GPS lock problems on i9505 - Galaxy S 4 Q&A, Help & Troubleshooting

Hi all,
I have a GT-I9505, running stock ROM I9505XXUGNG8 (KitKat 4.4.2), and I can NOT get the GPS to work. I've used GPS tester programs "GPS Test" and "GPS Status" and what I see is that the phone sees anywhere from 12-20 satellites, but does not get a fix on any of them. Once in a blue moon I'll get 1 or two to lock. I am outside or in the car when I use the tester programs, so no interference from buildings.
It is rooted, has busybox and CWM recovery on it. It does not have Yahoo Weather (just the weather app that came with the phone). I don't know if it is hardware or software at this point. It does seem to have the lovely Knox bootloader. (SE for Android status - Enforcing)
*#1234# tells me:
AP: I9505XXUGNG8
CP: I9505XXUGNG8
CSC: I9505OXAGNG8 (but I use the phone in Israel).
I've been trying to find a case that is similar to mine, but I haven't found one yet. Can anyone help me out here? I was going to re-flash the modem part of GNG8 just to see if that would help, Maybe going to CyanogenMod or reflashing the stock would help? What about GNH8? The I9505 is not sold in Israel at this time, so I have not found any Israel-specific ROM/CSCs for it. I don't know if the CSC for the I9500 (which is sold here) would help or hurt.
There are a lot of things I can think of to waste my time with, but I'm hoping some of the smart people in this forum will be able to help make it a shorter process.

Mate I've had this problem since I flashed |ROM|★GE★|►VJUGNH2◄|►41◄|.
I've tried CM11, I've tried stock for my area (UK)
I9505XXUGNG8_I9505BTUGNG2_I9505XXUGNG8_HOME.tar (stock ROM)
BL_I9505XXUGNG8_user_low_ship_MULTI_CERT (stock bootloader)
GSM_Modem_XXUGNG8_and_LTE_Modem_XXUGNG8.tar (stock LTE modem)
and to no avail. I keep having GPS lock issues. I did flash Adams Kernal when flashing the GE and CM11 ROMS. But surely flahsing stock everything should fix the bloody GPS

artnada said:
Mate I've had this problem since I flashed |ROM|★GE★|►VJUGNH2◄|►41◄|.
I've tried CM11, I've tried stock for my area (UK)
I9505XXUGNG8_I9505BTUGNG2_I9505XXUGNG8_HOME.tar (stock ROM)
BL_I9505XXUGNG8_user_low_ship_MULTI_CERT (stock bootloader)
GSM_Modem_XXUGNG8_and_LTE_Modem_XXUGNG8.tar (stock LTE modem)
and to no avail. I keep having GPS lock issues. I did flash Adams Kernal when flashing the GE and CM11 ROMS. But surely flahsing stock everything should fix the bloody GPS
Click to expand...
Click to collapse
It looks like it may have been the GPS antenna not being connected properly when it was built. I tried SlimKat and CM11 M9 to no avail. I thought I would see if the GPS antenna was physically broken, and it looked fine. But I did hear a click when I was working with it that made me think that it wasn't attached properly. I unplugged both ends, plugged them back in, and now all 3 roms work with the GPS. So I restored my nandroid backup of the stock GNG8 and life is good. Yeah, there's Samsung bloatware, but there are enough other things in the stock rom that I think I'll just stick with it for now.
So long and thanks for all the fish,
Wayne

Well, maybe I spoke too soon? It's true that detaching and re-attaching the GPS antenna makes the GPS work again, but it only works for about a day and then goes dead again. It starts working again when I take off the back and detach/re-attach the antenna. I can't continue to constantly go through that cycle. Is it bad hardware? Do I need to find a Samsung repair shop somewhere? Or is there a software setting I'm missing somwhere?
Thanks!

Hey, just a finall wrap-up for the thread. Long story short, I eventually did a complete wipe of the phone - dalvik, cache, system, data - everything, and then did a clean installation of one of the ROMs here (Optimized CM 12.1). At that point everything snapped back to life, the GPS locks quickly, it's all the way it should be. So I guess there was something deep in the system partition that was messing it up, and it took a total wipe to clear it out properly. Happy phone user now.

Related

Soft reboots in Kitchen-Builds

This doesn't belong here, but my lack of writing stuff prevents me from posting this where it is supposed to be
If possible, move this post into this thread: http://forum.xda-developers.com/showthread.php?t=1115958
So. JV5/JV9/JVO builds from kitchen with CF and HC kernels cause soft-reboots on my SGS I9000. I tested all of them by now. Tried the Talon Kernel 0.2.1 with JV5 and JV9, which caused boot-looping.
So I kept reading and found out that I was not the only one having this problem, but it seemed to be solveable by flashing a stock JVO first.
I already had Gingerbread Bootloaders, flashed JVK a while back, so I tried a few no-wipe ROMs as I mentioned above. All with the same problem. I lost connection to my cell network and it didn't come back. Somehow connected to the WiFi, I suppose. I could reproduce it by getting a GPS fix. But that was more or less related to my phone using wireless networks for positioning, which means that it switches on WiFi for just a second but without telling me.
Anyways, I thought I might have been wrong about the bootloaders being the reason to flash the stock firmware, so I did as it said: it specifically said JVO+ in the tutorial, so I went through the hassle and did the following:
- Flash an entire JVO firmware
- Reboot
(that one took a while)
- Full factory reset via dialer code
(that one took a while, too)
- reboot again, this time into bootloader, to flash a hc-speedmod kernel, to have root access and CWM
- reboot again, into CWM, to flash one of the ROMs I tried earlier
I ran back into my old trouble. So this is not an issue of the GB bootloaders or a previously installed version. The phone keeps soft-rebooting.
I re-installed the stock JVO firmware and flashed the speedmod kernel again, rooted via CWM menu and now I am just recovering my important applications via Titanium. Nothing bad happened yet, and it would have, with any of the kitchen ROMs Trust my, I almost tried them all
Nobody else wrote anything on that, so I thought I'd let you know there's no need to wipe all your data (like I did) and hope for the soft-reboots to be gone.
There's something seriously wrong there.
Anybody else having the same issues?
Cheers.
Andreas
Yep, I had a whole lot of trouble with the Kitchen JV5 release yesterday, ended up giving up and goind back to Darky's 10.1. Mine would boot, and when doing a media scan, would soft reset itself. I could get it to work eventually by powering down before media scanner completed then powering up. Bit odd - tried three builds of JV5 with different kernels but they ended up all being screwy. Ah well, will see what JVP brings...
glad to hear that I'm not the only one crazy enough to wipe his entire phone for a new (and fast) operating system.
Anyways... I am now back to my old status. Re-installed most of my apps, sync behavior, BT devices, wireless APs, etc. blayallah...
JVO with a hc speedmod kernel is by far the best and fastest ROM I have run so far.
Kitchen builds are dead to me until some of the people who ran into the same problems as I did confirm that those issues have been dealt with.
Just for your information:
- battery life seems amazing, at least regarding to the sensor. Hope it's any accurate. Had it unplugged over night and lost 22% battery life with WiFi on in a bit more than 10 hours
- it responds VERY fast, compared to any other ROM I had before
- bluetooth devices have to be set up again, for some reason my phone doesn't like my headset any longer. I can hear people talk but they can't hear me. However, the microphone does work when I use my headset for text2speech. Weird.
Anything else seems just the way it was before. Just faster.
I'd be glad to hear if someone could still help me out with the soft-reboots, if somebody else decides to use the kitchen builds either way I won't until somebody else tells me it's working now
Andreas
Why would u need to SOFT reboot ?
I don't *need* to soft-reboot. It just does that. Modem crashes, lost network connection. The phone doesn't actually entirely crash, it just restarts the network service and your phone is going to be offline.
That's a soft-reboot. No entire system crash or kernel panic, just the modem crashing.
That does happen when things are messed up
I'm having the same issue: on a JV5 and JV9 RomKitchen build with a JVO modem, as soon as I get a GPS lock, the phone soft-reboots.
paour said:
I'm having the same issue: on a JV5 and JV9 RomKitchen build with a JVO modem, as soon as I get a GPS lock, the phone soft-reboots.
Click to expand...
Click to collapse
guys, why dont you try the JVP v7 builds, its much better.
also, please select the default boot animation, else it will go into bootloop.
I can confirms that doing a no-wipe upgrade to JVP v7 fixed this soft-reboot issue.
Thank you for that information. I'm not in a flashing mood right now JVO is running just fine right now. Anything about JVP v7 that's worth the try?
JVO is running fine for now. So I'm not feeling like flashing everything over again.
Is there a simple way to just dump my current phone status, its ROM and everything somewhere to my harddrive and re-flash all of that over in case anything goes wrong?
andreas1979 said:
Thank you for that information. I'm not in a flashing mood right now JVO is running just fine right now. Anything about JVP v7 that's worth the try?
JVO is running fine for now. So I'm not feeling like flashing everything over again.
Is there a simple way to just dump my current phone status, its ROM and everything somewhere to my harddrive and re-flash all of that over in case anything goes wrong?
Click to expand...
Click to collapse
its pretty much the same stuff except very good speed optimizations, 2.3.4, and few UI tweaks.
its been the same since the first gingerbread leaks. we flash it for new builds dont we
...and now it's just pissing me off. JV9 Kitchen Build. On GPS Lock I get soft reboots. What the hell?!
Trying another one now... crap. I thought That would be fixed by now.
So. Kept me busy, just to be sure: Each and every combination I tried using 2.3.3 from the kitchen caused soft-reboots on GPS fix. The phone was very fast with the Talon Kernel and Ext4 FS, but I can't live without GPS
So I tried a non-wipe install over one of the not working 2.3.3 roms.
I'm on JVP now, not as fast as Talon, so it seems, but GPS works, getting a fix at my window within 5-10 seconds, no crashes whatsoever.
So. If anybody else experiences crashes like the ones I mentioned in the opening post, I can also confirm that the JVP ROMs seem to fix the problem.
Andreas
...as much as I hate talking to myself, it's still regarding the same issue, so I have to ask:
Saw the new kitchen build (JVR).
Two questions:
1. Is the soft-reboot issue finally fixed?
2. Is there a little language-switcher-button on the bottom left of the swype keyboard?
I use the JVO swype, and it has that button, and the new ones don't seem to have it any more? It's really nice if you need to switch between two languages all the time and you don't want to go into settings every time you need to switch.
Anyone know that? http://t1.gstatic.com/images?q=tbn:ANd9GcQC6orm5ZMAju2VzczB3MCbwEPeSH9yrYI6wxfdDGFCvkdpe7lQRg <- that one right here has it. Took me a long time to find that, because no swype version but JVO seems to have that feature.
I'd be glad about any answers to those two questions.
Andreas
andreas1979 said:
...as much as I hate talking to myself, it's still regarding the same issue, so I have to ask:
Saw the new kitchen build (JVR).
Two questions:
1. Is the soft-reboot issue finally fixed?
2. Is there a little language-switcher-button on the bottom left of the swype keyboard?
I use the JVO swype, and it has that button, and the new ones don't seem to have it any more? It's really nice if you need to switch between two languages all the time and you don't want to go into settings every time you need to switch.
Anyone know that? http://t1.gstatic.com/images?q=tbn:ANd9GcQC6orm5ZMAju2VzczB3MCbwEPeSH9yrYI6wxfdDGFCvkdpe7lQRg <- that one right here has it. Took me a long time to find that, because no swype version but JVO seems to have that feature.
I'd be glad about any answers to those two questions.
Andreas
Click to expand...
Click to collapse
I have tried the JVR base available in the kitchen---nothing to write home about,went back to STOCK--far better!I imagine the Kitchen as we used to know and use way back is now a thing of the past and the last nail was Tricky also leaving...
andreas1979 said:
glad to hear that I'm not the only one crazy enough to wipe his entire phone for a new (and fast) operating system.
Andreas
Click to expand...
Click to collapse
Guess that makes me crazy too
I've also been tinkering with customising ROM's myself to get to the boot-loop - getting pretty proficient at it now (guess I should read up a little more first)

[Q] GPS not working

GPS seemed to have been working up until I flashed one of the CM11 or other Kit Kat roms. I've since gone back to CM10.2 (stable), but I can't get a gps lock. Does anyone have suggestions to get this working? I have the Verizon version.
I've tried resetting A-GPS data with the GPS Status app and also by setting the regions with Android Tweaker. Neither seems to have done anything. Really hoping my GPS radio isn't borked.
compulsiveguile said:
GPS seemed to have been working up until I flashed one of the CM11 or other Kit Kat roms. I've since gone back to CM10.2 (stable), but I can't get a gps lock. Does anyone have suggestions to get this working? I have the Verizon version.
I've tried resetting A-GPS data with the GPS Status app and also by setting the regions with Android Tweaker. Neither seems to have done anything. Really hoping my GPS radio isn't borked.
Click to expand...
Click to collapse
Just had this same problem, I had to flash back my original nandroid (stock ota) to get a gps lock, thought my hardware was crapped as well. But I am guessing if you dont use your gps for a long time it loses the info for sats. I tried flashing PA ram, gummy, CM11 nothing would get a lock, so I said **** it, going to return it, put stock image back on and wallah, it came back, reflashed my OSE rom and it worked, worked in pa again as well and gummy.
I also tried the gps fix lg g2 zip thats out there, nothing, tried the recalibration from 5 different compass apps and gps "fix apps" nothing.
ars0n said:
Just had this same problem, I had to flash back my original nandroid (stock ota) to get a gps lock, thought my hardware was crapped as well. But I am guessing if you dont use your gps for a long time it loses the info for sats. I tried flashing PA ram, gummy, CM11 nothing would get a lock, so I said **** it, going to return it, put stock image back on and wallah, it came back, reflashed my OSE rom and it worked, worked in pa again as well and gummy.
I also tried the gps fix lg g2 zip thats out there, nothing, tried the recalibration from 5 different compass apps and gps "fix apps" nothing.
Click to expand...
Click to collapse
I unfortunately lost my stock ota backup . I tried flashing this (http://forum.xda-developers.com/showthread.php?t=2533018), and I got stuck in the Verizon bootloop. I'm using TWRP 2.6.3.3.
I'm unfortunately on a Mac and can't follow the steps outlined here (http://forum.xda-developers.com/showthread.php?t=2432476). Any help would be great. This is driving me crazy!
compulsiveguile said:
I unfortunately lost my stock ota backup . I tried flashing this (http://forum.xda-developers.com/showthread.php?t=2533018), and I got stuck in the Verizon bootloop. I'm using TWRP 2.6.3.3.
I'm unfortunately on a Mac and can't follow the steps outlined here (http://forum.xda-developers.com/showthread.php?t=2432476). Any help would be great. This is driving me crazy!
Click to expand...
Click to collapse
Flash back the original 2.6.3.2, (follow the first twrp/rooting steps that you did, but minus the rooting, just the installing of twrp. Then flash one of the stock OTA images from the verizon forum.
ars0n said:
Flash back the original 2.6.3.2, (follow the first twrp/rooting steps that you did, but minus the rooting, just the installing of twrp. Then flash one of the stock OTA images from the verizon forum.
Click to expand...
Click to collapse
I ended up downloading and flashing a Malladus ROM (based on stock). I managed to get a GPS lock after that (hooray!). I'd assume if I jumped back to CM now, I'd be all set.

Need an idiot out with GPS issues

I never had to use my GPS til now and found out it cant lock on to any GPS sat. Ive had no other issuses with this phone
This is all the things ive done. I've enable TMO AWS since day one. I'm a TMO user that was a given.
My phone had the old orginal baseband, i think its MDC, then i upgraded to MDL and now i'm on the new NB1.
Ive bounced around all KK roms and even some older roms i still had saved. Nothing can get a GPS lock. I'm leaning now towards something physical, but Google now works and they can trianglulate via cell towers.
Ive 99% sure ive enable all GPS items. Location settings are on high accuracy.
Ive been using GPS status apps to help get a better location and nothing seems to be working.
Does playing around with Kernals help? I never installed one before or played with any of those. I need GPS to be working now so if i cant figure it out soon, i might just jump ship to the nexus/s5/iphone
bump up. Anyone have suggestions?
ive tried many different roms, Touchwiz and not touch. All diffrent basebands. I dont know what kernal work with what roms so ive been avoiding that
A kernel is not going to help. Have you gone back to stock rom and still have the issue? It sounds more like it's a hardware issue. Like the gps antenna is not working.
sadly i'm thinking the same thing. It looks like a cheap part but no idea on taking it apart just yet.
I always thought a kernal acted like a driver for computers,
turtle* said:
sadly i'm thinking the same thing. It looks like a cheap part but no idea on taking it apart just yet.
I always thought a kernal acted like a driver for computers,
Click to expand...
Click to collapse
The kernel is the boot image and in essence it interprets between the software and hardware. If you've flashed other roms you've flashed a kernel each time.
jd1639 said:
The kernel is the boot image and in essence it interprets between the software and hardware. If you've flashed other roms you've flashed a kernel each time.
Click to expand...
Click to collapse
ah, understood. I thought it was like the baseband where i had to manual change it.
Does anyone know where the GPS antenna is located at? Is it a part i can swap out or attached the main board. I just pulled apart the phone looking for obvious parts not being connected and everything looked good.
Ebay listings GPS antenna as the 3g blue cable that runs down the side of the battery. I dont think thats the GPS antenna but it does cost a small amount but i dont think that will help.
before you tear it apart try what jd suggested and odin back to stock. you may want to backup and format your internal and ext sdcards also. they can harbor old junk that may effect new roms.
also, are you wiping all including system before flashing and on your phone and some roms i believe you have to odin a modem.bin file as part of flashing. am not familiar with that stuff as i am i337 and never used odin. "yet"
not sure if any of it will help--but--
good luck
Might need more info on what our suggesting.
I'm wiping data and the option under data in clockworksmod.
I don't have anything important, everything is cloud.
Sent from my GT-I9505G using Tapatalk
I think he is suggesting that first you get the STOCK MDL Odin package and flash it. Then wipe all data, dalvich cache, and internal sdcard (remove your external sdcard before hand). Then power it up and IMMEDIATELY turn OFF WiFi, you do NOT want it to try to update on its own. Now check GPS and see if it works.
If it does work now (the FIRST LOCK can take a bit of time) Then again use casual+motochopper to root and install twrp. Then flash a good ROM. Once that is done you can check GPS again and make sure it works, it may take a bit since it will be the first lock again (I always had trouble with MK2 modem for some reason. All the rest worked perfectly).
Or just make sure you have the ROM you want to run on a external sdcard. Then remove it for safe keeping. Now go into twrp/clockworkmod and wipe data factory reset/ cache/ dalvich cache/ and sdcard. Power off the phone after it is done and reinsert your external sdcard. Do not boot up but go directly to where you have the ROM at on your external sdcard CIA twrp/clockworkmod and flash the ROM. This will give you a perfectly clean slate. Now once it is done and booted up let it sit without touching it for at least 5 minutes. Then check GPS. If it works you are good to go. Then download any of your apps from the play store (not from titanium backup in case some system setting are being reinstalled with something). Once you have your apps back check GPS again to make sure one of them hasn't caused an issue with your GPS. If all is still good use titanium backup to recover your DATA ONLY for the installed apps.
Sent From My Spiderman,Ironman,Red,Dark Blue,Green, GreyedOut BadAss Themed I337
I have no idea why
I had the same problem, and I just fixed it too.. I don't know if this will cause the problem but here it goes.
I found this solution from the forum, but forgot where..
1) I installed the rom (AOSP) I wanted and checked if gps worked (but didnt work, checked with GPS Status)
2) Went to recovery, nandroid the Rom
3) Clean install to Rom that GPS worked (TW Rom) and again checked if gps worked (and worked, also checked with GPS Status)
4) While leaving the GPS toggle on, went into recovery, and without wiping anything, restored the AOSP rom
5) booted checked GPS Status and I was able to see the satellites..
I have no idea right now if this will cause any trouble.. but at least gps works in aosp..
I'll update again if I face any problems
Good luck
Its working now. Not 100% sure what the problem was but that's for everyone with the suggestions.
I flashed about 15-20 different Roms from touchwiz to aosp and miui thing.
Opened the phone up and looked for basic things not connected.
Removed my case and wireless charger insert.
Did the MDB Odin flash. With stock ROM. It didn't still didn't work.
Finally gave up and flashed back old GE ROM. And all of a sudden it works.
I think the Odin wipe and SD card wipe had a big role but not sure. Either way it works now. Might not be the fastest connection to GPS as it takes a few moments now but it works. I'm normally locked on to 13/21 SATs out there in a matter of 2-3 mins.
Now that it works I'm a little weary of trying MDL
Sent from my GT-I9505G using Tapatalk

[Q] [solved] GPS Not Working After Cyanogen Mod Install

Hi All,
I just got a new used Samsung Galaxy S4 on Sprint and brought it over to Ting (way, way, way cheaper). I got everything working with the stock ROM, including GPS, but I wanted to install Cyanogenmod, so I rooted it, flashed TWRP 7.8, and flashed the latest Cyanogenmod (snapshot M12), with Gapps, and a zip file with the Ting data XML files to get 3G and LTE working.
Everything seemed to work great, but then while driving I noticed that the GPS just did not get a lock. After trying for an hour, it still had nothing. I installed GPS Status and saw that it had no satellites. Clearing the GPS cache and re-downloading data with that app did not solve the problem. I tried GPS Doctor without success and the GPS fix equally without success.
I rebooted, then factory reset, then erased everything and flashed the latest CM nightly, all with no success.
I found some similar problems online at these places:
http://myblog-online.co.uk/2013/12/the-continuing-saga-of-my-galaxy-s4-custom-roms/
http://forum.cyanogenmod.org/topic/98811-gps-not-working-23rd-nightly/
http://forum.xda-developers.com/showthread.php?t=2172670
These are all old and none gave me anything that useful. Is it a GPS radio issue? Is there anything I can do?
I also just found this page: http://wiki.cyanogenmod.org/w/Known_Issues_page_for_d2lte, but it is for the S3, not sure what to make of it.
I made a nandroid backup of my stock rom, but then I copied it to my computer, and when I copied it back again it didn't work. TWRP failed to restore with the error "No partition selected for restore".
My plan now is to flash the stock rom with odin, confirm that GPS works there, and then try again, but this is becoming a huge time sink and I have a lot of other things to do.
Does anyone have any ideas how I can fix this? I am pretty sure it isn't a hardware issue.
MikeDacre said:
Hi All,
I just got a new used Samsung Galaxy S4 on Sprint and brought it over to Ting (way, way, way cheaper). I got everything working with the stock ROM, including GPS, but I wanted to install Cyanogenmod, so I rooted it, flashed TWRP 7.8, and flashed the latest Cyanogenmod (snapshot M12), with Gapps, and a zip file with the Ting data XML files to get 3G and LTE working.
Everything seemed to work great, but then while driving I noticed that the GPS just did not get a lock. After trying for an hour, it still had nothing. I installed GPS Status and saw that it had no satellites. Clearing the GPS cache and re-downloading data with that app did not solve the problem. I tried GPS Doctor without success and the GPS fix equally without success.
I rebooted, then factory reset, then erased everything and flashed the latest CM nightly, all with no success.
I found some similar problems online at these places:
http://myblog-online.co.uk/2013/12/the-continuing-saga-of-my-galaxy-s4-custom-roms/
http://forum.cyanogenmod.org/topic/98811-gps-not-working-23rd-nightly/
http://forum.xda-developers.com/showthread.php?t=2172670
These are all old and none gave me anything that useful. Is it a GPS radio issue? Is there anything I can do?
I also just found this page: http://wiki.cyanogenmod.org/w/Known_Issues_page_for_d2lte, but it is for the S3, not sure what to make of it.
I made a nandroid backup of my stock rom, but then I copied it to my computer, and when I copied it back again it didn't work. TWRP failed to restore with the error "No partition selected for restore".
My plan now is to flash the stock rom with odin, confirm that GPS works there, and then try again, but this is becoming a huge time sink and I have a lot of other things to do.
Does anyone have any ideas how I can fix this? I am pretty sure it isn't a hardware issue.
Click to expand...
Click to collapse
That's is pretty much what you have to do. Its go back to stock and get a lock there in maps. When you have a lock just go back to recovery and flash your custom ROM of choice. That is pretty much the only fix.
Sent from my GT-I9505G using XDA Free mobile app
ROMANTiC KiD said:
That's is pretty much what you have to do. Its go back to stock and get a lock there in maps. When you have a lock just go back to recovery and flash your custom ROM of choice. That is pretty much the only fix.
Sent from my GT-I9505G using XDA Free mobile app
Click to expand...
Click to collapse
Thanks ROMANTiC KiD,
Good to know that I am heading down the right path before I spend a lot of time on this.
Should I not erase everything when I flash the custom ROM? I am pretty sure last time I used TWRP advanced erase to clear everything on the phone before installing. Should I just do a regular factory reset in TWRP to install CM in order to keep GPS functionality?
Thanks!
MikeDacre said:
Thanks ROMANTiC KiD,
Good to know that I am heading down the right path before I spend a lot of time on this.
Should I not erase everything when I flash the custom ROM? I am pretty sure last time I used TWRP advanced erase to clear everything on the phone before installing. Should I just do a regular factory reset in TWRP to install CM in order to keep GPS functionality?
Thanks!
Click to expand...
Click to collapse
Yes sir you can factory reset in twrp just remember to back up your files first! And you should still retain GPS lock.
Sent from my GT-I9505G using XDA Free mobile app
ROMANTiC KiD said:
Yes sir you can factory reset in twrp just remember to back up your files first! And you should still retain GPS lock.
Sent from my GT-I9505G using XDA Free mobile app
Click to expand...
Click to collapse
Thanks for the confirmation. I did exactly that and I can confirm that it did indeed work.
Thanks so much for the help.
Hi all,
Sorry to resurrect an old thread, but I am having this issue and the stock firmware flash isn't solving the issue. It is all very odd because it doesn't actually retain any kind of lock after flashing. I'm following instruction on here, but after locking gps on stock, then going to CM I cannot get a fix. It either had a massive radius on Maps, or it just locks to my home or work location.
Since trying much more I have managed to get the occasional satellite lock via GPS Locker, but even then as soon as I move from either my house or work, it can't find anything to lock onto and just defaults to a static location.
Is there anything you would recommend? I have 2 Samsung GS4's and they both exhibit the same problem. I have also tried this on an S4 Mini, but that retained lock just fine. I'm really confused as to what to actually try. If you could recommend anything I'd be very grateful.
Again, I'm sorry to res an old thread, but no one has been replying to the one I started for this issue :/
Your problem may be that there is some new issue with the newer firmware. I had success by first flashing the *old* firmware (you can download it from my dropbox here: https://www.dropbox.com/s/o3f3ynyezyy4yw9/L720VPUFNAE_L720SPTFNAE_L720VPUFNAE_HOME.tar.md5?dl=0) and then upgrading to the second to last firmware update for the GS4: which gives you Android 5 but without fixing the MMS bug.
After that I flash TWRP with Odin, and then do a full erase in TWRP followed by flashing the latest CM. That series of steps works for me every time, although I found that large changes to my physical location (e.g. flying to England from California) cause it to break again. I actually had to sit in a cafe in an English airport with my laptop out flashing my phone back to stock just so that I could use Google maps to get to my mother's house. It was pretty ridiculous. Because of that and other issues, I now just use stock. I hate it, but I do it anyway. Good luck.

GPS broken 5.0.2 update

All my navigation apps are broken now. GPS will disconnect after few seconds..
https://code.google.com/p/android/issues/detail?id=81140
I knew i wasn´t alone... i had to go back to Kitkat last month (i was on Brazilian 5.0.2) because i needed the GPS on my vacation. This is a serious bug and Google should fix it asap.
I experienced the same symptoms in KitKat also. That's why I wanted to try Lollipop. No Luck! I think it was the Google Play Service update acting up!
Is it a bug releated to the LOLLIPOP or not?
There is no GPS issue in any version of Android (4.3, 4.4.4 or 5.0.2) on Moto G (2013.) I should know; I use it for hours almost every other day. You guys need to do a factory reset, or wipe 'userdata' and fastboot flash a stock firmware image.
are you sure wiping the userdata will fix it??
crazypotato said:
are you sure wiping the userdata will fix it??
Click to expand...
Click to collapse
I'm very confident it will.
It just keeps happening, not even a clean sfb flash (Brazilian lollipop sfb) helps. Now im on German 5.0.2 (wiping everything of course) and its exactly the same. It is a real issue at least to me, and its happening on almost every phone with lollipop as you can see in the AOSP bug tracker. The GPS locks fine (but with a slightly weaker signal) and every 5 minutes the signal randomly gets lost, then it locks again after a minute or so, then repeat. This only happens if you are moving on a vehicle though, nothing seems wrong in my house or when im not moving, except the slightly weaker signal compared to Kitkat. Some people on other forums (Nexus 5) say that it could be related to the Wi-fi and/or data connections. I hope Google fix this on 5.1
Thanks for sharing your experience. I will hope Motorola will resolve it as quickly as possible with 5.1.
@mato_d007, did you use the command: fastboot erase userdata - when flashing the factory firmware?
/system/etc/gps.conf - contains entries for different regions: Asia, EU, US. Perhaps try enabling the EU server instead of the default US one. Alternatively, unrooted people can try GPS Status & Toolbox.
lost101 said:
@mato_d007, did you use the command: fastboot erase userdata - when flashing the factory firmware?
/system/etc/gps.conf - contains entries for different regions: Asia, EU, US. Perhaps try enabling the EU server instead of the default US one. Alternatively, unrooted people can try GPS Status & Toolbox.
Click to expand...
Click to collapse
Tried GPS status app, doesn't do much. I figured that if I toggle wifi on and off with GPS in searching mode. It will get a position eventually. But it will lose signal again after awhile.
I did a re-flash firmware, and use gps test and gps status and nothing happen. I change a gps.conf from system/etc manualy, and nothing help to fix gps.
Something is wrong, because gps status show inmediately many in view, but not fix anyone.
Seriously, what is the point of doing soak test? They didn't test the gps funtionality obviously. Sad! Well, maybe get an external gps receiver for now and use an app to hook it up.

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