[Q] GPS issue with Cyanogen mod 050815 build nightly - T-Mobile, Samsung Galaxy SIII

Been testing the new 12.1 Cyanogen mod on my T999L with CWM installed for the last 48 hours. I am coming from jelly bean 4.3 and would like to get some insight from some android fans out there who are tech savy running these modded roms. This is the first time i have installed a modded rom and wanted to mention a few things that i noticed on the 05-08-15 nightly patch which i am running. Everything seems to be running alot faster and is a much needed improvement over JB 4.3. I have noticed one major concern with locking onto GPS satellites. I use GPS heavily with WAZE, NAVIGATION, etc and rely on not only cell towers but local wifi to locate and obtain the most accurate position within 10-30ft. If any Xda developers is reading this maybe they can chime in as well . I have noticed on GPS Status tracker i can only pickup while driving 7-14 satellites versus the total of 23 satellites i was getting before. I used to be able to lock on satellites no problem in my home but now just stays at 0 lock . I have noticed the GPS signals on every satellite is VERY week no bars within the app. Although it somewhat works when i am driving it fluctuates signal strength from 0-13 sats being locked on where as in the past on the official JB i was getting an immediate lock with a stead 15-23 sats . I will be looking out for daily patches and testing to see if this gets improved and hope someone is on the same page with me . Other than slightly more battery usage the latest update is almost perfect besides GPS
Hopefully someone here knows what i am talking about because i have researched this to death and have not found one thing so i thought i would chime in on this issue.
Thanks

Related

GPS stopped working... any idea before i'll send it for RMA?

Hi all
Few days ago i realized that GPS on my Defy is not working anymore...
It cannot get fix in any location, and GPS status tells me that is actually sees few satellites - 3-7 but readings are not stable (they dissapear from time to time) and it can not get fix...
I am on Froyo - official.
Any ideas?
I just tried it out again - it got fix, but after 130 seconds..... ...normally on a cold start it used to get a fix in below 30 seconds....
Same issue here, stopped working Thu 21st or Fri 22nd. Couldn't get any fix. Restored to factory with no success. On Sun it was working, after a few days it got better, but sometimes the startup time is long, the signal fluctuates and the accuracy (with GPStest) jumps between 4.5m and 45 or even 98m)
Also the GPS indicator sometimes doesn't show up on the status bar while gps is working.
Official Froyo here as well.
Must be some conspiracy
Maybe to get us buy Defy+
Same problem, GPS was working until last week... On Motorola forum there are some other people, which GPS stopped working this month, what's going on? By "stopped working" I mean, that I can not get GPS fix ie. with data connection off or I need to wait 30 minutes until I get GPS fix. For those 30 minutes I see 10 satellites, but no fix. Before month I had GPS fix w/wout data in 30 seconds.
Also been reading about this on the Motor forums. I have not been having the issue (California). Bought mine in November US when they first became available. Official 2.2, T-Mo. Green lens, FWIW.
Same problem here. Bought it in January but around June it stopped being able to hold a lock on any satellites. It can see 10 satellites very easily, and it will lock for a few seconds, but then it drops all of the sats and starts over.
It stopped working on official Froyo, but no joy on CM7 either.
There are a number of article on the net about GPS jamming. In the US Homeland Security routinely cuts GPS and if you are a pilot you will receive an advisory. But there is this:
http://www.economist.com/node/18304246
May not be related. Also, on another pilot forum, they are blaming certain types of GPS antenna for being jammed by cell towers.
I have the same issue. It worked ok for me yesterday while driving a long distance, but lost GPS after about an hour.
I can sometimes get a good enough fix to check in on foursquare, but not often.
I'm on official tmobile us froyo and have done factory reset, but it didn't help any.
Sent from my MB525 using XDA App
tlongren said:
I have the same issue. It worked ok for me yesterday while driving a long distance, but lost GPS after about an hour.
I can sometimes get a good enough fix to check in on foursquare, but not often.
I'm on official tmobile us froyo and have done factory reset, but it didn't help any.
Sent from my MB525 using XDA App
Click to expand...
Click to collapse
Where are you located?
scrannel said:
Where are you located?
Click to expand...
Click to collapse
Iowa, USA. My standalone GPS device works perfectly here.
Sent from my MB525 using XDA App
My gps seem to be faulty too. In uk.
Sent from mobile.
I always read this stuff just before I buy a phone:/ So it's a wide spread issue?
Might be getting that HTC 7 pro now
tlongren said:
Iowa, USA. My standalone GPS device works perfectly here.
Sent from my MB525 using XDA App
Click to expand...
Click to collapse
A link on a pilot forum tested (not sure if it was a phone or other device) a GPS drop-out the pilot was having consistently on the way to his airfield. He finally noticed that when he drove between two cell towers his GPS dropped signal. He retested this several times and with the same result.
John Deere is fighting a 40,000 cell tower development which would disrupt GPS on farm tractors which rely on GPS for movement. This is a Sprint deal with LightSquared.
Look around this site for more GPS woes: http://www.avweb.com/avwebflash/news/GPS_Side_Issue_LightSquared_Broadband_204980-1.html
My gps actually worked today! Figured I'd try it going from hotel to water ski show, took about 2 minutes to get a gps signal. But once it did, it worked well and got us to our destination.
Nothing has changed with phone setup, so it's a bit inconsistent it would seem.
Will be trying it again in a few hours. Wish me luck.
Sent from my MB525 using XDA App
Mine (UK stock Froyo 2.2) was the same, with A-GPS and data and WiFi all switched off it was struggling to get a fix, intermittently.
All GPS Status/Monitor apps showed that it finds many satellites but no locking.
Yesterday I got this app GPSFix from the Android Market and it locked in 1 min. After that all apps and monitors lock without any problem. I need to try more to be sure it was due to the app...
That's interesting Aeron_11. I'm gonna give GPSFix a try. Here's the market link if anyone is interested in trying it:
https://market.android.com/details?id=com.androidlab.gpsfix
The reviews seem to be very good.
GPSFix doesn't do any good for me. It's the same old story. Sees lots of satellites but can't hold a lock on any of them for more than a couple of seconds.
Running CM7
Well, I did some more tests, and I think GPSFix wasn't quite as reliable as I originally thought !
Basically it is still very intermittent. Sometimes it takes 5min or more and sometimes 1min. I think it depends on many parameters:
- I would say weather is a factor, cloudy, windy etc.
- Standing next to a wall or a building - even if not tall it blocks the direct view
- Also I find if you are moving, it will be a lot harder. Stand completely still and not just stop walking but don't move the phone about too much !
- The latest I found is the direction you are holding the phone (and possibly angle) !? Experiment and you see it picks more satellites in certain angles !
All in all, I get a fix but it just takes a long time sometime. A good GPS antenna/hardware in a phone probably is much more reliable than this (my records is 9min, which to be honest puts it pass the practical use). Although this is with all the data and WiFi and other connections switched off.
The funny thing is once it locks it won't let go !? It keeps it locked and won't drop it - accuracy is so so.
By the way, the number of satellites found is not important, it's the strength of their signal (I think it might be called SNR - some monitors show the strength and you can see that until it finds 3 or 4 satellites with 25+ SNR it won't lock.)
I'm no expert, these are just my impression/experience, that's all....

[Q] HTC Wildfire S + CM10.1 = GPS not working

Hello,
I installed the touchwized version of the CM10.1 by cup_cake (http://forum.xda-developers.com/showthread.php?t=2365885&page=11)
The ROM works great with the exception of the GPS which is now not working, if I use an app. to display the satellites available it will display 4 or 5 satellites but it will never get a fix.
Is there any way I can fix this?
Thanks,
Can anybody help me with this please?....
I'm experiencing the same!
GPS was working fine with CM 7.2, but after installing a new CM 10.1 ROM the GPS fix takes literally ages, if it works at all. The Galaxy Nexus, for comparison, finds enough satellites for a fix within seconds, when the latest stock ROM (4.2.1) is installed.
Any ideas where to start?
I had the same issue on my Wildfire S running Owl Project's Jellybean CyanogenMod 10,1
(http://forum.xda-developers.com/showthread.php?t=2283549)
GPS did not lock even after half an hour, it only drained battery. But I tried this thing:
(http://forum.xda-developers.com/showthread.php?t=1447593)
One of these flashable ZIPs made the GPS find satellites. The coordinates it gives me are off about 200 kilometers from my actual location but at least it locked, at least there is some progress. I am still trying to figure out how to make GPS show me my actual location and not some asshole place I've never been to.
But some others said it worked like charm for them, maybe it will for you, too.
Hey Shisco!
Currently I'm using TopNTP (you can find it in the Play Store), an app from the thread opener of your link. It does the same as the zip files there, but gives you the option to adopt the gps.conf settings to your needs. Give it a try, because IMHO this app improves GPS a little bit.
Okay, the problem just disappeared by itself When on the move, more satellites appeared and GPS coordinates were now exact. The patch worked in the end I just had to give it some time
Same here, but it sometimes sucks to wait that long. Under CM 7 the GPS fix was much faster.

GPS Issues

Sounds like I am not the only one having GPS issues with my HAM. I have tried pretty much everything to improve things but with little or no success. Just to be clear I am talking about GPS locking and accuracy not AGPS (mobile tower) or WIFI based location which seem to work fine.
Hopefully this thread will get noticed by HUAWEI and they will fix the problem which in my case is :
Inconsistent GPS locking, sometimes it locks on pretty quick < 1min other times the GPS icon in the notification bar just keep flashing.
Inaccurate GPS location when it does lock with the position jumping around.
Location and heading changes when stationary which are probably related. Looks like internal compass maybe buggy or is not getting used.
I very dependent on GoogleMap and its Navigator which is where the above issues have been identified. I tried Waze which seems to dampen the location and direction jumping a bit but the initial lock was still a problem.
Same issues in B906 and B907 roms, haven't tried B221 (trying it next but it looks like others experienced the same with this rom)
Tried:
GPS Status and Toolbox - no difference
GPS Fix - no difference
http://forum.xda-developers.com/show....php?t=1563226 - Used Method 2 and with SSL as suggested by member svvv - Improved AGPS and WIFI based location lock but didn't help with the GPS
Never had this problem with any of my previous 4 Androids and even my old Windows Phone worked flawlessly. Maybe its something to do with my HAM being a Chinese model and it also having GLONASS which has better coverage in the northern hemisphere. Will see if I can set it to just use just the US GPS system in the build.prop.
Its a shame that Huawei stuffed the GPS on the HAM, it would be my perfect phone otherwise, if I can't get it going reliably it will be the Galaxy Mega for me as much as I hate Touch Wiz......
Location Access enabled with both and wireless networks enabled.
Google account Location settings enabled.
2GB no NFC International Model, rooted.
mingonn said:
Sounds like I am not the only one having GPS issues with my HAM. I have tried pretty much everything to improve things but with little or no success. Just to be clear I am talking about GPS locking and accuracy not AGPS (mobile tower) or WIFI based location which seem to work fine.
Hopefully this thread will get noticed by HUAWEI and they will fix the problem which in my case is :
Inconsistent GPS locking, sometimes it locks on pretty quick < 1min other times the GPS icon in the notification bar just keep flashing.
Inaccurate GPS location when it does lock with the position jumping around.
Location and heading changes when stationary which are probably related. Looks like internal compass maybe buggy or is not getting used.
I very dependent on GoogleMap and its Navigator which is where the above issues have been identified. I tried Waze which seems to dampen the location and direction jumping a bit but the initial lock was still a problem.
Same issues in B906 and B907 roms, haven't tried B221 (trying it next but it looks like others experienced the same with this rom)
Tried:
GPS Status and Toolbox - no difference
GPS Fix - no difference
http://forum.xda-developers.com/show....php?t=1563226 - Used Method 2 and with SSL as suggested by member svvv - Improved AGPS and WIFI based location lock but didn't help with the GPS
Never had this problem with any of my previous 4 Androids and even my old Windows Phone worked flawlessly. Maybe its something to do with my HAM being a Chinese model and it also having GLONASS which has better coverage in the northern hemisphere. Will see if I can set it to just use just the US GPS system in the build.prop.
Its a shame that Huawei stuffed the GPS on the HAM, it would be my perfect phone otherwise, if I can't get it going reliably it will be the Galaxy Mega for me as much as I hate Touch Wiz......
Location Access enabled with both and wireless networks enabled.
Google account Location settings enabled.
2GB no NFC International Model, rooted.
Click to expand...
Click to collapse
If ur AGPS is working fine eventually ur GPS should work fine. AGPS will use network to locate the GPS satellites.
try changing AGPS settings in the Ascend Mate secret menu *#*#2846579159#*#* under backgroundsetting
Thanks Svvv, will see what options come up. GPS usually eventually locks but it's never that accurate. Will A GPS improve this?
Sent from my HUAWEI MT1-U06 using Tapatalk
mingonn said:
Thanks Svvv, will see what options come up. GPS usually eventually locks but it's never that accurate. Will A GPS improve this?
Sent from my HUAWEI MT1-U06 using Tapatalk
Click to expand...
Click to collapse
AGPS wont be that accurate as GPS...but whenever mobile cant fix a position with GPS satellites it goes for AGPS until GPS becomes active. U will not see any difference in the navigation.
Also try using GPS in the open skies mostly u wont get a fix inside a house or closed areas.
Thanks Svvv, that's what I found. Still can't believe Huawei couldn't get this right, even my wife's $50 ZTE's gps works like a dream. Searching through the P6 forums shows similar problems, not surprising given the similar hardware. I'm starting too suspect it's a hardware problem, maybe antenna related so I'm not confident of a software fix. Spent far top much time on this and I need accurate navigation so it's so long HAM. It's a shame, great phone otherwise, going too miss the battery life.....
Sent from my HUAWEI MT1-U06 using Tapatalk
GPS update. Tried B221 for a week but GPS issues were the same, positional accuracy was seemed slightly worse.
Rom was more stable than b907 though, no random reboots or system freezes bit b907 has better functionality. Very jealous of my wife's nexus 5, can't tell you how good the hardware and software is. A absolute bargain!
Can't go back to a small screen though, fingers crossed we see a nexus 6 to bridge the gap
Sent from my HUAWEI MT1-U06 using Tapatalk
mingonn said:
GPS update. Tried B221 for a week but GPS issues were the same, positional accuracy was seemed slightly worse.
Rom was more stable than b907 though, no random reboots or system freezes bit b907 has better functionality. Very jealous of my wife's nexus 5, can't tell you how good the hardware and software is. A absolute bargain!
Can't go back to a small screen though, fingers crossed we see a nexus 6 to bridge the gap
Sent from my HUAWEI MT1-U06 using Tapatalk
Click to expand...
Click to collapse
since i dont quiet use gps in phones (i'm using other gps only gadget) i'm sure there must be something missing in the HAM that prevent it having good GPS signal/system.
well, if you ever wanted to replace the HAM, still wanted the same Batt Power, big 6.1", why not go for the HAM 2 which is LTE version with many improvements over the first HAM, heard that they improve GPS too.
It is the same problem with Huwaei MT 7 - I can not believe the this company did not discover this issue in their product yet, this is what is bad about the Chinese products
Strange, all of a sudden Yesterday, it seems all the people I know with Huawei phones have no GPS (Mate 2 and P8 Lite). I checked 6 phones. Worked fine Sunday, then BOOM Yesterday (Monday) no GPS no matter what I do. Any one else having this issue? I am on Android 5.1 B322.
rekamyenom said:
Strange, all of a sudden Yesterday, it seems all the people I know with Huawei phones have no GPS (Mate 2 and P8 Lite). I checked 6 phones. Worked fine Sunday, then BOOM Yesterday (Monday) no GPS no matter what I do. Any one else having this issue? I am on Android 5.1 B322.
Click to expand...
Click to collapse
Wow so im not the only one that's weird I just did the upgrade to b322 Saturday so I though something screwed up there. have you seen any devs come up with a cause or solution?
I had the same experience with my ascend mate 2. Mt2lo3. GPS is laggy to an extreme. Maybe the Chinese GPS Data connection. web.omwtoday.com???

GPS issue with Cyanogen mod 050815 build nightly

Been testing the new 12.1 Cyanogen mod on my T999L with CWM installed for the last 48 hours. I am coming from jelly bean 4.3 and would like to get some insight from some android fans out there who are tech savy running these modded roms. This is the first time i have installed a modded rom and wanted to mention a few things that i noticed on the 05-08-15 nightly patch which i am running. Everything seems to be running alot faster and is a much needed improvement over JB 4.3. I have noticed one major concern with locking onto GPS satellites. I use GPS heavily with WAZE, NAVIGATION, etc and rely on not only cell towers but local wifi to locate and obtain the most accurate position within 10-30ft. If any Xda developers is reading this maybe they can chime in as well . I have noticed on GPS Status tracker i can only pickup while driving 7-14 satellites versus the total of 23 satellites i was getting before. I used to be able to lock on satellites no problem in my home but now just stays at 0 lock . I have noticed the GPS signals on every satellite is VERY week no bars within the app. Although it somewhat works when i am driving it fluctuates signal strength from 0-13 sats being locked on where as in the past on the official JB i was getting an immediate lock with a stead 15-23 sats . I will be looking out for daily patches and testing to see if this gets improved and hope someone is on the same page with me . Other than slightly more battery usage the latest update is almost perfect besides GPS
Hopefully someone here knows what i am talking about because i have researched this to death and have not found one thing so i thought i would chime in on this issue.
Thanks

GPS Issues on N based roms, please help

Since I installed the first N OOS build i have issues withmy GPS,
every few seconds it lost the lock and needed a few seconds to reacquire it.
Also sometimes it does not acquire ay lock at all and need a reboot to work again.
As far as I can tell the issue happens with every android N based OxygenOS.
And also with Lineage OS 14.1
I tryed clean flashing booth and it did not change anything.
Now I flashed back to the last MM based community build and it works no lost of GPS signal, reasomably quick fix.
Does any other users also have GPS issues with N based roms on the OP3?
How can I solve the issue or at least find out whaty causing the issues?
Funny you mention this. I use my op3 for my topo maps when I hike and I have found N based roms to cause the gps to require a relocking. Also, the gps is noticeably less accurate.
Anyone got an explanation/solution?
good to herar that I'm not the only one with GPS issues.
Now the question is how to fix those?
I am also facing GPS issues since Oxygen OS 4.x.x, before that I never experienced any.
Sometimes it take 5 to 10 minutes until it finally fetches a GPS Signal but it is still very inaccurate then.
Hopefully the new OOS 4.0.3 update helps, but I doubt it since there is no mention of GPS in the release notes.
I also have this issue, the only resolution I had is to switch on WiFi scanning. After turning it on GPS has been a bit better and locks to the correct location quickly.
Sent from my OnePlus3 using XDA Labs
Ok I found out something new when I set mobile data to 2G GPS works great also on the 4.0.3 OOS ROM.
And since people complained since the start that some have issues with GPS and 4G I guess the issue really is that if some particular frequencies are used GPS suffers. Apparently something changes in N ROMs that makes the issues appear for more users.
Interestingly is that flashing Modem Firmware has no affect so the issue is in a part that is in the android kernel itself.
https://forum.xda-developers.com/oneplus-3/help/gps-issues-t3416544
Every time I turn location on, I get the "improve location accuracy?" prompt. Every single time.
How can I stop this? Never had this before, usually goes away after one enable.
Another strange thing sometimes the GPS cant get a lock and the only way to fix it is to restart the phone.
the bew Open Beta 12 based on Android 7.1.1 seams to have resolved my GPS issue really strange
Hi - I also do have heavy problems with losses of GPS- signal at the OP3 since months. Especially while using LTE the GPS gets often lost. Since 5 weeks I am working/struggeling with the OP-support a lot - but no changes till now. @David: "Open Beta 12" has solved your problems?? what is this concrete?
i do have the problem...... from 4.0.2 updated to 4.1.1 and now Beta13, the problem still there~!!
On my phone gps signal gets lost always at the same location and when lte is active. On any other location gps works perfect. When i disable lte everything works perfect. This has happend on any rom. I think this is a hardware problem and can not be resolved. The only solution is disabling lte or using a different provider. I am using o2 in Germany, the problem does not happen with other Providers. Different Providers have different frequencies, this might be the difference between o2 and the other providers.
I do have O2-LTE too and it is "under suspicion" in Germany. But in February I was for 4 weeks in Florida and travelled a lot using navigation. The provider was AT&T - and I had very often losses of GPS-signal too.
I can confirm, that the problem happens with different ROM, but not at only one location - it happens everywhere.
But what can we do? OnePlus is working at this problem since months without a solution - and the customer with this bug really have to accept it "for zero"??
Hello @OPFan , did you get help from the support? Or could you resolve the problem?
3 months of contact - lots of bubbles - no solution
try downloading the "Gps Test "app then enable GPS and open the app and click on the 3 dots > AGPS > Clear and update
cheptii said:
try downloading the "Gps Test "app then enable GPS and open the app and click on the 3 dots > AGPS > Clear and update
Click to expand...
Click to collapse
this was one of the thousands of tryings - but also with zero effect
I'm having a lot of GPS issues since I've been using OPO or OP3.
I sold my OPO because of the bad GPS. Now I have the OP3.
On both phones I used custom ROM Cyanogenmod.
I sometimes had bad GPS reception, but this was fixed under Cyanogenmod doing this: Disable GPS, Disable Data, Enable Airplane mode, Disable Airplane mode, Enable Data, Enable GPS, then wait for GPS reception and start navi app.
Last week I flashed my OP3 with another ROM (AOSP) but this only made it worse!
I use my phone as car navigation daily, and while navigating, it finds GPS and it loses GPS every 5 seconds (using WAZE app). It's incredibly annoying. Using AGPS or any other "fix" found online doesn't fix the problem.
When using another navigation app, like Google nav, it's works better (because Google also uses LTE). Clearing cache or unistalling and reinstalling the WAZE app doesn't fix the problem.
Conclusion:
It is totally not related to your provider because they are working on fixed standard frequencies and I've been using the same provider on both phones.
It's also not related to the hardware only, because it was working on my OP3 under Cyanogenmod. So it should be related to the hardware driver included in the ROM.
Maybe this gives anyone an idea?
---------- Post added at 07:52 ---------- Previous post was at 07:45 ----------
Found something here that might help:
https://forum.xda-developers.com/showpost.php?p=73681689&postcount=165
I have also GPS issues. It works well in gmaps, but it is unusable in Waze.
I thought AOSPA was causing it so I cleanflashed latest OB, but GPS issues are present there too

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