Những thủ thuật tăng cường tốc độ bắt GPS

Đăng lúc 15:01 bởi nguyentrungkien0795@gmail.com

Trên một số dòng sản phẩm smartphone/tablet, thì thời gian bắt GPS rất lâu, như một số dòng Qualcomm hay Mediatek cũ, thì có các thủ thuật sau cải thiện đáng kể vấn đề GPS:

1) Hiệu chỉnh file gps.conf

Ok, here comes another trick. Open your gps.conf file (inside system\etc):
It will looks like:
NTP_SERVER=europe.pool.ntp.org
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
SUPL_HOST=supl.google.com
SUPL_PORT=7276

Now change it to:
NTP_SERVER=0.pl.pool.ntp.org
NTP_SERVER=1.pl.pool.ntp.org
NTP_SERVER=2.pl.pool.ntp.org
NTP_SERVER=3.pl.pool.ntp.org
NTP_SERVER=0.europe.pool.ntp.org
NTP_SERVER=1.europe.pool.ntp.org
NTP_SERVER=2.europe.pool.ntp.org
NTP_SERVER=3.europe.pool.ntp.org
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
SUPL_HOST=supl.google.com
SUPL_PORT=7276

Remembering to change "pl" in first 3 servers to the letters of your country. Here is the list:

Austria — at.pool.ntp.org (45)
Switzerland — ch.pool.ntp.org (59)
Germany — de.pool.ntp.org (302)
Denmark — dk.pool.ntp.org (37)
Spain — es.pool.ntp.org (24)
France — fr.pool.ntp.org (147)
Italy — it.pool.ntp.org (24)
Luxembourg — lu.pool.ntp.org (8)
Netherlands — nl.pool.ntp.org (121)
Norway — no.pool.ntp.org (22)
Poland — pl.pool.ntp.org (35)
Sweden — se.pool.ntp.org (30)
Slovenia — si.pool.ntp.org (21)
United Kingdom — uk.pool.ntp.org (137)
Finland — fi.pool.ntp.org (37)
Ireland — ie.pool.ntp.org (18)
Russian Federation — ru.pool.ntp.org (80)
Belgium — be.pool.ntp.org (19)
Portugal — pt.pool.ntp.org (9)
Greece — gr.pool.ntp.org (6)
Hungary — hu.pool.ntp.org (41)
Bulgaria — bg.pool.ntp.org (25)
Romania — ro.pool.ntp.org (22)
Czech Republic — cz.pool.ntp.org (25)
Yugoslavia — yu.pool.ntp.org (4)
Estonia — ee.pool.ntp.org (4)
Belarus — by.pool.ntp.org (9)
Slovakia — sk.pool.ntp.org (6)
South Africa - za.pool.ntp.org (9)
Ukraine — ua.pool.ntp.org (50)
Lithuania — lt.pool.ntp.org (2)
Macedonia — mk.pool.ntp.org (4)
Moldova — md.pool.ntp.org (6)
Latvia — lv.pool.ntp.org (11)
Croatia — hr.pool.ntp.org (4)
Republic of Serbia — rs.pool.ntp.org (7)
Bosnia and Herzegovina — ba.pool.ntp.org (1)

http://forum.xda-developers.com/showpost.php?p=12185980&postcount=20784

Cách 2:

People with GPS issues, try two things:
A1) Go to Settings -> Location and check "Integrate Google Navigation"
A2) Enable "Use GPS satellites"
A3) Reboot and try with Google Maps

-----------------------------------------

B1) Download FasterFix and chang the ntp to: it.pool.ntp.org ( "it" for me in italy, other for you, see list below )
B2) Download GPS Status from market.
B3) Clean Chache/data on Google maps.
B4) Enable GPS
B5) Reboot into recovery and wipe dalvik cache and reboot.
B6) Open "GPS Status" and wait for a satellite Fix
B7) Open maps and it works xD

Optional
B8) uninstall fasterfix and gps status
B9) Go to Settings -> Location and check "Integrate Google Navigation"

Let me know

-I tried many times and the issue seems to be caused by the "Integrate Google Navigation" not enabled..-
Austria — at.pool.ntp.org
Switzerland — ch.pool.ntp.org
Germany — de.pool.ntp.org
Denmark — dk.pool.ntp.org
Spain — es.pool.ntp.org
France — fr.pool.ntp.org
Italy — it.pool.ntp.org
Luxembourg — lu.pool.ntp.org
Netherlands — nl.pool.ntp.org
Norway — no.pool.ntp.org
Poland — pl.pool.ntp.org
Sweden — se.pool.ntp.org
Slovenia — si.pool.ntp.org
United Kingdom — uk.pool.ntp.org
Finland — fi.pool.ntp.org
Ireland — ie.pool.ntp.org
Russian Federation — ru.pool.ntp.org
Belgium — be.pool.ntp.org
Portugal — pt.pool.ntp.org
Greece — gr.pool.ntp.org
Hungary — hu.pool.ntp.org
Bulgaria — bg.pool.ntp.org
Romania — ro.pool.ntp.org
Czech Republic — cz.pool.ntp.org
Yugoslavia — yu.pool.ntp.org
Estonia — ee.pool.ntp.org
Belarus — by.pool.ntp.org
Slovakia — sk.pool.ntp.org
South Africa - za.pool.ntp.org
Ukraine — ua.pool.ntp.org
Lithuania — lt.pool.ntp.org
Macedonia — mk.pool.ntp.org
Moldova — md.pool.ntp.org
Latvia — lv.pool.ntp.org
Croatia — hr.pool.ntp.org
Republic of Serbia — rs.pool.ntp.org
Bosnia and Herzegovina — ba.pool.ntp.org
http://forum.xda-developers.com/showpost.php?p=12209959&postcount=20921

Cách 3:

Cách 4: DHD GPS issue fixed, 100% working
http://forum.xda-developers.com/showthread.php?t=1101066

Cách 5: https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2

Cách 6: Speed Up Satelite Fix for GPS on Android

Guys,

I decided to write this because a lot of us here still facing GPS issue on their device. I almost give up on my HTC Desire HD because of the GPS problem. After I find this trick, now I realized that HTC devices have one of the most brilliant GPS hardware. It always get a location lock within 5 - 15 seconds.

This trick not only to speedup the satelite fixing. Some also found that it increase the reception (strong signal even during cloudy, light raining, and inside building's window). I am one of this case .

Here is the tricks. It is tested on HTC desire HD, SGSII, and speculated to work on most Android device (Please note that it is in sequential order):

Requirements:
Rooted Device
File Manager: e.g. Root Explorer

1. Searching for NTP server information
Go to http://www.pool.ntp.org/en/
At the right side of webpage, there is "Active Servers". Go in and look for the setting of your 1)region and 2)country
For example, one's region is Europe then you write down the NTP server for that: 0.europe.pool.ntp.org; 1.europe.pool.ntp.org; 2.europe.pool.ntp.org; 3.europe.pool.ntp.org
Then the servers for your country from the list down there and click the link(Example: Switzerland — ch.pool.ntp.org; 0.ch.pool.ntp.org; 1.ch.pool.ntp.org; 2.ch.pool.ntp.org; 3.ch.pool.ntp.org
The "Italic" words are the information you need to jot down for later use

3. Modify the gps.conf file (Most Crucial Stage)
Copy the codes in grey box (in first post) to a notepad, then change the extension name from .txt to .conf then copy to your phone
Use file manager to copy to this location: /etc/gps.conf and replace the original gps.conf
Open and Edit the gps.conf using rootexplorer or others file managers
Change the COUNTRY and REGION in following lines with the info you got from the website just now. Keep other values unchange unless you know what it is. Example of REGION such as NorthAmerica, Asia, Africa, Europe.
Your new gps.conf should look as below:
NTP_SERVER=0.COUNTRY.pool.ntp.org
NTP_SERVER=1.COUNTRY.pool.ntp.org
NTP_SERVER=2.COUNTRY.pool.ntp.org
NTP_SERVER=3.COUNTRY.pool.ntp.org
NTP_SERVER=0.REGION.pool.ntp.org
NTP_SERVER=1.REGION.pool.ntp.org
NTP_SERVER=2.REGION.pool.ntp.org
NTP_SERVER=3.REGION.pool.ntp.org
NTP_SERVER=COUNTRY.pool.ntp.org <-This is changed from the top line to here. It may works better if we put it here.

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 =0

# 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=0

# Report supl ref location as position, 1=enable, 0=disable
REPORT_POSITION_USE_SUPL_REFLOC=1

# Wiper (wifi positioning), 1=enable, 0=disable
ENABLE_WIPER=1

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

# FOR SUPL SUPPORT, set the following
SUPL_HOST=supl.google.com
SUPL_PORT=7276
SUPL_NO_SECURE_PORT=3425
SUPL_SECURE_PORT=7275
SUPL_TLS_HOST=FQDN
SUPL_TLS_CERT=/etc/SuplRootCert

# FOR C2K PDE SUPPORT, set the following
C2K_HOST=c2k.pde.com
C2K_PORT=1234

CURRENT_CARRIER=common
DEFAULT_AGPS_ENABLE=TRUE
DEFAULT_SSL_ENABLE=FALSE

# TRUE for "User Plane", FALSE for "Control Plane"
DEFAULT_USER_PLANE=TRUE
Make sure the permission of the file is rw-r--r--

4. Reboot
Go setting, turn on your "use GPS satelites" and "Integrate Google Navigation"
Restart the device (normal restart)[/B]
5. Use GPS status and Toolbox
Tool available in market for free, please donate so developers are encouraged for better release in the future[/B]
Open app> tools> manage A-GPS state>Reset
Open app> tools> manage A-GPS state>Download
Optional restart device (not compulsory)
Use GPS status to start fixing satelites
Your satelite fixing speed should VERY FAST now
After get a successul GPS Lock, open your GPS applications and use like normal (e.g. Copilot, Sygic, or TomTom)
Extra Suggestion: Please make sure your GPS is enabled before your device is turnoff or restart. It won't actually use GPS unless you open map-related app or google.com.
CAUTION!!!: DO NOT use fasterfix after this. It will overwrite all the content in gps.conf

Credits: Thanks for JMax and Vault Killer for the gps.conf file
WARNING: Please do backup before messing with your device
Do it at your own risk, I cannot be held resposible for any damage or dysfunctional of your device

[Update: 17 August 2012]
Sometime even my phone won't work consistently. It won't able to get fix within 30seconds everytime. And i found this tool can be very very help to make sure my agps 95% up to date and thus has the best performance.

The tool is called "Leo AGPS Injector" developed by Tytung. Please click thanks or consider donation on the following post to thanks for the developer - Tytung. I have no credit at all for this tool. I just share it.
Here is the link http://forum.xda-developers.com/show...postcount=1907

Step to use the tool:
Install and place the widget on your home screen
Ensure your GPS setting is on
Make sure you're conencted to Internet / Mobile data
Press on the widget to inject AGPS data
Now you're good to go. The internet can be turn-off now. and your gps should work well

Note: I noticed once i connect to a big internet network (such as my university internet network). My GPS won't work anymore.
This is what i do to make it back to normal:
Connect to Mobile data (3G) and use "Leo GPS injector"
if it is still not working, i switch to airplane mode and back to normal mode again, then repeat step 1
And i notice, it works better if you use mobile internet, rather than fixed source internet at home. This is just what i feel, not necessary true.
http://forum.xda-developers.com/showthread.php?p=17081413

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