data connection.
Click to expand...
Click to collapse
Ah, my apologies. Turns out I was not using the latest version. I've installed v2 with separate GPS/My Location, and My Location without GPS works great!
Thanks to all.
bananachunks said:
I know that My Location can be used without GPS, I'm just wondering if it's possible on a Kaiser. Assuming you have a Kaiser device, what and how do you have it set up so that gmaps doesn't activate/use GPS, but instead uses the cell towers?
Click to expand...
Click to collapse
By default My Location DOES NOT use GPS. You have to enable GPS from the menu.
Yes I have a Kaiser (actually 2at&t Tilts) and use Google Maps (v2.0.0.12)
kyphur said:
By default My Location DOES NOT use GPS. You have to enable GPS from the menu.
Yes I have a Kaiser (actually 2at&t Tilts) and use Google Maps (v2.0.0.12)
Click to expand...
Click to collapse
Yes, I found this out by installing the latest Google Maps (after my last ROM flash, I installed gmaps from a cab I already had on sd, which was apparently not a recent version).
Thank you - I love the fact that I can use gmaps without GPS now for the quick "where am I" without having to wait, but can still use GPS when I feel like it, and also still have it enabled in Settings for use in other GPS programs.
Thanks again
Since flashing a new radio, my GPS doesn't work. I've tried 1.17.25.09 and 1.13.25.24, but HTC GPS tool won't find any satellites.
Has anyone got any ideas? I need my GPS tomorrow
Cheers
unknownserv said:
Since flashing a new radio, my GPS doesn't work. I've tried 1.17.25.09 and 1.13.25.24, but HTC GPS tool won't find any satellites.
Has anyone got any ideas? I need my GPS tomorrow
Cheers
Click to expand...
Click to collapse
Have you updated your PRL?
Are you using QuickGPS tool and/or assisted GPS?
PRL? I'm using QuickGPS with 1.08.25.08 now, it gets a fix, but does take a while.
unknownserv said:
PRL? I'm using QuickGPS with 1.08.25.08 now, it gets a fix, but does take a while.
Click to expand...
Click to collapse
PRL stands for preferred roaming list but I am on a cdma network so if you are gsm I don't know if you have those. Basically, to ensure the strongest signal reception and transmission prl updates are issued and a device is updated to the most current list. If you change radio's, sometimes you have to update/change prl's to get a better signal.
Have you tried to enable Assisted GPS? You can do this with an app like Schaps Advanced Config. Enable the log file to log at least 32kb of data for better gps performance.
I unlocked my AT&T Captivate to work with UK sim cards, and it works great. Unfortunately, the GPS doesn't seem to work at all over here. There's enough problems as it is with the GPS, but it literally picks up 0 satellites. It doesn't seem to be functioning at all!
Any suggestions?
you need to change the supl server in lds test mode, in jupiter.xml and in conf.gps(the last one might be wrong) just use a gps fix like da_g's or or plumb_bob's with google/global settings and make sure lbs test mode is set to match the other files.
plumb_bob's fix uses msbased mode for agps others default to stand alone, msbased agps will likely help it pick up those satalites. but remember you cant simply set lbs test mode and have it work all the time you really need to use plumb_bob's update or make similar edits to your configuration files. for plumb bob's fix just follow the first post.
i personally have great sucsess with da_g's control plane version and i set the lbs supl/control plane menu to;
custom config
supl.google.com
7276
off
control plane
another thing to consider is the modem.bin. you need one that has the 900 band correct? maybe try the armani one or i think kp1 from the i9088 has all the bands but needs to be set to 900 manually. it also has great gps reception.
Dani897 said:
you need to change the supl server in lds test mode, in jupiter.xml and in conf.gps(the last one might be wrong) just use a gps fix like da_g's or or plumb_bob's with google/global settings and make sure lbs test mode is set to match the other files.
plumb_bob's fix uses msbased mode for agps others default to stand alone, msbased agps will likely help it pick up those satalites. but remember you cant simply set lbs test mode and have it work all the time you really need to use plumb_bob's update or make similar edits to your configuration files. for plumb bob's fix just follow the first post.
i personally have great sucsess with da_g's control plane version and i set the lbs supl/control plane menu to;
custom config
supl.google.com
7276
off
control plane
another thing to consider is the modem.bin. you need one that has the 900 band correct? maybe try the armani one or i think kp1 from the i9088 has all the bands but needs to be set to 900 manually. it also has great gps reception.
Click to expand...
Click to collapse
Thanks for all the tips I'll be trying them out shortly. One thing though is that I want to use the GPS, not the aGPS, because I don't want to use data while I'm over here (it's expensive). I've cached maps and wish to use the GPS to navigate while I'm out and about. Will these changes still help me?
Thanks!
Just a quick bump. Will da_G's fix work without any data connection?
Thanks!
EDIT: well it doesn't seem to no. The only way I can get a GPS lock here in London is with 3g data enabled. That is very unfortunate and annoying, I was hoping to use maps offline!
First of all, yes I searched the forum, and google, and tho I might have missed something, I think I've tried most of the reccommendations out there (short of a custom rom because those are in short demand for the sprint tab.)
I did a wipe / odin to 24, updated to 28, then 2.3.4. Gps still sucked, so I flashed rooted 2.3.4 and tried 3 or 4 gps "fix" apps for this thing, none of which have made any difference. I can get gps but it takes FOREVER, usually around 5 minutes. Often it will find 6 or more satellites too, but just sit there and not lock on or whatever to any, then randomly it works. I've tried every combo of toggling gps, soft reset, and hard reset.
In texas I had the same problem on froyo, now I'm in Costa Rica... I'm assuming since gps stands for GLOBAL positioning sys that where I am shouldn't affect it. But its just SO darn slow ilby the time it starts working its useless.
and I test it outside on sunny days with open sky, so I know that's not the culprit. Nor ia it in a case when I try
Any thoughts or ideas at all would be MUCH appriciated as I really need to start using my tab for mapping.
Thanks!!!
Sent from my SPH-P100 using XDA App
I think you're doing it wrong son. Try these settings. In wireless and network, mobile networks, uncheck 3g data. In location and security, check both use wireless networks and use GPS satellites. I assume you are using wireless tether from phone to give tab internet. Turn wifi on obviously. You do have the modded wpa_supplicant file for ad hoc for the tab right? I tried timing myself after doing all those settings I said and how long with GPS tools app and Google maps to get a lock and it was immediate. This is coming from never have using the GPS since the complete back to stock with ea24 all the way up to rooted gb.
People are saying to put the tab into airplane mode. If you want to use the GPS or things like weather bug or radar now, you at least need to have location from network enabled for it to assist in finding your location. You're not pulling data from the tower, the tower is helping the apply to locate where you're at, along with the GPS. GPS alone and wifi didn't work for me. When I enabled the settings I told you about, the GPS apps immediately came to life and worked great.
oscarthegrouch said:
I think you're doing it wrong son. Try these settings. In wireless and network, mobile networks, uncheck 3g data. In location and security, check both use wireless networks and use GPS satellites. I assume you are using wireless tether from phone to give tab internet. Turn wifi on obviously. You do have the modded wpa_supplicant file for ad hoc for the tab right? I tried timing myself after doing all those settings I said and how long with GPS tools app and Google maps to get a lock and it was immediate. This is coming from never have using the GPS since the complete back to stock with ea24 all the way up to rooted gb.
People are saying to put the tab into airplane mode. If you want to use the GPS or things like weather bug or radar now, you at least need to have location from network enabled for it to assist in finding your location. You're not pulling data from the tower, the tower is helping the apply to locate where you're at, along with the GPS. GPS alone and wifi didn't work for me. When I enabled the settings I told you about, the GPS apps immediately came to life and worked great.
Click to expand...
Click to collapse
I'm in costa rica with a cdma sprint tab, so 3g is always disabled, and because there is no service I disabled network location because I figured it couldn't get that data with no signal, and my location kept going to some random location around the world. And when I need gps I'm out far away from wifi hotspots too, so not worried about that setting I don't think.
Wifi hotspots only, no tethering, and I don't have the wpa supplicant file, but again no tethering so I'm assuming that is not nessicary.
And in Airplane mode it never gets a lock. At least on froyo it never would. I would turn airplane on then activate gps and it never ever found a satellite. I researched it and I thought in airplane the gps couldn't function until airplane mode was disabled again, even if gps toggled...
I appriciate your input, but I don't think its going to work given my circumstances.
Thanks!
Sent from my SPH-P100 using XDA App