Database Develop

How bad the GPS problem is?

Lets see if I understand this correctly....
on the samsung galaxy s GPS system, there are 2 options:
1)Use wireless networks: Set the device to use the
wireless networking to indicate your location
2)Use GPS satellites : Enable the GPS receiver to indicate your location
For now, we know that using the option 2 gives us crappy results (loosing signals, cannot lock sattelites, jumping around etc)
Now, for option 1: choosing option 1 means that launching the maps application should indicate where your location is currently by using some kind of triangulation method based on the availability of GSM signal, so it should even work when you are indoor or whenever there is a GSM signal......
But apparently on this phone, it only shows your initial location, then after that even if you have moved 1 km from your initial location, the location indicator arrow is stuck at your initial location, meaning that it doesnt track you and your movement, which means both options simply dont work on this phone....
On my wife's iphone, the GPS functionality works wonderfully even when i am inside a building and it keeps updating your location as you move continuosly.
It just shows you how careless and hasty samsung is in launching this product that even the simplest form of GPS functionality, one that is based on GSM triangulation method, also doesnt work..... and they still went ahead with the launch.....

Absolutely no problems with GSM or GPS positioning now that I'm using I9000XWJG5. Locks on satellites within 22 seconds from switch on. Thats at 30m precision. After 10 seconds more gets to 5m precision.
This is from inside my building. (Using GPS Status to check)

Same here. Your wife's phone probably also uses the mobile network to keep location inside buildings, or wireless networks. Try enabling skyhook, that is all i did.

used skyhook, and assited mode, accuracy set to 50, changed supl/cp settings, but compared to my g1 or hd2 or e61 or 10 year old bt/gps mouse the gps quality is just rubbish. (XXJF3)

no problem even without skyhook, but using skyhook gets locking much faster
i'm comparing it to my old HTC Athena, which takes sometimes over 5min to lock to 1 satellite in the great white open sky.... sigh...
sometimes it wont even lock if the weather is poor, takes like 30min or more to lock, under those conditions.
simply insane.
so SGS i9000 is like a dream to use.

g1 / hd2 / e61 only take seconds to get a full lock with accuracy about 3m. in my opinion skyhook and gps plus are needless if you have a working cb a-gps.

From my experience its the rom. As my gps worked fine with default FE3 (optus au) rom even indoors but when i flashed G5 (latest euro) i could only lock onto one sat outdoors even with skyhooks setting. Then i installed Samset 1.2 update.zip the gps works again, thats just my 2cents

widjaja74_us said:
It just shows you how careless and hasty samsung is in launching this product that even the simplest form of GPS functionality, one that is based on GSM triangulation method, also doesnt work..... and they still went ahead with the launch.....
Click to expand...
Click to collapse
For the record I haven't had any issues with GPS other than it being fair slower than my Milestone.
Didn't you sell your Galaxy S anyway?

Unimaginative said:
For the record I haven't had any issues with GPS other than it being fair slower than my Milestone.
Didn't you sell your Galaxy S anyway?
Click to expand...
Click to collapse
Hey mate, I think I've seen you around the WP forums.
Quick question for you - I have a Milestone and am currently contemplating throwing it on eBay and grabbing the Galaxy S. Is there anything you miss from the Milestone?

ShaggyDragon said:
Absolutely no problems with GSM or GPS positioning now that I'm using I9000XWJG5. Locks on satellites within 22 seconds from switch on. Thats at 30m precision. After 10 seconds more gets to 5m precision.
This is from inside my building. (Using GPS Status to check)
Click to expand...
Click to collapse
The same here. The problems start when I go out and start to drive around in my car. My GPS is absolutely useless when you move around outdoors, but locks in a few seconds indoors.

widjaja74_us said:
Lets see if I understand this correctly....
Click to expand...
Click to collapse
Let me see if I understand this correctly. You have sold your SGS and you are still coming back here to crap on about the GPS and other small things which are only occurring on some people's phones and not others?
For the record, everything on my phone has been running silky smooth since day one. Lag only occurs with too many apps open and this is to be expected from an operating system that can multitask.

navmanyeah said:
Let me see if I understand this correctly. You have sold your SGS and you are still coming back here to crap on about the GPS and other small things which are only occurring on some people's phones and not others?
For the record, everything on my phone has been running silky smooth since day one. Lag only occurs with too many apps open and this is to be expected from an operating system that can multitask.
Click to expand...
Click to collapse
I sold my phone at a profit because currently i cannot afford to have unreliable phone in doing my job... then i searched for something better and can't find any.... so i'm still following the forum to see of all the problems i experience have been fixed .... if thats the case, i might buy another one....
and for the record, i didnt crap about the GPS, i'm just investigating it deeper, becase GPS is important for me...
Thats crap for you

[Q] Will GPS ever be "truly" fixed

Since some think that the GPS hardware (that can't be fixed by software settings) in the Captivate is crap, do you think that Samsung should use hardware from a different GPS provider in their next version of the phone? Does Broadcom have any GPS hardware in other phones that work well? Other than buying a Garmin phone, are there any other phones out there that use "true" GPS, as in one that you would find in a "real" handheld GPS device? I see/hear a lot of people returning their phones strictly because of the GPS not working well.
I'm just wondering if there will ever be a GPS fix for my Captivate, if the hardware is at fault. If it is a poor GPS chip in the phone, there's not much we can do about it, unless the GPS manufacturer updates their driver and they produce some type of software fix.

I updated my Captivate with the OTA update that claims to "fix" GPS performance. It has improved from never getting a fix to providing one relatively quickly. However it loses the fix moving, it loses the fix for NO REASON when stationary (sitting on a surface with a clear view of the sky), goes nearly a minute without updating at times and isn't accurate. People that are using it and saying it works great have never used a real GPS before. The Captivate is useful for location based services at best and hopefully with more improvements navigation.
I compared it side by side with a 9 year old Garmin eTrex and the ancient eTrex blew the Samsung out of the water. Initial fix on the Samsung was faster (thanks to AGPS) but while the Garmin hovered between 6-8ft CEP and the Galaxy S was about 32ft CEP. This makes the Garmin about 30x more accurate in my book.
This was both outside and INSIDE in my home. To the naysayers that say GPS shouldn't be working indoors please take a walk. It depends on the construction of your home. The fact that a 9 year old GPS receiver that was never known for its sensitivity beats the pants off off the Galaxy S really speaks to how much of a terrible joke the phone's GPS is.
If I could I would return the phone. This OTA update was AT&T and Samsung's fix for the GPS and I believe they're going to say it's "done". Because they'll claim to have fixed it already I hold out no hope that this issue will be further addressed and am upset I have the phone. GPS is a basic feature for such a well-spec'ed phone - we shouldn't be thankful when features work - we should demand that they do.

I'd say probably that's all Samsung can do for its crapy implementation of BroadCOM 4751 chip. The GPS chip may be the latest and greatest (newer than the one used in iPhone4, BCM4750) but we are the beta testers for BroadCom/Samsung as the chip is very new (released in April 2010) and never field tested in any devices.
I have no doubt that we will see great GPS performance from this chip later on from other phones or GPS devices. Just not from any of the current Samsung Galaxy S phones. There is only so much they can do to compensate in software for the bad hardware implementation. Ultimately they have to change the board design and/or chip designs to address the real issue. I just can't see Samsung willing to recall millions of existing SGS phones back and replace the motherboard on each one of them.

The update was certainly discouraging. The phone really has no ability to track you correctly on GPS when moving and it loses its lock frequently. Wasn't there a leaked vibrant rom that fixes the tracking part of GPS? Having something like that come to the Captivate is really the only hope we have left at this point.
I'm not a GPS expert, but since basically every phone that comes out these days has a working GPS, I really can't understand how Samsung managed to screw this up. I'm sure that GPS is quite complicated, but aren't the methods and alrogithms for calculating position from the data pretty well established at this point? I don't know why its this difficult for them to get this right. They souldn't have to reinvent the wheel with this; just implement an existing algorith. I wish I knew what is so challenging for them, it seems way to easy for this much time to go by without addressing this properly.

This needs to go in Q&A or General.

TheSopranos16 said:
They souldn't have to reinvent the wheel with this; just implement an existing algorith.
Click to expand...
Click to collapse
It is not the algorithm, it is the chip. For what ever reason, Samsung decided to use the latest and greatest, but untested, GPS chip that was officially anounced only the spring of 2010. Basically, we are beta testers for BroadCom for its BCM4751 version 1.0 sillicon. Of course, adding a slighly bigger or better GPS atenna inside the phone probably will help too but Samsung has to cut corners somewhere (they always do)

I'm also disappointed with the GPS in this phone. I have a standalone Garmin that I bought this summer, but its nice to know that I can use the phone if I don't have my Garmin with me...but I can't rely on this thing.
I had the Nexus One before this and its GPS was great. I used it on a 300+ mile trip between St. Louis and Chicago and it never lost its fix.
I like the Captivate better for its screen, true multitouch and better graphics processor (although I don't really notice a difference there).
I like the Nexus One better for more ROMs (Cyanogen), stock Android, WORKING GPS, first for updates.
IF (and that's a big IF), they can get GPS to be reliable while driving, then I will prefer this phone.

It is very frustrating. I purchased 2 Captivates, one for my wife and one for myself. Both phones are factory still. The wifes gps works excellently, fix within 5 seconds (indoors too).....whereas my gps couldn't find me if I was the only crumb on the plate.
I returned the first phone. The second phone handed to me worked just as my wifes did. Excellent gps fixes. This phone unfortunately had the turn off problem. If the phone was in my pocket for any period off time it would turn off.
I returned this one for a third phone. The third phone stays on but still has the gps problem.
Is it the device, the hardware or the software, you be the judge!
Sent from my SAMSUNG-SGH-I897 using XDA App

drez22 said:
It is very frustrating. I purchased 2 Captivates, one for my wife and one for myself. Both phones are factory still. The wifes gps works excellently, fix within 5 seconds (indoors too).....whereas my gps couldn't find me if I was the only crumb on the plate.
I returned the first phone. The second phone handed to me worked just as my wifes did. Excellent gps fixes. This phone unfortunately had the turn off problem. If the phone was in my pocket for any period off time it would turn off.
I returned this one for a third phone. The third phone stays on but still has the gps problem.
Is it the device, the hardware or the software, you be the judge!
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Its still hard to say. Signs are starting to point towards hardware, but it could also just be poor drivers, which will eventually get fixed hopefully.

I've said this in another post.. but these phones are being produced on an assembly line - errors get made - the phones are all using the same hardware.
this is my #5 captivate - the last 2 phones were battery issues, but att replaced the entire phone.. I tested gps before I left the store with the new phone -
everyone needs to understand that there will ALWAYS be problems - It's technology. If your GPS didn't work within the first 29 days, take it back!
There is a reason Samsung is creating a "fix" for the GPS - they aren't RECALLING the phone because of a hardware problem. I will eat my words if the phone gets recalled because of a bad "GPS chip." But for now, if you are within 30 days and you aren't happy, please go return it, test the new phone in the store before you leave!

There is still SOME home for this chipset. Nokia is developing a device with the same chipset. I made a thread in i9000 - Android Development forum with the linux driver source code written by Nokia. We'll have to see. If Nokia releases a device with this chip and the GPS works, we know it's Samsung's fault.

Has anyone ever tried to get a comment from Broadcom about the GPS issues? Since its their chip and there are over a million Galaxy S phones out there, I would think it would be appropriate for them to weigh in on this...

born_fisherman said:
I've said this in another post.. but these phones are being produced on an assembly line - errors get made - the phones are all using the same hardware.
this is my #5 captivate - the last 2 phones were battery issues, but att replaced the entire phone.. I tested gps before I left the store with the new phone -
everyone needs to understand that there will ALWAYS be problems - It's technology. If your GPS didn't work within the first 29 days, take it back!
There is a reason Samsung is creating a "fix" for the GPS - they aren't RECALLING the phone because of a hardware problem. I will eat my words if the phone gets recalled because of a bad "GPS chip." But for now, if you are within 30 days and you aren't happy, please go return it, test the new phone in the store before you leave!
Click to expand...
Click to collapse
You have to realize that the percentage of the bad SGS with GPS issues are too high to be caused by any reasonable manufacturaing defects.
You can't test GPS properly in a store without going through a driving test. Period. The problem with the GPS is not about whether or not you get a lock, it is whether or not the phone can keep an accurate lock on you while driving. Unfortunately, most ppl didn't realize this at all.
Samsung will not recall the phone even if it turns of the GPS chip or motherboard is the problem. It is not some kind of safety issue.

TheSopranos16 said:
Has anyone ever tried to get a comment from Broadcom about the GPS issues? Since its their chip and there are over a million Galaxy S phones out there, I would think it would be appropriate for them to weigh in on this...
Click to expand...
Click to collapse
Broadcom made some small fixes in the driver. That's why with JH7, you can see your phone can lock on to more than 8 satellites now. Old drivers will only allow max lock of 8 satellites and minimal SNR value of 20. New driver allow lock on to more than 8 satellites and minimal SNR value of 10 or so. But unfortunately, it didn't improve moving accuracy.

So when you go to the AT&T store take the phone outside and the phone you are going to walk away with doesn't see any satellites, you should just take it and run?
I'm saying this with experience. I've had 2 phones that didn't pickup any satellites even after waiting 5 minutes.
My current phone immediately saw satellites and got a lock within 45 seconds.
Regardless if you are moving or not, the phone should be able to see satellites - I understand the problem is when you are mobile and keeping the lock, this is not my argument.
my argument is that people are still complaining that they can't get a lock even after the OTA update - Test your phone before taking it home. That's all. Not a big deal if you ask me! If your new LCD TV with HD tuner isn't picking up HD channels, you would bring it back right??

My gps was pretty terrible until I flashed Cognition the first version. Now my gps works amazingly and never has the blue circle of ambiguity. Very happy with the gps performance now. So much that I haven't flashed the cognition that is updated with JH7. Worried it could brea kit haha. might as well try though.

Yeah, the new one (Cognition v2.1) with OTA JH7 in it is pretty bad based on my reading. JH7 is an old firmware. Original Cognition has some files from T-Mo Vibrant JI2 firmware which is newer than JH7.
Our only hope is that the final version of Froyo has some improvement baked into.

Best rom/kernel for the most accurate GPS?

My wife and I are big into Geocaching now. Can anyone tell me what rom/kernel has been the most accurate them? It doesn't matter to me what version of android I use. I am finding that NFX 2.1 gets me to the relative position but acts a little crazy at times. As far as CM6, I am finding it to be even less accurate. I'd like to avoid buying a handheld gps if I can.
I have also tried downloading the GPS Status & Toolbox from the market and reset and downloaded GPS assist data. While this works sometimes, I find that it often freezes the GPS temporarily.
Any thoughts guys? Thanks in advance.
P.S. I have already searched the forum for answers and have not found anything specific to what I am looking for.

Any stable rom/kernel combination will be as accurate as any other, in any given situation. The algorithm used to determine GPS positioning is imbedded in the radio software, and is independent of the rom or kernel.
I've been using Google MyTracks for a long time, on many different roms, to record my mountain bike rides deep in the woods. I've not seen any accuracy differences between any of the roms/kernels I've used. I've observed that accuracy is highly dependent on the quality of signal I'm getting from the satellites ... deep in the woods, my position might be off 20 feet or more, but out in the open prairie I'll be accurate to 3 feet or less.

bernard_photography said:
My wife and I are big into Geocaching now. Can anyone tell me what rom/kernel has been the most accurate them? It doesn't matter to me what version of android I use. I am finding that NFX 2.1 gets me to the relative position but acts a little crazy at times. As far as CM6, I am finding it to be even less accurate. I'd like to avoid buying a handheld gps if I can.
I have also tried downloading the GPS Status & Toolbox from the market and reset and downloaded GPS assist data. While this works sometimes, I find that it often freezes the GPS temporarily.
Any thoughts guys? Thanks in advance.
P.S. I have already searched the forum for answers and have not found anything specific to what I am looking for.
Click to expand...
Click to collapse
The accuracy of the GPS is actually very dependent on hardware. Where you get assistance in accuracy is using the cell tower positions to help your location results in combination with the GPS receiver itself. That has a lot more to do with a radio than a kernel. I would try to make sure your using the most recent radio, if it doesnt work better, then flash an older one. There are several geocaching apps on the market that help you with your GPS coordinates. There is no perfect science to geocaching, and your phone GPS will never be as accurate as a dedicated mobile GPS unit. That being said, I use my phone for it, and the extra time it takes to find the cache is part of the enjoyment of doing it in the first place!! Good luck!

D-415 GPS issues

Hello. I just got the D 415 from t-mobile. GPS is working, but not quite as well as it should be. Seems to lock on location and then go away or general flakiness. I have not rooted the phone yet. Are there any tips for settings that could be applied to the phone without rooting?
Sent from my LG-D415 using XDA Free mobile app

Spartan_Don said:
Hello. I just got the D 415 from t-mobile. GPS is working, but not quite as well as it should be. Seems to lock on location and then go away or general flakiness. I have not rooted the phone yet. Are there any tips for settings that could be applied to the phone without rooting?
Sent from my LG-D415 using XDA Free mobile app
Click to expand...
Click to collapse
None that I'm aware of.
Most tweaks are just changing settings in the appropriate file within the devices file system. But root access is needed in order to do so.
I should mention that the GPS is a little flaky on my D415 as well. Might be the norm, dunno...

shinobisoft said:
None that I'm aware of.
Most tweaks are just changing settings in the appropriate file within the devices file system. But root access is needed in order to do so.
I should mention that the GPS is a little flaky on my D415 as well. Might be the norm, dunno...
Click to expand...
Click to collapse
After owning this phone for three months, I'm worried it might be the antenna, since when I'm in the car, the signal will drop out, and pressing the back side of the phone against my sunroof always make it get its lock back. Might just be one of those issues where the antenna needs line-of-sight to the sky to work :/
In any case, Might be using my old windows phone as my primary nav. device unless there's a confirmed fix.

I have a D405. I used to have a samsung galaxy s3 mini -which was arguably a cheaper device- and had next to no issues recording my cycling rides on strava. On my D405, it won't even pick a GPS signal to begin with. Google maps GPS fix isn't as accurate as the sgs3 mini either, and sometimes well over a 100 meters or more discrepancy. There's another D405 owned by a family member and it's not faring much (if any) better... Thus, I don't think any kind of navigation can be possible with this device, which is a huge let down. Which is a shame because i was enjoying my experience very much with this device until i encountered the crappy GPS...

I have no problems with gps or strava , works very good. No difference with my Garmin.
Sent from my LG-D405n using XDA Free mobile app

Gps
Here also no issues, gps is much faster than on previous phone samsung galaxy y.
Greets Peter
LG L90 d405n

I think LG used substandard GPS hardware. I have people reporting GPS works great but my own experience, even on stock, it seems flaky to me. GPS wont lock for me if I'm inside but it will outside.
Sent from my LG-D415 using Tapatalk

In some models cars the gps connection is difficult, also some buildings, this has to do with the cage of faraday that shields from a good connection.

So i took my mum's d405 to my cycle ride yesterday and strava picked up a signal and recorded my entire ride just fine. Also, on GPS status & toolbox it will pick up 10 or more satellites out in the open. But my own d405 won't pick up a single satellite. I'm now thinking my d405 has a defective GPS antenna/hardware since both phones are on the same settings. I'll be taking it back to the shop soon.

Yes
I am having tons of GPS issues with my LG D415. It has been driving me crazy (location: Seattle). What's happened:
-Midway through a route, Maps will say "Lost GPS connection"
-Other times it will simply stop tracking the route and lose the position (assuming I am where I was 5 minutes ago); later it will lock into the GPS and begin giving directions again.
I've tried updating Maps. T-Mobile replaced the phone, assuming it was that particular phone that was the problem. But with the new LG D415, I have the same problems. Using GPS Status and GPS Test apps, It seems the phone has a hard time fixing on satellites. Not sure what to do at this point. May try and see if TMobile will take their phone back and try another network.

I worked on the initial deployment of GPS technology to DoD aircraft over 20 years ago and can tell you that the signal is weaker than you can imagine. It is below the noise level so it's not surprising when you can't lock it inside a building. The fact that different phones have different results speaks to the different antennae of the phones. Again, not surprising. Yes, having a clear view of the full sky is the best way to get optimum accuracy/results. What I've seen is that there's an error of about six feet when I use Google maps and my GPS. It could be anything from less than the best hardware resolving the signal to a position to a different earth model inside the phone's GPS hardware to Google maps being less than accurate. I figure that if I can get a position to six feet; I can avoid falling off a cliff by finishing the job with my eyes.
Jim

anything new on your issue?
Spartan_Don said:
Hello. I just got the D 415 from t-mobile. GPS is working, but not quite as well as it should be. Seems to lock on location and then go away or general flakiness. I have not rooted the phone yet. Are there any tips for settings that could be applied to the phone without rooting?
Sent from my LG-D415 using XDA Free mobile app
Click to expand...
Click to collapse
I just purchased 2 phones before I saw this.. I got them through ebay, brand new but with only 14 return. I'm trying to get LG to provide support for mine, have you done anything with yours?

I use GPS constantly, this phone has a weak antenna for GPS.

My phone was picking GPS signals very weakly and could not get a fix to any satellites. I explained my problems in the previous page in detail. The distributor where i live resisted swapping the phone with a new one, and i accepted a main board swap instead, performed under guarantee. They put another (hopefully a new) main board in the phone. But the problem still persists, which is baffling to say the least. Isn't the GPS antenna of this device on the main board ? Even worse still, the device now seems to restart itself randomly. In the ~2 hours i've spent with it after it's been returned to me, it restarted itself 3 times...
If I didn't have one more of the exact same device (which has no problems whatsoever) i would've said i was doing something wrong...

The same night i posted the above message, the phone went full kaput (never go full kaput ). They swapped the mainboard again but the device went bust before even leaving the shop. So there was no option other than to offer a new device. I'm now waiting for my new phone to arrive. Don't buy a phone from a 3rd world country. If this was in the USA or the UK, i know my device would've been swapped for a new one the first time, no questions asked. Choose something you won't have qualms about tossing in the trash if you have to buy.

My girlfriend just bought this phone from T-Mobile and immediately began complaining about GPS quality issues. It looks like there is no fix for this. Should she attempt to return it for a different phone? She has next to no directional skills and relies heavily on GPS.

DanielWEWO said:
My girlfriend just bought this phone from T-Mobile and immediately began complaining about GPS quality issues. It looks like there is no fix for this. Should she attempt to return it for a different phone? She has next to no directional skills and relies heavily on GPS.
Click to expand...
Click to collapse
GPS is flaky at best, even on stock. We all have different results for several builtin devices. Namely the camera as well as GPS. Other than that it's a pretty good device.
Sent from my LG-D415 using Tapatalk

DanielWEWO said:
My girlfriend just bought this phone from T-Mobile and immediately began complaining about GPS quality issues. It looks like there is no fix for this. Should she attempt to return it for a different phone? She has next to no directional skills and relies heavily on GPS.
Click to expand...
Click to collapse
Sorry this is a month too late. Have her install GPS Status & Toolbox app and test the device in open terrain. It should easily pick 10+ signals within 20-30 seconds. If it's not, have her take it back for a swap.

GPS problem
I believe the GPS problem is a software issue, when I got the phone it used to get the signal very fast, 6 seconds or so, but now even with Gps fix app, it takes an eternity an then looses very easily, but gps fix even shows 20 or more sats but takes ages to lock the signal.

shinobisoft said:
None that I'm aware of.
Most tweaks are just changing settings in the appropriate file within the devices file system. But root access is needed in order to do so.
I should mention that the GPS is a little flaky on my D415 as well. Might be the norm, dunno...
Click to expand...
Click to collapse
If I am rooted, what are some tweaks for the GPS? The GPS on my d415 is definitely flakey.

Huawei P9 Plus GPS Quality

Hello everybody,
i would like to get some estimations regarding the quality of the GPS.
Please on the hardware- and the software end.
Last years i used a samsung I9300 and the GPS was fine.
Then i switched to an Elephone P9000. I think from the hardware end GPS was fine, but
it didn't work very well, maybe due to bad software? And it seems to be a common mediatek problem?
I didn't find anything in the internet, what do you think, does the GPS in p9 plus work well?
THX a lot,
Henning

As per my experience my P9 Plus has one of the best GPS I've ever experienced and it even works in the airplane pretty much accurately when comparing to airplane instruments. I'm based in SE Asia and have reception of American, Russian and few Chinese satellites and fix is pretty fast. No complaints here whatsoever.

Yes. GPS is great...
Hi,
in the meantime i also bought this phone.
I can confirm now that the GPS is very good.
It is even possible to see the two tracks on the road next by next if you drive
to a destination and come back the same way.
Also, had never this accurate GPS before...
lg
Henning

Model number?
Great to hear that you all have a good gps signal. I just bought the p9 plus too. But strangely the gps signal seems like "not so good" , in my opinion. The story has to begin with my previous Huawei's phone.
I had previously owned the mate 7, which it was came with KitKat version and the GPS worked flawlessly. I updated it to lollipop then and the GPS still work perfectly, once turn on the gps, it takes only seconds (yes, it's really seconds, less than 5 seconds to be more appropriate...) to locate where I am. Those day I enjoyed using the gps as it was super fast and accurate. But things changed after I updated it to marshmallow recently. It became very unstable, very inaccurate. So I install the app "GPS test" and found that the accuracy is upto 150 feets which is very inaccurate (I can assure that the accuracy on KitKat and lollipop were only few feets or the most 10 plus feets, It was really super fast and accurate previously....). I know that weather, such as cloudy situation will affect the accuracy, numbers of satellites working etc so I tried to find out if that's the case but nope, I compared it with my cheap Elephone gps and under the same time same condition, I open the app and tested the gps, Elephone gave me the accuracy of 12 feets !
Sometimes when I try to use maps, it even can't detect where I am and if it does, it shows a wrong location. So I thought it is the problem of marshmallow as I searched on other forum and discovered that people also facing gps issue on Nexus phone with marshmallow version. I tried fixing it with another app "gps status & toolbox" , and also found out that "use wifi to improve accuracy" had to be turned on but the accuracy still only about 50 plus feets.
Then I bought the p9 plus, and hope that everything shall be very good just like the mate 7 KitKat and lollipop version, but it is not! The accuracy is also 50 plus feets after doing all the improvement work as above. So dear fellows I would like to ask what is your version of marshmallow and what is the accuracy of your p9 plus? Mine is VIE-L29C20B100. I am thinking if my version is not updated to the latest? And if there is a latest version , does the gps work good?

Hey guys!
I´m not really pleased with the performance of the GPS on my P9 plus ... but the app itself could be to blame. I was traveling on the highway and the navigation got confused and thought i´m traveling on the road parallel to the highway (surely minimum 100m distance between them). I´m using OSMand+ for navigation and it worked fine with other phones so far. Which app are you using?

I use Google maps, it works great imho, I came from a Galaxy S5

Try to create a new user profile on the phone. Switch to the new user and check if the GPS still behaves as you mentioned.

Hi all,
just to give some updates on my findings. Recently I went through a youtube video comparing mate 9 and p 9 plus (https://www.youtube.com/watch?v=_0impUegGO0&t=2s), at time 10:32 it showed exactly the GPS app that I use to test the GPS signal and it also showed exactly the same results as my p9 plus. This being said, I believe there is no way we can further improve the GPS accuracy and I suspect it is due to mashmallow problem (as I had said KitKat and lollipop run very well in accuracy and Nexus user with mashmallow also complain their GPS accuracy is not good), not because phone GPS not good. So maybe we will have to wait till Huawei release firmware update for android Nougat and see if it improves the GPS accuracy.
However, having said that, I didn't really find the GPS signal "not good" in real life. I mean, when u use the GPS app test the GPS it gives "not good" accuracy, but when I open the map for navigation, what I experience so far is EXTRAORDINARY GOOD. I turn on the GPS and immediately switch on the map app, it instantly locate where I am, not even trying to "looking for GPS signal", really really fast, really instantly locate where I am. And it is super accurate. So I think maybe the GPS app is not something that we should use to gauge whether the phone GPS quality good or not, the real life performance will tell more truth. Just like Antutu does not always really reflect the real performance of the phone.
So for those who are having GPS problems when using map, I will suggest u all try to use another map app, maybe the problems really came from the map itself but not phone GPS problem. So for this moment I will stop looking for solution to improve the GPS accuracy (on the GPS app wise), and enjoy using my p9 plus, hope u guys too

Hi, as you say, forget tests, how does it actually work in real life.
Bought my wife one a few days ago and last 2 days testing gps driving around was only seconds to fix and no dropouts in about 1 hour driving. Thats my test.
Great phone by the way, and top quality finish.
If only it had an FM radio...
Sent from my HTC One_M8 dual sim using XDA-Developers mobile app

I find it's slow to lock or find a location, compared to my previous phone (Z Ultra).
If I'm somewhere (even outside, away from buildings, with clear view of the sky) it will take a good few seconds to lock onto my location. Old phone, and even my tablet, are almost instant, taking no more than 1-2 seconds.
This is using Google Maps.
Just a minor niggle, but can be annoying when in the car and needing to find directions quickly.

djyoshii said:
I find it's slow to lock or find a location, compared to my previous phone (Z Ultra).
If I'm somewhere (even outside, away from buildings, with clear view of the sky) it will take a good few seconds to lock onto my location. Old phone, and even my tablet, are almost instant, taking no more than 1-2 seconds.
This is using Google Maps.
Just a minor niggle, but can be annoying when in the car and needing to find directions quickly.
Click to expand...
Click to collapse
Staying outside, especially without any buildings around or an empty land, could be harder for the gps to locate you. I am guessing... This sounds not logic but let me tell what I found again...
Recently I use an app which provide public transport info. This app needs gps in order to locate where are you and provide the info for the public transport at the area you are standing at. Just when I switch on the app and yet to switch on gps, my gf helped me to press the "locate me" button and I was telling her don't do silly things as I haven't turn on gps. But right after that the phone located where I was! I was like ehhh...... how come.... I double check and confirmed that I didn't switch on gps!
So again, recently I am adjusting the phone settings hoping to lengthen the phone battery (even though it's already very good. I can use it for 2 days per charge ). I found something very annoying in one of the setting - location services. Numeral time I have chose the 1st option "use gps, wifi and mobile networks (high accuracy)" and it keeps set it back to the 2nd option " use wifi and mobile networks ". I thought it was a bug of the phone but then later when I relate it to the event happened earlier (the public transport event mentioned above), I was thinking could it because I never turn on gps? then I turned on gps and yes, it automatically switch to the 1st option, and when I switch off gps, it auto switch to 2nd option again.
I then realized that other day when the phone located me without turning on gps, I was close to the MRT station which provide free wifi. And I am not sure do you guys ever experience that sometimes when you switch on the map app without turning on gps, the map itself locate where u r (maybe not very accurate but it's at the bearby area), just that when u try to use the map it will ask u to switch on gps.
That being said, I suspect the phone continuously locate where we are by using the wifi router(if any, at the nearby place) because wifi router is location specific? (not sure, maybe expert know this...) and that's why when u don't switch on gps, it is already "pre-locate" where u r and only if u switch on gps it will immediately give u the accurate position. And that also means if u stay outside without any buildings (and so without wifi too), the phone could not pre-locate u and it will solely rely on gps and that's why take some time to locate where u r?
Anyway this weekend I will be going for a long distance trip and will test the gps to see if the phone give good gps signal

just back from the long journey vacation. The phone gps works flawlessly without dropping off at all. And time to locate also excellent within 2 seconds