[FIX] Slow GPS fix
- Thread starter Claus72
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There's a very good thread about this subject here, [Trick] Speed Up Satelite Fix for GPS on Android
Tnx man. I installed Android 4.0.4 on my S2 and i didnt get lock then i changed it to europe and it locked the sattelite in 10 sec
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15I have had one problem with gps fix, it took about 90 sec to fix satellites.
I have found a thread in the Desire section that have solved this problem.
Now my gps takes about 15-30 sec to fis the satellite.
http://xdaforums.com/showthread.php?t=727887
This fix is only for European users and need to have root privilege.
You have to edit the file gps.conf located at /system/etc. I have used root explorer to edit the file.
You have to change the server like this:
NTP_SERVER=europe.pool.ntp.org
instead of
NTP_SERVER=north-america.pool.ntp.org
For me it is working fine. I hope it is the same for you.
Sorry for my English.92Update
thanks for help us..
I can add this too:
after opening the GPS.conf by Root system, right click and roll it down and choose (Open in Text Editor)
in the first line replace the stars with your server as shown below NTP_SERVER=***********
حبايبي في الشرق الأوسط - آسيا
For Middle east-Asia (Arabian Gulf)+yamen+jordan+syria+Iraq+Lebanon Try one of this servers :
Global servers:
0.asia.pool.ntp.org
or
1.asia.pool.ntp.org
or
2.asia.pool.ntp.org
or
3.asia.pool.ntp.org
or you can try your country server from below:
Philippines — ph.pool.ntp.org
Malaysia — my.pool.ntp.org
Turkey — tr.pool.ntp.org
Singapore — sg.pool.ntp.org
India — in.pool.ntp.org
Hong Kong — hk.pool.ntp.org
United Arab Emirates — ae.pool.ntp.org
Japan — jp.pool.ntp.org
Bangladesh — bd.pool.ntp.org
Israel — il.pool.ntp.org
Korea — kr.pool.ntp.org
Thailand — th.pool.ntp.org
Iran — ir.pool.ntp.org
Taiwan — tw.pool.ntp.org
China — cn.pool.ntp.org
Indonesia — id.pool.ntp.org
Vietnam — vn.pool.ntp.org
Pakistan — pk.pool.ntp.org
Oman — om.pool.ntp.org
Uzbekistan — uz.pool.ntp.org
Sri Lanka — lk.pool.ntp.org
Kyrgyzstan — kg.pool.ntp.org
Cambodia — kh.pool.ntp.org
for Africa countries:
1.africa.pool.ntp.org
or
0.africa.pool.ntp.org
or
1.pool.ntp.org
in Europe:
the global is:
0.europe.pool.ntp.org
or
1.europe.pool.ntp.org
or
2.europe.pool.ntp.org
or
3.europe.pool.ntp.org
or try your country server if available (sometime off)
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
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
North America:
the global
0.north-america.pool.ntp.org
1.north-america.pool.ntp.org
2.north-america.pool.ntp.org
3.north-america.pool.ntp.org
or find your country below:
Canada — ca.pool.ntp.org
United States — us.pool.ntp.org
Mexico — mx.pool.ntp.org
Guatemala — gt.pool.ntp.org
Panama — pa.pool.ntp.org
Bahamas — bs.pool.ntp.org
Costa Rica — cr.pool.ntp.org
El Salvador — sv.pool.ntp.org
South America:
the global:
0.south-america.pool.ntp.org
1.south-america.pool.ntp.org
2.south-america.pool.ntp.org
3.south-america.pool.ntp.org
or find your country server below:
Brazil — br.pool.ntp.org
Chile — cl.pool.ntp.org
Argentina — ar.pool.ntp.org
Venezuela — ve.pool.ntp.org
Hope this give a more help
Regards2I don't know why people keep investing with changing the time server for the GPS.conf file. This is only used for calibrating the time of your phone. It does not matter which server you use as they all report in GMT. Saving 80ms is not going to make any difference. The default one works and the slight latency is fine.
Further more this gps conf file is used to configure the downloading the the GPS-A data. It is scheduled to run x times per week however I believe it does not run. The process is meant to be, it initially downloads the data to a local file location and then injects it into the GPS. The schedule job is not even running. I suspect it is a permissions thing. The second issue is the current kernel is not allowing the GPS data to be injected into the GPS where it can be used for speeding up GPS locks.
Testing of this fix is pointless within 24 hours as the GPS will remember the lock details it last had. Within a certain time period the same satellites will still be in place/available therefore a quicker lock. After 6-12 hours the satellites have move on and the old info does not apply anymore so a complete new lock is required. This takes time.2What finally worked for me...
Well, after reading and reading, I found out that there was too much guessing on the gps.conf settings. Still, these settings did solve my problem.
It appears that the ACCURACY THRESHOLD value is the key in achieving a quick GPS lock. Why? The less accuracy the more GPS satellites and the quicker the lock.
My gps.conf file is as follows:
Code:NTP_SERVER=south-a merica.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 # DEBUG LEVELS: 0 - none, 1 - Error, 2 - Warning, 3 - Info # 4 - Debug, 5 - Verbose DEBUG_LEVEL = 1 # Intermediate position report, 1=enable, 0=disable INTERMEDIATE_POS=1 # Accuracy threshold for intermediate positions # less accurate positions are ignored, 0 for passing all positions ACCURACY_THRES=10000 ################################ ##### AGPS server settings ##### ################################ # FOR SUPL SUPPORT, set the following # SUPL_HOST=supl.host.com or IP # SUPL_PORT=1234 SUPL_HOST=supl.google.com SUPL_PORT=7276 # FOR C2K PDE SUPPORT, set the following #C2K_HOST=c2k.pde.com #C2K_PORT=1234 ################################ # EXTRA SETTINGS ################################ # Wiper (wifi positioning), 1=enable, 0=disable ENABLE_WIPER=1 ################################# ##### AGPS Carrier settings ##### ################################# CURRENT_CARRIER=common DEFAULT_AGPS_ENABLE=TRUE DEFAULT_SSL_ENABLE=FALSE # TRUE for "User Plane", FALSE for "Control Plane" DEFAULT_USER_PLANE=TRUE REPORT_POSITION_USE_SUPL_REFLOC=1
By default, the ACCURACY_THRES parameter was not specified. I don't know if it defaults to 0. My lock times where +3 mins
Then I tried with ACCURACY_THRES=5000 and the GPS lock times went down to 1~3 mins
Now, with this setting ACCURACY_THRES=10000, I get GPS locks under 1 min and it's quite accurate (GPS Status indicates 2m error).
It would be great to get a description of all gps.conf parámeters, but if you google for "gps accuracy threshold" you will find that for faster locks, a higher number is required.
Hope it helps!!!
ps: Note that NTP_SERVER is configured to south america, since I am in that zone. change it accordingly.
