GPS issue

[Guest thedarklord101]

hi guys,

i m having some problems with my SF. i want to use google maps without GPS lock-in and use wi-fi or 3g to show me My Location. But it is always showing me wrong position when used with wi-fi or 3g. Only when i activate GPS then it reflect my actual position.

I haven't had such issue with Nokia 5233 . even though 5233 does not have GPS chip, it used to show me my position correctly in google maps using edge network (A-GPS).

Please tell me what could be the problem.

Please help me.

i m using JF RLS7 & Clockwork Recovery on my Blade.

[Guest thedarklord101]

bump,.......

[Guest oldfella]

are you sure you have AGPS turned on, my settings say "uncheck to improve GPS", which implies the default to on is to not tick the setting

I guess you know it isnt necessarily accurate, particularly in rural areas

[Guest geezer466]

GPS is free why don't you want to use it?

[Guest Swimmerboy]

it used to show me my position correctly in google maps using edge network (A-GPS).

A-GPS (Or assisted GPS) is used to improve the "Time to first fix" of the GPS signal - you have to have GPS turned on to use it.

If you've got GPS turned off, you'll only be using the Cell towers and your location will be accurate to 50-100meters in built up areas or several kilometers if you're far from civilisation. GPS doesn't cost anything to use, and doesn't eat up too much battery life - so I'd say turn it on! ;)

[Guest _dg]

When GPS is turned on from the settings, I notice that I only get the GPS icon on the task bar when a program is actually using GPS. Close the program and the icon disappears

So does this mean that the GPS won't be active, and using battery power unless a program is using it and the icon displayed?

I've also noticed that even when I have "use assisted GPS" ticked, it still takes quite a few minutes to get a GPS lock, even when the phone hase been switched off and back on in the same location. I'm using CoPilot, so is this an issue with the software or the phone?

[Guest Swimmerboy]

So does this mean that the GPS won't be active, and using battery power unless a program is using it and the icon displayed?

Correct - it's only when the icon shows that it's active.

I've also noticed that even when I have "use assisted GPS" ticked, it still takes quite a few minutes to get a GPS lock, even when the phone hase been switched off and back on in the same location. I'm using CoPilot, so is this an issue with the software or the phone?

It normally takes about 30 seconds to get a GPS fix for me (although the cell-towers provide one in just a couple of seconds). If it's taking longer than that then check you've got a clear view to the sky, you're not indoors, no high buildings beside you etc.

[Guest c-m]

Isn't there a problem with GPS and the JellyFish ROMs?

I can't seem to get the built in GPS to get a fix. Stood outside in the open for 10mins the other night and nothing.

connecting to me bluetooth gps receiver is perfect though.

[Guest Swimmerboy]

Isn't there a problem with GPS and the JellyFish ROMs?

I can't seem to get the built in GPS to get a fix. Stood outside in the open for 10mins the other night and nothing.

connecting to me bluetooth gps receiver is perfect though.

Works fine for me, and I've been using the Jellyfish roms from about Release 4 -> current (Release 8). Can't fault it, and have used it on many occasions with the Navigator in the car.

[Guest delight]

No GPS for me either using latest jellyfish release ;) I tried various GPS-apps but none of them could lock on to any satelite.

Edited January 20, 2011 by delight

[Guest Swimmerboy]

No GPS for me either using latest jellyfish release ;) I tried various GPS-apps but none of them could lock on to any satelite.

Just tried again - sitting in the office has me locked onto 4 satellites with GPS, and displaying the correct location on google maps. I've got a UK OLED model - not sure if that makes a difference.

[Guest Phoenix Silver]

No GPS for me either using latest jellyfish release ;) I tried various GPS-apps but none of them could lock on to any satelite.

have you tried to change /system/etc/gps.conf

i have changed mine to this

NTP_SERVER=fr.pool.ntp.org

(replace fr by your country uk us ............)

XTRA_SERVER_1=http://xtra1.gpsonextra.net/xtra.bin

XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin

XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin

# DEBUG LEVELS: 0 - none, 1 - Error, 2 - Warning, 3 - Info

# 4 - Debug, 5 - Verbose

DEBUG_LEVEL = 3

# Intermediate position report, 1=enable, 0=disable

INTERMEDIATE_POS=0

# Accuracy threshold for intermediate positions

# less accurate positions are ignored, 0 for passing all positions

# ACCURACY_THRES=5000

################################

##### AGPS server settings #####

################################

# FOR SUPL SUPPORT, set the following

# SUPL_HOST=supl.host.com or IP

# SUPL_PORT=1234

# FOR C2K PDE SUPPORT, set the following

# C2K_HOST=c2k.pde.com or IP

# C2K_PORT=1234

################################

# EXTRA SETTINGS

################################

SUPL_HOST=supl.google.com

SUPL_PORT=7276

red line are the modifictations

Edited January 20, 2011 by Phoenix Silver

[Guest thedarklord101]

GPS is free why don't you want to use it?

i use it when i m outside. it's just that when i m traveling in train, its difficult to get gps lock and therefore i want to use my 3g instead. I just want to keep my options open in case i don't get gps lock.

[Guest c-m]

have you tried to change /system/etc/gps.conf

i have changed mine to this

NTP_SERVER=fr.pool.ntp.org

(replace fr by your country uk us ............)

XTRA_SERVER_1=http://xtra1.gpsonextra.net/xtra.bin

XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin

XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin

# DEBUG LEVELS: 0 - none, 1 - Error, 2 - Warning, 3 - Info

# 4 - Debug, 5 - Verbose

DEBUG_LEVEL = 3

# Intermediate position report, 1=enable, 0=disable

INTERMEDIATE_POS=0

# Accuracy threshold for intermediate positions

# less accurate positions are ignored, 0 for passing all positions

# ACCURACY_THRES=5000

################################

##### AGPS server settings #####

################################

# FOR SUPL SUPPORT, set the following

# SUPL_HOST=supl.host.com or IP

# SUPL_PORT=1234

# FOR C2K PDE SUPPORT, set the following

# C2K_HOST=c2k.pde.com or IP

# C2K_PORT=1234

################################

# EXTRA SETTINGS

################################

SUPL_HOST=supl.google.com

SUPL_PORT=7276

red line are the modifictations

What does changing the gps.conf do? And why does it need changing in the first place?

[Guest deepmenace]

my jellyfish gps is bizarre - it seems to work fine sometimes....

now, at work, it literally jumps around town every few minutes with what looks like cell-level accuracy.

its a shame - there's nothing quite like unreliable gps to make you wanna hurl a device into a nearby wall! :-)

[Guest Azurren]

GPS on my JapJelly is dismal.. It will get a lock after about 5mins though despite using over 10 satellites ;)

Having A-GPS off helps

[Guest c-m]

Tried again walking home from work and still nothing. Does anyone have a good reliable gps.conf for a UK OLED model they'd like to share?

I'm using JJ7

[Guest cenwulf]

are you sure you have AGPS turned on, my settings say "uncheck to improve GPS", which implies the default to on is to not tick the setting

On my stock ROM, it says "uncheck to reduce network usage" i.e. the opposite of yours. Has the setting actually been reversed, rather than the screen text?

But the AGPS is separate to the wireless network location setting that the OP wants to use.

Just checking the JJ RLS8 thread -

Disabled AGPS by default. Not sure it makes a difference to turn it on and it seems to provoke some "Connection cannot be made" if enabled.

[Guest cacoe]

Firstly, what sort of edits should I be changing to that file for UK servers?

Also, are the servers in this file strictly for increasing mobile network location accuracy? Does making it more specific to your current locale increase the accuracy of GPS too?

[Guest Swimmerboy]

Firstly, what sort of edits should I be changing to that file for UK servers?

Also, are the servers in this file strictly for increasing mobile network location accuracy? Does making it more specific to your current locale increase the accuracy of GPS too?

I may be wrong, but don't think you can use it to improve mobile network location accuracy. A-GPS stands for Assisted-GPS.

The way I understand it - it either uses an 'Almanac' so that it can predict satellite positions at a given date/time which improves GPS lock-on speed as it doesn't have to spend so long working out where they are in the sky. This is what the servers are used for.

Alternatively, it can use mobile networks to determine roughly where you are so that again when the GPS locks on it takes less time as it already knows roughly where you are.

Neither of these improves the accuracy, just means it takes less time to lock on.

[Guest paulus22]

Sorry to bump this thread, but I have long gps fix times even when out in the open country. I would love to try the edit of gps.conf - but don't know the correct route to do this. If I could access the file on the PC I would use notepad, but I can only see the sd card on the PC. So how do I go about accessing/editing the gps.conf file?

[Guest Yuccaman]

Sorry to bump this thread, but I have long gps fix times even when out in the open country. I would love to try the edit of gps.conf - but don't know the correct route to do this. If I could access the file on the PC I would use notepad, but I can only see the sd card on the PC. So how do I go about accessing/editing the gps.conf file?

The way I did it was using a couple of Market Apps:

- AntTek Explorer, which allows you to browse the system and data directories on the phone, assuming you are ROOTed.

- Remount, which allows you to change the System partition from Read Only to Read / Write (and back again).

I found that I couldn't edit the file from within the system/etc directory location within AntTek, so copied it to my SD card, edited from there and saved it, then copied back to the system/etc directory all with AntTek.

I'm sure there are other ways and other apps, but that worked for me.

Edited June 6, 2011 by Yuccaman

[Guest paulus22]

The way I did it was using a couple of Market Apps:

- AntTek Explorer, which allows you to browse the system and data directories on the phone, assuming you are ROOTed.

- Remount, which allows you to change the System partition from Read Only to Read / Write (and back again).

I found that I couldn't edit the file from within the system/etc directory location within AntTek, so copied it to my SD card, edited from there and saved it, then copied back to the system/etc directory all with AntTek.

I'm sure there are other ways and other apps, but that worked for me.

Thanks for that. I use ES File Explorer, so will check whether that will do the same (tomorrow) and download AntTek. See if I can get the job done that way.

[Guest paulus22]

Remount "says" it is working - asks for superuser permission then says system is switched to rw. ES Files Explorer copies to sd then edits successfully, however when I copy back to /system/edit I get a dialogue about do IU want to replace existing file etc. reply yes, then message "copy failed" . . . . . . Any ideas? I assume I am rooted (using Japanese Jellyfish) and superuse priviledges were granted.

[Guest Skip Tracer]

Sorry to bump this thread, but I have long gps fix times even when out in the open country. I would love to try the edit of gps.conf - but don't know the correct route to do this. If I could access the file on the PC I would use notepad, but I can only see the sd card on the PC. So how do I go about accessing/editing the gps.conf file?

This seems to be a problem that has suddenly pop up from nowhere.

I have the same problem with long capture times but it appears not to be just affecting Jelly-Fish.

I used to get a sat fix within seconds with JJF r9 up until a few weeks ago. The only thing I can see that has changed is that (if I remember right) the app GPS Status was updated a few weeks back.

http://android.modaco.com/content/zte-blad...s-fix-problems/

Chris