[Q] gps issues cm10.1 - Galaxy Ace II Q&A, Help & Troubleshooting

hi,
ive installed cm10.1 of teamcanjica on my device. everything runs pretty good but gps. it takes 30 minutes and more to find a signal. i tried fastergps and other similar apps but no change.
i often use gps. can you please help me to fix this?
stefan

pizzamitsucuk said:
hi,
ive installed cm10.1 of teamcanjica on my device. everything runs pretty good but gps. it takes 30 minutes and more to find a signal. i tried fastergps and other similar apps but no change.
i often use gps. can you please help me to fix this?
stefan
Click to expand...
Click to collapse
30 minutes is not acceptable at all, even if A-GPS isn't working for whatever reason a full satellite sync takes 12 minutes of continuous connection...
(try doing factory reset + wipe system before reinstalling everything, if it still has problems I suspect hardware issues)

Related

[Q] No GPS Sat fix without Data Connection (aGPS)

Hi there,
first: sorry for the 1.000.000th thread about the GPS sat fix on the DEFY, but I have tried several ROMs now and still have not found the solution for my problem.
The problem is: my DEFY does not get a GPS sat fix when data connection is turned off (e.g. roaming or turned off manually). In GPS Status I see up to ten satellites (in grey or sometimes yellow colour) but even after hours I do not get the fix. When I turn on the data connection (either 3G or wifi) I get the fix in few seconds.
I have tried several ROMs now from Froyo, over Gingerbread to now CM7 RC0, but all show the same behaviour. I have recently downloaded the GPS fix from this thread: http://forum.xda-developers.com/showthread.php?t=953630 but it did not help at all.
I have deleted the /data/location folder, reseted the aGPS data several times, nothing got better.
I feel like sending the DEFY in for repair but then Motorola will check it with aGPS and send it back unrepaired because everything works.
So, if anybody has a solution or hint I woul appreciate it very much.
Thanks in advance...
HMM !
Same problem here
it is true, without agps data, very difficult to get fixed. That's why we need agps.
I have CM7, with GPS Monitor Free and AngelDeath's GPS fix 1.2.zip installed, I am able to get GPS lock in couple minutes without any Data (on fresh restart).
Give it a shot
GPS Monitor does not solve the problem
Hi there.
@teruyume
GPS Monitor did not help, it shows the same behaviour as GPS Status. Finds many satellites but does not fix!
Can anybody check if he has data in the folder /data/location ? I deleted it as stated in the FAQ for CM7 and the folder is not yet recreated. Might this be a hint?
I really cannot tell what the problem is: good reception (10 satellites) but no fix.
I have also been having trouble with GPS on the Defy. It will get a fix very quickly but moving the phone will cause it to lose its fix. It will go from having a lock on 8/10 sats to 0/1 to 4/5, etc. It won't hold the lock for long. I tried AngelDeath's GPS fix 1.2.zip and that helped speed up fixes, but it still drops the fix if the phone is moved at all.
@hartmuna
I made a backup of /data/location and then deleted its contents (not the folder itselft). Then I got no lock at all. I rebooted the phone and it automatically repopulated the folder and began performing the same as it did before. You might want to create the /data/location folder and just leave it blank, then reboot the phone and see if it will populate it again.
I also took a look at location.cfg and noticed a lot of settings in there that might be worth tweaking, but I have no idea what they all mean.
I found the data/location folder with terminal,don't know why it doesn't sure vida astro. deleted it again but that doesn't solve the problem.
I think I might give official gingerbread 2.3.4 a chance after the weekend. hopefully this will help?!?
Does anybody have experience with the leaked 2.3.4 and gps?
Sent from my MB525 using XDA App
I also had little problems to have the fix. And when I got (after several minutes) it loses during driving. The accuracy was too bad.
on CM7 rc1v2.
Anybody without GPS problems?
Hey guys, still no solution here. Tried every ROM out there.
One question: is anybody out there who does not have any problems with GPS fix without aGPS?
I am thinking of sending the DEFY in for repair...
With JBoogie3's blurry ginger rom I got 5 satellites used in fix in less than a minute (without internet). Try this rom before sending the DEFY in service.
same problem here, using last nighly and the problem still ocurrs, tried GPS-fix from angelofdeath but stil imprecise.
No solutions so far?
--
ive tried the GPS Monitor , he shows the lock, satellites, etc.. but, the gps with a "4 meters precision" put me on another street insted of mine, a mistake of ~50 meters (shows me on a paralel street instead of mine)
My standard Defy (still on Eclair) does fixes without Agps/data connection but after a trip of say 1000 km it can take up to 15 minutes to get a fix.
It also seems to help when I reset the Agps data first through GPS status (app).
GPS fix when not applying the UPDATE.ZIP
News from my side: I updated to CM 7 RC1v2 and this time did not apply the UPDATE.ZIP for my country described in this thread: http://forum.xda-developers.com/showthread.php?t=953630
And after few minutes I finally got a fix without aGPS data!
So my suspect is now the modified gps.conf. The original one is very short a has basically just the reference to the NTP and google aGPS server. The modified has far more lines that I have not yet studied in detail.
So, I will check the line of the gps.conf and try to find out what affects the GPS of the DEFY no to work...
Greetings from a happier DEFY user
That is good news. Would you be willing to copy/paste what is in your gps.conf file so that I can try updating mine without reflashing CM 7 and see if that solves my problem?
Brent099 said:
That is good news. Would you be willing to copy/paste what is in your gps.conf file so that I can try updating mine without reflashing CM 7 and see if that solves my problem?
Click to expand...
Click to collapse
Sure, you will find the original.zip with the not modified gps.conf and then I installed the europe.zip from the above mentioned thread.
So far I am able to get a fix but for my patience it takes much too long. I am afraid that the GPS antenna of the DEFY is crappy.
Will do some more testing, any additional info is very welcome...

Yet another uncommon GPS problem

Okay, this seems just another common GPS problem with a DHD. But I find it intriguing.
It happens to me since I bought the phone, second hand.
I've already made the mod to the antena (soldered wire) and use the AGPS Patch and FasterFix to choose the server. Nothing solved it.
So, when the GPS works, it works really fine, no abnormal signal loss, not too much lag.
Note that it only works fine when I turn data ON, so it can download agps info.
There comes a day when I turn data on, go outside, turn Sygic on (or other gps program), and no satellites at all. GPS Status indicates the same.
I can go for more than 15 minutes without gps fix. It can go for longer, but I don't have the patience. I reset the AGPS info with GPS Status and download a fresh one and the problem remains.
If I restart the phone, 99% of the times, it solves the problem.
Now, I found out that a program called Quick Reboot (https://play.google.com/store/apps/...Glub3NvZnQuYW5kcm9pZC5RdWlja1JlYm9vdEZyZWUiXQ) avoids me having to restart the phone. Plus, GPS Doctor is quite efficient too.
So, I have to run Quick Reboot, then GPS Doctor, then Sygic or other Nav Program. Not very handy, if you're already driving...
Now, what on earth is this?
Hardware seems fine, because it doesn't fail, for example in a 300 km trip. If it gets a fix, it stays on nicely.
It sounds a software problem, deep in the OS itself.
I'm on Android 2.3.7, CM 7.2, but tested this on various CM based roms, ICS, rooted OEM ROM and it behaves the same.
If anyone can help... or share experiences... Any devs?
Thanks
I dont think it is going to get any better than that. I have the same experience as well with ICS ROMs. However, some ROM's dont do it so often.
i have same issue on default rooted rom wwe3.12.405.1.....
it may be problem with some specific models or all od dhd series
and its very random and happens on trips mostly
agps /wifi/mobile data nothing fixes it
restart fixs issue instantly ...
once after restart gps gets fixed it works perfectly ...
I have this exact same problem, and I'll try your tip for using the Quick Reboot app.
I'd also recommend the app AGPS Injector which enables you to start GPS based apps e.g. navigation etc. 'via' AGPS injector. It automatically downloads AGPS info before starting the navigation app. You can even create homescreen shortcuts for navigator apps which do it all with one click. Perfect!
I'm going to try combining this with a Quick Reboot using Tasker, again so that it does it all with just one click. I'll report back if it works.
Yep, automated steps would be great, like:
auto data on / agps injector / auto data off / run gps program
or even
Run Quick Reboot / quit Quick Reboot / auto data on / agps injector / auto data off / run gps program
:silly:
Just got a total GPS blackout an hour ago, and the combination Quick Reboot + AGPS injector (bought the full version) didn't worked for me, despite 5 or 6 atempts.
Then gave up and just went for a try with Quick Reboot + GPS Doctor and got it working without rebooting. :good:
Sounds like I need to try GPS Doctor. I've had good success with AGPS Injector. For me, I spent ages trying to find an app which gave the same results as using the AGPS reset and download in GPS Test, and that did it. Maybe there's some regional variation.
Do those apps just force a download of the links in the gps.conf file?
Have created setups using Tasker which I'll try tomorrow. Also found the app Fast Reboot which does a similar thing to Quick Reboot, so I'll compare the two.
Sent from my HTC Desire HD using xda app-developers app
Yes, could be a regional variation.
Don't really know what the AGPS info download does.
I've used that Fast Reboot Pro program, but didn't do the trick for me.

[Q] GPS not working. I tried EVERYTHING!!!

Hello! I know this is a common thread, but i'm desperate!
My GPS is not locking at all, i left the phone for 10 to 20 minutes and i got nothing...
I'm using the CM10.1 MoDaCo ROM, but i tried so many ROMS, fixed configuration files, walkthroughs, etc, but none of them seem to work.
I'll list all the methods that i try so far.
1) Flash a fixed configuration file
2) Change the ROM: i tried with the stock 4.2.2, CM10, CM10.1 Nightlies, CM10.1 Experimental, MoDaCo CM10.1
3) Flash different radios. I live in Chile, so i tried UGLL1 and UGKL1
4) Clear data of Google Services Framework, restart, etc
5) Used FasterGPS to set my location in the right area
6) Used GPS Status to improve AGPS
7) Change the build.prop file
I tried every method and the combination of them, but nothing has worked for me so far....
The GPS is very important for me because i use it to track my rides with Strava, and since the GPS is not working, i cannot start the application...
I really need help...
I use a Galaxy Nexus Maguro without Wallet and live in Chile. I cannot tell exactly when the GPS started to fail, but at least in the stock 4.1.2 it was working perfect, so i guess it started failing when i updated to CM10 and then to CM10.1.....
Ok try this if you haven't.
In settings turn off all location. Reboot
Make sure location reporting is still off.
Clear data on Maps force stop maps
Reboot
Clear data on maps and force stop again
Enable location
Get gps lock with maps or easy gps.
Might not work but I have had your same problem and this fixed it .... good luck
G-Nexus Sent
Hi!
Thanks for your answer, but unfortunately i've already tried this method with no succeed. I tried again but it didn't work...
Thanks anyway, i'm going to try to roll back to stock 4.1 (because the GPS was working with that version)
and if it really works i'm going to upgrade to 4.2 to see if i can find the error...
If someone else can give me a solution i'll appreciate it!
Sent from my Galaxy Nexus using Tapatalk 2
duqueso said:
Hi!
Thanks for your answer, but unfortunately i've already tried this method with no succeed. I tried again but it didn't work...
Thanks anyway, i'm going to try to roll back to stock 4.1 (because the GPS was working with that version)
and if it really works i'm going to upgrade to 4.2 to see if i can find the error...
If someone else can give me a solution i'll appreciate it!
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Flash stock, just to make sure it isn't hardware related.
pr0xyw0rm said:
Flash stock, just to make sure it isn't hardware related.
Click to expand...
Click to collapse
I already tried, but with Android 4.2.2 and it didn't work.
Before i flashed the 4.2.2 i was using stock 4.1 without problems, so i believe, and hope, that this is a software issue in the 4.2.2 update...
I'm going to try it now and i let you know.
Sent from my Galaxy Nexus using Tapatalk 2
My GPS got worse after upgrading to 4.2.2. Lock takes much longer and finds less satellites
- wore out your welcome
More info
Well, i returned to Stock Android 4.1.2 using Fastboot, but the GPS didn't work either... So i updated via OTA to 4.2.2 and the GPS didn't worked again...
But i noticed that the Nexus S belonging to my sister, wich uses CyanogenMod 10, is not working either!
So i have a doubt now: Is it possible that CyanogenMod could have ruined our GPSs? If i erased everything via fastboot, is it possible that some remains of CyanogenMod could still be breaking my GPS? Or are our GPSs, strangely, broken at the same time?!
Please Help!!!
GPS
duqueso said:
Well, i returned to Stock Android 4.1.2 using Fastboot, but the GPS didn't work either... So i updated via OTA to 4.2.2 and the GPS didn't worked again...
But i noticed that the Nexus S belonging to my sister, wich uses CyanogenMod 10, is not working either!
So i have a doubt now: Is it possible that CyanogenMod could have ruined our GPSs? If i erased everything via fastboot, is it possible that some remains of CyanogenMod could still be breaking my GPS? Or are our GPSs, strangely, broken at the same time?!
Please Help!!!
Click to expand...
Click to collapse
Did you try changing the file referenced in this discussion? It worked fine for me.
http://forum.xda-developers.com/showthread.php?t=1722983&page=2
If you've flashed the Google factory image, you have an active sim card with data connection, and gps does not work, then you have a hardware problem.
klobkelosh said:
If you've flashed the Google factory image, you have an active sim card with data connection, and gps does not work, then you have a hardware problem.
Click to expand...
Click to collapse
And is there a way to fix it?
duqueso said:
And is there a way to fix it?
Click to expand...
Click to collapse
Out of my realm of expertise, but I imagine the sirf chipset is not user serviceable. Your best bet would be Samsung factory service. I'm sorry.
Well, after giving up on trying to solve my GPS problem, it fixed itself.... i know that sounds weird, but the only thing that i did was update the CM10.1 to the latest RC2 and the problem was fixed, at least partially. Now it can find some satellites and it takes like 100 seconds.
The Gnex GPS isn't the best one, so it behaves a little weird some times, but at least is fixed now...
I really don't know what could be the problem, because i tried with almost any Rom, officials and no-officials...
Finally, the CM10.1 RC2 fixed my problem, hope this could help someone else.
Enable wifi & mobile network location in settings
Should be some code in 4.2.2 that prevents you from getting AGPS data if you disable the said option.
Enable wifi & mobile network location in settings
Should be some code in 4.2.2 that prevents you from getting AGPS data if you disable the said option.
Click to expand...
Click to collapse
The problem is fixed now, but i tried everything, from rolling back to 4.1 official to 4.2.2 official, CM9, CM10, CM10.1, AOKP, etc. So i really don't know what could be the problem. I also tried the solution that you told me, but that didn't work either.
Right now, with CM10.1 RC2 my GPS is working great and i'm able to use Strava again.
I've been having the same issue. I'm running a Stock Verizon Galaxy Nexus, on my third one now. I have tried everything from apps, to resets, to disconnecting the gps, and nothing seems to work. It just seems to take forever to get a GPS lock, sometimes I just have to reset it. Not sure the issue, and I can't seem to find anyone with answers either. IDK if anyone found anything??
wpeen001 said:
I've been having the same issue. I'm running a Stock Verizon Galaxy Nexus, on my third one now. I have tried everything from apps, to resets, to disconnecting the gps, and nothing seems to work. It just seems to take forever to get a GPS lock, sometimes I just have to reset it. Not sure the issue, and I can't seem to find anyone with answers either. IDK if anyone found anything??
Click to expand...
Click to collapse
Cold start gps can take up to 20 minutes outdoors with a clear view of the sky if you don't have current agps data. Thereafter, you should have quick starts for a day or two.
Is your data working properly? Do you have sync settings turned off?
klobkelosh said:
Cold start gps can take up to 20 minutes outdoors with a clear view of the sky if you don't have current agps data. Thereafter, you should have quick starts for a day or two.
Is your data working properly? Do you have sync settings turned off?
Click to expand...
Click to collapse
My data is working just fine, I actually have great 4g where I'm at, and all my sync is turned on. I've never had GPS problems with any of my other phones. I had an EVO 3D, and it worked great, cold starts would take seconds to find GPS.
wpeen001 said:
My data is working just fine, I actually have great 4g where I'm at, and all my sync is turned on. I've never had GPS problems with any of my other phones. I had an EVO 3D, and it worked great, cold starts would take seconds to find GPS.
Click to expand...
Click to collapse
And you have certified that all the gps settings/permissions are turned on? Even in the Google settings app?
Since you are stock, it might be helpful for diagnosis to preform a factory reset.
Edit - I see on another thread that you have already performed a factory reset. Next step would be to flash the factory image and see if that helps.
klobkelosh said:
And you have certified that all the gps settings/permissions are turned on? Even in the Google settings app?
Since you are stock, it might be helpful for diagnosis to preform a factory reset.
Edit - I see on another thread that you have already performed a factory reset. Next step would be to flash the factory image and see if that helps.
Click to expand...
Click to collapse
Thanks, I'll have to look up and see how to do that without root and boot loader unlocked, this is my third Galaxy Nexus from Verizon, they keep replacing it and I keep having the same issue
And yes all setting have been turned on, kind of driving me nuts
I'm sorry for you. it must be very frustrating.
As far as flashing an official factory image, I think you can do it unlocked if you have adb set up. Or use a toolkit, unlock, flash factory, relock (or not, why not keep it unlocked?)

Losing GPS signal while navigating

Hi,
I have a strange issue with my Gnex.
I used to run CM11 nightlies on my device, but I noticed that the device loses GPS signal while navigating (using Waze for example) and then it takes like 3-4 more minutes (if at all) to recover the signal.
So to test it, I flashed stock back (rom, recovery, kernel).
but I still have this issue. I cannot navigate 5 minutes straight without losing the GPS signal.
I tried to run GPSFix, but it didn't really help.
Any idea/suggestions what can I do?
thanks guys!
TopTomy said:
Hi,
I have a strange issue with my Gnex.
I used to run CM11 nightlies on my device, but I noticed that the device loses GPS signal while navigating (using Waze for example) and then it takes like 3-4 more minutes (if at all) to recover the signal.
So to test it, I flashed stock back (rom, recovery, kernel).
but I still have this issue. I cannot navigate 5 minutes straight without losing the GPS signal.
I tried to run GPSFix, but it didn't really help.
Any idea/suggestions what can I do?
thanks guys!
Click to expand...
Click to collapse
Is your device activated on a cell network? Gnex by default has assisted gps, so it needs a data connection to establish a fix. What you describe could happen as you leave Wi-Fi, have no signal, and it takes 3-4 minutes to grab the gps ephemeris data from satellites. Just a guess.
If this isn't your problem, have you tried using GPS status and toolbox app to Resetand redownload agps data?
klobkelosh said:
Is your device activated on a cell network? Gnex by default has assisted gps, so it needs a data connection to establish a fix. What you describe could happen as you leave Wi-Fi, have no signal, and it takes 3-4 minutes to grab the gps ephemeris data from satellites. Just a guess.
If this isn't your problem, have you tried using GPS status and toolbox app to Resetand redownload agps data?
Click to expand...
Click to collapse
Hey, thx for the reply.
Yes, I have a 3G connection and WIFI turned off.
I tried the toolbox, used it to reset data etc - but it didn't help
Well, the only way to truly know would be to flash a stock image and see if that works. If it doesn't, then you have a hardware problem.
Give GPS Test a go (search on Play store, I can't put external links here, it's the one from Chartcross Limited). It helped me a lot some time ago when I had your same problem.

Slim and fast rom

Hi to all
i'm using a defy+ only as GPS navigation. I'm also not using any simcard, just GPS and WiFI.
Do you know any stripped down rom with nothing installed except wifi and gps? I'm looking for a rom with maximum battery savings and quicker boot time.
Everything else is unneded.
ciripicchio123 said:
Hi to all
i'm using a defy+ only as GPS navigation. I'm also not using any simcard, just GPS and WiFI.
Do you know any stripped down rom with nothing installed except wifi and gps? I'm looking for a rom with maximum battery savings and quicker boot time.
Everything else is unneded.
Click to expand...
Click to collapse
You could try Maniac103's build of CM7.2. (It's available from his GitHub, and a slightly newer version is posted here.)
CM7.2 is one of the fastest and most stable roms for the Defy, and Maniac103's version has an LTO data download feature that helps a lot with GPS. If you enable that feature (it's either in settings or in the Defy Parts app, I don't remember exactly where), the phone will download the satellite Long Term Orbit data whenever you're connected to wifi. This LTO data is valid for either 7 days or 30 days (depending on which option you choose), and it helps the GPS to get a fix very quickly, even when you're offline. That's one of the few features I really miss from CM7.
Proverbs2 said:
You could try Maniac103's build of CM7.2. (It's available from his GitHub, and a slightly newer version is posted here.)
CM7.2 is one of the fastest and most stable roms for the Defy, and Maniac103's version has an LTO data download feature that helps a lot with GPS. If you enable that feature (it's either in settings or in the Defy Parts app, I don't remember exactly where), the phone will download the satellite Long Term Orbit data whenever you're connected to wifi. This LTO data is valid for either 7 days or 30 days (depending on which option you choose), and it helps the GPS to get a fix very quickly, even when you're offline. That's one of the few features I really miss from CM7.
Click to expand...
Click to collapse
Thank you for the response. My defy+ is actually on charging, when full charge i'l ltry to flash that rom.
So, with LTO data for 30 days, I can use WiFI (or any network connection) once in 30 days and getting fast fix for GPS?
ciripicchio123 said:
Thank you for the response. My defy+ is actually on charging, when full charge i'l ltry to flash that rom.
So, with LTO data for 30 days, I can use WiFI (or any network connection) once in 30 days and getting fast fix for GPS?
Click to expand...
Click to collapse
Ok, i've installed CM7. How can I check for LTO settings ?
ciripicchio123 said:
Ok, i've installed CM7. How can I check for LTO settings ?
Click to expand...
Click to collapse
I'm not using CM7 anymore (I've updated my Defy to Android 4.4 SlimKat), and I don't remember exactly where the LTO setting was. I think it was under Settings > Device settings, or something like that.
ciripicchio123 said:
So, with LTO data for 30 days, I can use WiFI (or any network connection) once in 30 days and getting fast fix for GPS?
Click to expand...
Click to collapse
Yes, you should get a faster GPS fix if you connect to wifi every 30 days. I believe it only downloads when connected with wifi, not a cellular data connection.
Proverbs2 said:
I'm not using CM7 anymore (I've updated my Defy to Android 4.4 SlimKat), and I don't remember exactly where the LTO setting was. I think it was under Settings > Device settings, or something like that.
Click to expand...
Click to collapse
Found it.
Yes, you should get a faster GPS fix if you connect to wifi every 30 days. I believe it only downloads when connected with wifi, not a cellular data connection.
Click to expand...
Click to collapse
Let me check. Before flashing a custom ROM, GPS fix in my actual location wasen't done in 10 minutes.
Now i've downloaded a monthly LTO data, let me see if fix is quicker.
EDIT: any way to greatly speed up the boot time? Almost 30 seconds stuck in motorola logo....
ciripicchio123 said:
Let me check. Before flashing a custom ROM, GPS fix in my actual location wasen't done in 10 minutes.
Now i've downloaded a monthly LTO data, let me see if fix is quicker.
Click to expand...
Click to collapse
Still no improvements, even with A-GPS and LTO data downloaded.
No fix in 5 minutes and just 2 sat found (as shown by GPS Status app). Same location with Galaxy S4 will result in a perfect fix in a couple of seconds.
ciripicchio123 said:
Still no improvements, even with A-GPS and LTO data downloaded.
No fix in 5 minutes and just 2 sat found (as shown by GPS Status app). Same location with Galaxy S4 will result in a perfect fix in a couple of seconds.
Click to expand...
Click to collapse
The first GPS fix always takes a while, unless you have an active data connection for A-GPS, which uses cellular towers and/or wifi to help determine your location. (Also, the Galaxy S4 has much faster hardware, but I'd guess that if you reboot your Galaxy S4 in airplane mode, and then try to get a GPS fix, it will take more than a few seconds.)
Make sure that the phone is outdoors under open sky, and that it is stationary while the GPS looks for the first fix. After that, subsequent fixes should be much faster, at least until the next reboot.
Proverbs2 said:
The first GPS fix always takes a while, unless you have an active data connection for A-GPS, which uses cellular towers and/or wifi to help determine your location. (Also, the Galaxy S4 has much faster hardware, but I'd guess that if you reboot your Galaxy S4 in airplane mode, and then try to get a GPS fix, it will take more than a few seconds.)
Make sure that the phone is outdoors under open sky, and that it is stationary while the GPS looks for the first fix. After that, subsequent fixes should be much faster, at least until the next reboot.
Click to expand...
Click to collapse
Is not an hardware issue. Defy doesn't see satellites. I've tried with S4 in airplane mode and fix is almost istant
ciripicchio123 said:
Is not an hardware issue. Defy doesn't see satellites. I've tried with S4 in airplane mode and fix is almost istant
Click to expand...
Click to collapse
Did you reboot the S4 in airplane mode, then try? That's pretty impressive if it can really get a cold-start fix that fast.
For me, a cold-start fix on the Defy usually takes a couple of minutes without a data connection, and sometimes it takes a minute or so before it even begins picking up satellites, so I guess that's normal for this hardware. On CM7.2 with the LTO data, though, it seemed a lot faster: a cold-start fix usually only took 30 seconds or so under a clear sky.
Proverbs2 said:
For me, a cold-start fix on the Defy usually takes a couple of minutes without a data connection, and sometimes it takes a minute or so before it even begins picking up satellites, so I guess that's normal for this hardware. On CM7.2 with the LTO data, though, it seemed a lot faster: a cold-start fix usually only took 30 seconds or so under a clear sky.
Click to expand...
Click to collapse
Even with LTO and a A-GPS data downloaded, gps fix requires many, many minutes.
After successul fix, subsequent fixes are faster even after a cold reboot (i don't know why, but is ok)
How can I decrease the boot time ?
ciripicchio123 said:
After successul fix, subsequent fixes are faster even after a cold reboot (i don't know why, but is ok)
Click to expand...
Click to collapse
Great! :good:
How can I decrease the boot time ?
Click to expand...
Click to collapse
CM7 boots about as quickly as any rom for the Defy, so you may not be able to make much improvement there. You could try uninstalling/disabling system apps that run at startup; that might help a little. Overclocking from the bootmenu will also help.
Proverbs2 said:
CM7 boots about as quickly as any rom for the Defy, so you may not be able to make much improvement there. You could try uninstalling/disabling system apps that run at startup; that might help a little. Overclocking from the bootmenu will also help.
Click to expand...
Click to collapse
could you tell me how to uninstall system apps and check what is starting at boot time ?
ciripicchio123 said:
could you tell me how to uninstall system apps and check what is starting at boot time ?
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Click to collapse
You could use an app like this to see what applications and processes are running after a fresh reboot.
You can disable system apps using the android settings menu. I don't remember exactly how to do it on CM7, but on Android 4.4 you can manage apps under Settings > Apps > All. (You can also access the app manager by hitting the menu button > Manage apps.) Select the system app you want to disable, and click the "disable" button. I think the procedure was similar on CM7.
Alternatively, you can just delete a system app using a root-enabled file explorer like ES File Explorer. In ES File Explorer, go to Tools and enable the "Root Explorer" option, then navigate to the system/app directory of your phone's internal memory and delete whatever apks you don't want. (Be careful not to delete an app if you don't know what it does, or you might cause more problems. If you run into errors or your phone is unable to boot after deleting system apps, just re-flash the CM7 zip from recovery.)
Omnirom
ciripicchio123 said:
Hi to all
i'm using a defy+ only as GPS navigation. I'm also not using any simcard, just GPS and WiFI.
Do you know any stripped down rom with nothing installed except wifi and gps? I'm looking for a rom with maximum battery savings and quicker boot time.
Everything else is unneded.
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Hi, I'm also using my Defy+ for offline GPS (without sim, too)
Currently running Omnirom builds by Struq and Kayant (look in the "Omnirom for Defy" thread).
- Boot time is approx. 1'30, but no big deal for me (I'm not sure you will find custom roms with really faster boot times?)
- GPS hooking up takes some minutes (~maybe 3-5 mins) but I'm not even sure if I'm using a gps fix or not!
- battery usage : GPS & wifi are the most battery hungry components anyway
- I don't use Gapps , so that would qualify for "stripped down", only F-droid repository for apps, and the great OsmAnd for GPS nav :good:
Hello,
I have 2 defy "MB525 green lens" phones. On one of them (bought new) GPS works very well, 10-12 sattelittes at all time, first fix in cca 4 minutes withouth data connection. The only thing I've noticed is that the GPS really hates to "cold-start" when the phone is moving, i.e. inside a car. After fix, the signal strength ans sattelite count is OK.
On the second defy, GPS hardly sees a satellite. But the phone is from a hill climber, and I've got the phone with a smashed screen, the guy told me the phone falled some 30 m before hitting the ground... On opening it up I've noticed the PCB is chipped on one of the upper corners. New digitizer and everything else works....except for that GPS.
Perhaps the GPS chip is the most fragile component inside the phone... I don't know. But I think the software is not the cause here.

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