Develop Bugs

I have a theory about why GPS on TP2 cannot fix satellites quickly

Or, in my case, cannot get a fix at all in most places.
The only place I can get a fix is an ideal spot near my office, in an elevated garden (on top of a shopping arcade). With nothing taller than me in a 10m area, and nearest buildings only two or three stories high, I can view 16 satellites and immediately get a fix on 8 of them. In all other places, no matter how long I wait, will see 16 satellites with 0 fix.
With more testing I found out to get a good signal strength in normal situations, I have to do either of these:
1. Enable flight-mode (i.e. turn off all other wireless communications).
2. Slide out keyboard.
Doing both will give me a fix within 5 seconds in all out-door or near-window locations. Just enabling flight-mode results in less than 20 seconds. Sliding out keyboard has a lesser effect, but usually will get a fix within 2 minutes.
I used HTC GPS Tool and NaviComputer in the tests.
With HTC GPS Tool:
- Flight-mode OFF and keyboard in, in the ideal spot I get about 50% signal strength for the best satellite.
- Flight-mode ON, signal strength goes up to 80%. Sliding out keyboard has no observable effect with flight-mode ON.
- Flight-mode OFF and keyboard out, I get about 60% for the best satellite.
So it seems the true reason is the GPS antenna in TP2 is poorly located, getting interference from phone antenna and the machine itself.
If you own a TP2, could you test it and tell me the results? (should observe stronger signals even if you don't have a problem)
If most people get same results as me, I'll send a report to HTC. I absolutely love QWERTY keyboard on my TP2, and my next model will definitely have one. I want HTC to learn about this problem (or acknowledge it) so future QWERTY models won't have the same defect.
Thank you in advance for your time to perform the tests.

good test, strange result

Well I never have gps issue with my tp2 so I don't understand your problem

It also depends a lot on which radio you use. Some radio's give you a faster fix and some don't.

drewcam888 said:
Well I never have gps issue with my tp2 so I don't understand your problem
Click to expand...
Click to collapse
As I said in the first post, I observed improved signal strength with either flight mode on or keyboard out.
Even if you have no GPS issues, you may still get better signal strength if you perform the test. You can view signal strength with HTC GPS Tool. That's all I ask of the community - to see if TP2 has a design defect that weakens GPS signal reception.
Lennyz1988 said:
It also depends a lot on which radio you use. Some radio's give you a faster fix and some don't.
Click to expand...
Click to collapse
I'm using this Radio from HTC - version is 3.46.25.30. The HTC Diamond 2 I mentioned in the first post has an even older radio version, yet receives signals better than my TP2 does, until I enable flight mode or have keyboard out.

im using the latest radio and i get a fix in a few seconds. it took ages on other radios. its very deja vu with the touch pro. the gps sucks up until a certain version of the radio.

I logged the NMEA data with HTC GPS Tool, and without flight mode and keyboard out, most NMEA sentences contain blank fields. GPGSV reports 16 satellites, but GPGSA will report status 1 (no fix available). Also GPRMC failed to return time.
If I slide keyboard open, I could see more data fields - GPRMC returning time for instance. I'm pretty sure sliding out keyboard or enabling flight mode have no effect on how the radio driver interprets GPS signal received.
The Jack of Clubs said:
im using the latest radio and i get a fix in a few seconds. it took ages on other radios. its very deja vu with the touch pro. the gps sucks up until a certain version of the radio.
Click to expand...
Click to collapse
Could you tell me your version, is it official? Where did you get it (I assume here in XDA? I've seen plenty of custom radio ROMs)?

Evilnut said:
I logged the NMEA data with HTC GPS Tool, and without flight mode and keyboard out, most NMEA sentences contain blank fields. GPGSV reports 16 satellites, but GPGSA will report status 1 (no fix available). Also GPRMC failed to return time.
If I slide keyboard open, I could see more data fields - GPRMC returning time for instance. I'm pretty sure sliding out keyboard or enabling flight mode have no effect on how the radio driver interprets GPS signal received.
Could you tell me your version, is it official? Where did you get it (I assume here in XDA? I've seen plenty of custom radio ROMs)?
Click to expand...
Click to collapse
You can get the official radio's here. (There are no custom radio's) http://forum.xda-developers.com/showthread.php?t=549939
Just try some radio's for yourself. There is no best radio, because it depends on which place you are etc. So what works best for me is not necessarily the best for you
ps you need to have hardspl installed.

you will not be able to connect to all those sats no matter what equipment you have. in total "There are 30 GPS satellites" so I AM GUESSING here. that there are around 15 on each side of the earth. and if you divide it for the top of the earth and the bottom that leaves 7.5 sats so if its showing 16 there must be one extra uneven one in range. so that makes 8 connectible to. im pretty sure that you cant connect to a sat thats on the other side of the earth. or on the bottom.
but thats just my research and my thoughts. i could be wrong. but i dont think i am.
so in theory you should only be able to connect at 8 sats in any one time. OR it could just be that out of the number of sats your connected to. if any other were added it would give you a wrong position

to lock on satellite with the htc gps tool takes about 1 minute with data communications on . in airplane mode it takes about 5 seconds. this is consistent for me.
htc tp2
tmobile
wm 6.1

I've tested several Gps apps both on Winmo and Xdandroid.
Something is sure: apps make the performances
On Android, Google Navigation is 5 time slower than Navigon (same place same conditions of course)
On Winmo Waze is 10 time slower than Tomtom and lost the grid even with good conditions.

In the UK GPS works fine from my car, inside not so good. It's better in open not urban areas.

littlebigtux said:
I've tested several Gps apps both on Winmo and Xdandroid.
Something is sure: apps make the performances
On Android, Google Navigation is 5 time slower than Navigon (same place same conditions of course)
On Winmo Waze is 10 time slower than Tomtom and lost the grid even with good conditions.
Click to expand...
Click to collapse
I will at times have both my TP2, 6.5, iGo8 right next to my Asus R600 (standalone GPS) and the Asus will fix a satellite within a few seconds, while the TP2 usually takes a good 2 or 3 minutes.
I always attributed this to the type of receiver and antenna, but that's just speculation on my part.

FoneWatcher said:
I will at times have both my TP2, 6.5, iGo8 right next to my Asus R600 (standalone GPS) and the Asus will fix a satellite within a few seconds, while the TP2 usually takes a good 2 or 3 minutes.
I always attributed this to the type of receiver and antenna, but that's just speculation on my part.
Click to expand...
Click to collapse
With QuickGPS data, my TP2 gets a lock within seconds, even indoors.
You MUST keep this data up-to-date, lest lock times suffer.
Also, thread necro... closed.

[Q] GPS problems. Can't get a fix!

Hi all,
I have the Desire HD for 2 weeks now but I've only yesterday noted the gps doesn't seem to work... It's a complete stock model, no custom roms or radio's. I'ts just never able to get a fix! Are there other people with problems like this? Could my device be broken?
I have installed a app from the market that tests the gps and it finds no satelites most of the time except one time I checked it found 4 with a very bad signal... Even then in Google Maps or the HTC Locations it didn't get a fix.
Any ideas?

Bump! I have exactly the same problem. Any Advice?

same problem

i HAD this problem, but then i left the GPS on for an entire journey. 45 minutes later it had a fix and ive never had any problems getting a fix within a minute since.
i dont think the phone knows what side of the globe its on the first time, so maybe it just needs a loooong time the first time.

Most GPS devices need to download a file known as an almanac. This determines where satellites will be at specified times.
This file can take a while to download as GPS is purely passive. I'm not sure if the DHD is A-GPS (Assisted). This will download the almanac via mobile or wifi data.
This is why sometimes the first GPS lock can take a while.

Try these two programs:
http://www.appbrain.com/app/gps-status-toolbox/com.eclipsim.gpsstatus2
http://www.appbrain.com/app/gps-test/com.chartcross.gpstest
First one is great for diagnostic so it should tell you what is wrong.

I also have the same problem, been driving for about 30mins and nothing..
Sent from my Desire HD using Tapatalk

andyharney said:
Most GPS devices need to download a file known as an almanac. This determines where satellites will be at specified times.
This file can take a while to download as GPS is purely passive. I'm not sure if the DHD is A-GPS (Assisted). This will download the almanac via mobile or wifi data.
This is why sometimes the first GPS lock can take a while.
Click to expand...
Click to collapse
Ok......DHD has A-gps as well
seeing your posts, quite amazed how you did not know this (no pun intended)

dzn said:
Hi all,
I have the Desire HD for 2 weeks now but I've only yesterday noted the gps doesn't seem to work... It's a complete stock model, no custom roms or radio's. I'ts just never able to get a fix! Are there other people with problems like this? Could my device be broken?
I have installed a app from the market that tests the gps and it finds no satelites most of the time except one time I checked it found 4 with a very bad signal... Even then in Google Maps or the HTC Locations it didn't get a fix.
Any ideas?
Click to expand...
Click to collapse
1st gps-fix is a pain, after it will all get better....search for my posts, you'll see that this has been asked several times (don't want to be a b**ch but, please use the search button as well) and in general, 1st fix takes some time, 2nd is fast (like <2 min).
At this moment, while I thought my gps fix was very bad (and as I own one, if not the, of the 1st DHD batches, it was not abnormal to think that it also had gps probs) it now fixes within 1 minute....

Problematic piece of device for me for GPS.

Got mine a cpl of days ago , downloaded the apps above but still nothing i will give it one more try.
Sent from my Desire HD using Tapatalk

kermez said:
Try these two programs:
http://www.appbrain.com/app/gps-status-toolbox/com.eclipsim.gpsstatus2
http://www.appbrain.com/app/gps-test/com.chartcross.gpstest
First one is great for diagnostic so it should tell you what is wrong.
Click to expand...
Click to collapse
I tried both GPS apps. And immediately after that, I was able to get GPS satellite lock on within 20s.

Guys regarding the GPS, all of us we face an issue. It can not lock the satellites quickly. Especially for the people like me who are HTC HD2 owners as well. I was waiting only few seconds. (cooked rom). We MUST forget that now. It's an issue for all of the android devices. Even with the device of the Nexus. So we must live with that. Sometimes it will lock the satellites in 1 min or 30 secs, some other time in 2-3 mins. I searched also in the internet and i found so many complains regarding the GPS and hopefully not only from DHD users

f9cator said:
I tried both GPS apps. And immediately after that, I was able to get GPS satellite lock on within 20s.
Click to expand...
Click to collapse
Yep, I had also that problem but then red at forums that only way to lock as fast as you can satellite is to use first one for locking over internet and after that it's much easier to find satellite. Whenever you have problem with locking or need gps asap first program should provide you with fast satellite find.
Btw gps on dhd is so good that I have sold my old garmin - simply it's obsolete and now I have only to purchase official car holder.

Most of the times is more difficult to get a fix in a speeding car.
In the opposite case is generally faster to get a sat fix.

So I've been using my DHD for 3 weeks now (stock model as well, no root) and here are two issues with GPS that I noticed and have no idea what to do with it.
1. The same problem as described in first post. Every once in a while my GPS just cannot get a fix. I installed GPS Test app. Normally it finds around 6-7 satellites, they are all in use, the yellow indicator in GPS status bar goes green and my location appears on mini-map.
However there are situations when GPS Test says that there is 1 to 5 satelites in view, later on they also apper to be in use, but GPS status doesn't change to green and my actual location doesn't show. It's not a problem of visibility or my location - the GPS can get a fix today and not work tomorrow at the very same place.
I have no idea if this can be fixed, so any help appreciated.
2. This is not really an issue, just something that I find quite disturbing. I'm using this traffic app (Yandex Maps for those of you in Russia). It shows current traffic condition on the map + your current location if you have GPS. So each time I lock my DHD (press the button on the top) the GPS is immedietly switched off. So when I unlock the screen to see the map again it takes from few seconds to a minute or even more to update my current position. Sometimes it doesn't happen at all (see problem #1). I understand it's probably done to save battery but I would prefer continuously working GPS than saving battery. Is there any way to set GPS to always working mode?
Thanks in advance to everyone who can help. Cheers

Hi,
I read all you guys said and after trying both the apps and refreshing my agps data manually I now get 6-7 satellites which is good I think?
So for all of you with the same problem, just stay outside for a moment and make sure you have a data-connection. Then use the GPS Status app and refresh your agps data manually. It should work... It did for me!
Ps. I think my Desire, not the HD, used to see 11 satellites? Is that possible? Does this mean 6-7 is kind of weak?

dzn said:
Hi,
I read all you guys said and after trying both the apps and refreshing my agps data manually I now get 6-7 satellites which is good I think?
So for all of you with the same problem, just stay outside for a moment and make sure you have a data-connection. Then use the GPS Status app and refresh your agps data manually. It should work... It did for me!
Ps. I think my Desire, not the HD, used to see 11 satellites? Is that possible? Does this mean 6-7 is kind of weak?
Click to expand...
Click to collapse
Just to make it clear - to manually refresh AGPS using GPS Status - you need to go to Menu->Tools->Manage A-GPS state->Download?
I'm not outside now, but will try it once I have problems getting a fix.
And yes, 11 sats is possible. 6-7 is more than enough though.

Stand still to get a fix? Harder when you are speedy, I think.
Sent from my Desire HD using XDA App

Your movement speed has no impact on how quickly you get a lock. Remember, these satellites are in orbit traveling alot faster than your 30 - 70mph.

GPS/Navigation problem... app, mobile or something else?

Hi, I'm really not sure what to make of this problem so maybe you can help me out pinpointing the problem so I can take care of it. I've observed several things and don't know how to connect the dots, or if there's any connection, so let me list what I've been seeing:
1 - I've got TomTom to use on my car.
2 - Worked wonderfully well on the first week or so. Fast to lock onto satellites (10 to 20 seconds), accurate and stable without loosing the lock.
3 - I've noticed from day one that it tends to to locate me a few meters back than what I'm actually am, so if I come about two streets very near one another, the turn on the correct one is a bit hard to to tell without looking at the map.
4 - A week ago, the phone started to take longer to lock my position and won't keep it, it often loses connection with the satellites.
5 - Also, the problem is a lot worse if I stop. It might be accurate while I'm driving over 50mph but, if I stop, the direction I'm facing is lost and then my location. It will place me within 50m to 100m of where I am, which could mean on another street. It has become useless for the slow paced city driving, with red lights and slow traffic.
6 - I haven't changed ROMs or anything major but I have downloaded a few apps, might have taken a few others out, the usual stuff... I'm using Android Revolution HD 31.2.
7 - I've noticed that a lot of times, in regular mobile use, the GPS icon shows up trying to locate my position, even with GPS off. Might be that I have accepted Google's location request or is embedded on some app. Don't know if this has any relation to the workings of navigation or with the timeframe the problem occurred.
8 - A final though... I've always had this problem with standalone GPS devices... They work fine for a few weeks/couple of months and then they seem to deteriorate, having a hard time to locate my position, maintaining a good connection, etc. I have no idea on why this is or if there's some sort of cache I should be cleaning.
Oh, and this happens regardless of the weather... overcasted, rainy days or clear skies, it's all the same.
So any thoughts on how to pinpoint the source of the problem so I can fix it?
Cheers!
Renato

Anyone?

GPS issues

So I have noticed when I am going on long trips that my GPS keeps bugging out on google maps. At first I thought it was maps being weird but now I'm starting to think its the GPS in the phone itself. I'll be driving down the highway and it will suddenly start pointing the other direction like i just made a turn. After about a tenth to a quarter of a mile it will correct itself. Over the course of a 200 mile trip it did this every few minutes. Sometimes it would think that I had pulled off the offramp when I was still cruising highway speeds. This and the camera issues are making me seriously consider selling this phone and getting something different...

Krazy_Calvin said:
So I have noticed when I am going on long trips that my GPS keeps bugging out on google maps. At first I thought it was maps being weird but now I'm starting to think its the GPS in the phone itself. I'll be driving down the highway and it will suddenly start pointing the other direction like i just made a turn. After about a tenth to a quarter of a mile it will correct itself. Over the course of a 200 mile trip it did this every few minutes. Sometimes it would think that I had pulled off the offramp when I was still cruising highway speeds. This and the camera issues are making me seriously consider selling this phone and getting something different...
Click to expand...
Click to collapse
In Google maps click your location (little blue dot), then in the bottom left hand side click calibrate compass. I was having the exact same issue until I did this.

I have tried doing the calibration and it still wont get better than "low" accuracy. Do you get better than low?

Mines medium right now. I remember when I was having issues it showed low too. I had to get out of my car and do the compass calibration again as for some reason it wouldn't move off of low every time I tried in my car.

Yeah it's terrible. Hoping someone else has some fixes

Same annoying gps issues here as well

Just happened today for the first time. No clouds or building, I was out in the open. Marker flipped 180° 3-4 times while I approached a stoplight... hard to know which way to turn.
Makes me think this might be related to the recent 10.0.6 update?

skelzer said:
Just happened today for the first time. No clouds or building, I was out in the open. Marker flipped 180° 3-4 times while I approached a stoplight... hard to know which way to turn.
Makes me think this might be related to the recent 10.0.6 update?
Click to expand...
Click to collapse
Yes, that is exactly my lips around a hundred and eighty degrees numerous times. Takes forever for it to get oriented and it still sometimes gets off the kilter. I have noticed this since 10. 0.4

skelzer said:
Just happened today for the first time. No clouds or building, I was out in the open. Marker flipped 180° 3-4 times while I approached a stoplight... hard to know which way to turn.
Makes me think this might be related to the recent 10.0.6 update?
Click to expand...
Click to collapse
The first time I noticed this issue was November the 8th when I was driving north for 3 hours. It was obviously happening where it would do that marker flipping around. This last sunday i went on another trip and was still noticing the issue often. It even caused me problems when I was walking around downtown Kansas City trying to find a venue. I had to ask somebody to point me in the right direction because the thing couldn't decide where i needed to go. I have reached out to the oneplus support and i'm waiting for further instructions from them. ... here... ill copy paste the email.
Thank you for contacting OnePlus Customer Support.
We apologize for the inconvenience that this has caused you. As we understand your concern. Please do not worry, we will surely help you with the best possible ways available.
Kindly help us with the below details:
1. Did the issue start post update?
2. Which is the current OS version on the device?
3. Does the issue occur Randomly or Always?
We request you to follow the below troubleshooting steps so that it could fix your issue:
1. Go to Settings- Location- Mode, select High accuracy, switch GPS on.
2. Check the environment, test the GPS in an open and empty place, because GPS used indoors can be blocked.
3. Use different apps to check whether there is the same problem.
4. Disable or Uninstall Security apps as it may limit the authority of the GPS in some apps.
We would also request you to do a network reset on the device so the issue can be resolved:
Network Reset:
Settings>> Backup and Reset>> Network setting Reset>>Reset setting
To assist you will be our pleasure, help us to help you. Request you to reply within the next 5 days as after that the ticket will be auto-closed".
Regards,
Phillip Smith
OnePlus Customer Support
Click to expand...
Click to collapse
Problem with their instructions is i cant seem to find a way to turn the GPS mode to high accuracy as described. anybody know where it might be?

Thank you for connecting back to us.
I understand that you are not able to find the high accuracy settings on OnePlus 7T. Please do not worry, I request you to clear the device cache to fix this issue.
Please follow below steps to clear the cache:
Clear Cache -
- Power off your device.
- Press the power key + volume down for a few seconds.
- Select English.
- Tap on Wipe data and cache.
- Tap on Wipe Data and cache again.
- Tap on Yes to confirm data and cache wipe.
- Wait for the wipe process to complete.
- Reboot phone.
If you had any further questions please reply to us within the 5 days as after that the ticket will be auto-closed.
Click to expand...
Click to collapse
Will this just completely wipe my phone if i follow the instructions? I seriously don't want to do that especially if it might not even fix anything.

Krazy_Calvin said:
Will this just completely wipe my phone if i follow the instructions? I seriously don't want to do that especially if it might not even fix anything.
Click to expand...
Click to collapse
No, it will not wipe the phone unless you select that option to wipe data or factory reset.

Well i will tell it to just wipe the cache... i am pretty positive whoever was handling the support just gave me instructions to wipe the whole phone though. lol. im not doing that.
Edit:
Wow... so frustrating... When I tried to do those functions the thing asked for a password. It wasn't my pin or my normal password i use. I have no idea what it was asking for but it gave a forgot password option to reset the phone. I reset the phone.
Also... its that easy to reset this phone?

Ok... Well after resetting my phone completely booted up, installed the latest patches and now when I check the accuracy in the maps it checks out high. Hopefully it stays that way.

Krazy_Calvin said:
Ok... Well after resetting my phone completely booted up, installed the latest patches and now when I check the accuracy in the maps it checks out high. Hopefully it stays that way.
Click to expand...
Click to collapse
Did you lose root?
---------- Post added at 03:05 AM ---------- Previous post was at 03:04 AM ----------
Krazy_Calvin said:
Well i will tell it to just wipe the cache... i am pretty positive whoever was handling the support just gave me instructions to wipe the whole phone though. lol. im not doing that.
Edit:
Wow... so frustrating... When I tried to do those functions the thing asked for a password. It wasn't my pin or my normal password i use. I have no idea what it was asking for but it gave a forgot password option to reset the phone. I reset the phone.
Also... its that easy to reset this phone?
Click to expand...
Click to collapse
So, did you end up losing all your data?

I was never root in the first place. All my data is in the google cloud. I just had to go through the annoyance of setting up all my settings and icons since they didn't stick.

Well I know it's not 7T, but I had horrible GPS on the 6T and 7 Pro models both. Neither had ok accuracy, no matter what I did. It would lose GPS signal on street, in car, on foot. OnePlus is just super horrible at GPS, and I have no clue why. Like why it is not acknowledged and why they won't fix it.
My recommendation is to try a reboot and/or use Google Maps when this happens. I am a fan of Waze, I prefer it much over Maps (speed limits). But in Waze and any other 3rd party GPS app - it struggles to find me way more than Maps. That said, your GPS won't magically fix itself in Maps. It will be just a tiny teeny bit better. So like.. from super horrible bad it will go to christ this is a horrible gps. It may still help in a pinch.

GPS issue
h8Aramex said:
Well I know it's not 7T, but I had horrible GPS on the 6T and 7 Pro models both. Neither had ok accuracy, no matter what I did. It would lose GPS signal on street, in car, on foot. OnePlus is just super horrible at GPS, and I have no clue why. Like why it is not acknowledged and why they won't fix it.
My recommendation is to try a reboot and/or use Google Maps when this happens. I am a fan of Waze, I prefer it much over Maps (speed limits). But in Waze and any other 3rd party GPS app - it struggles to find me way more than Maps. That said, your GPS won't magically fix itself in Maps. It will be just a tiny teeny bit better. So like.. from super horrible bad it will go to christ this is a horrible gps. It may still help in a pinch.
Click to expand...
Click to collapse
..in setting, turn off :Google location accuracy - improve location accuracy , and wi-fi and bluetooth scanning. It works for me
(source: https://forums.oneplus.com/threads/gps-issue.1113746/page-2)

georgito said:
..in setting, turn off :Google location accuracy - improve location accuracy , and wi-fi and bluetooth scanning. It works for me
(source: https://forums.oneplus.com/threads/gps-issue.1113746/page-2)
Click to expand...
Click to collapse
Interesting, thank you, I will try that.
I mean in my testing, I actually put different phones next to each other and tested GPS Signal strength.
The 7 Pro basically has a much worse signal than any other phone I tested. It's dark orange/red. Every other phone is at least yellow.
Just install "GPS Status" from Play Store, put your phone besides whatever other phone and prepare to get shocked.
https://forum.xda-developers.com/attachment.php?attachmentid=4938075&stc=1&d=1580304335
https://forum.xda-developers.com/attachment.php?attachmentid=4938077&stc=1&d=1580304335

Hello,
Posting this in case others are still searching for a gps accuracy fix on the Oneplus 7t phone.
I may have found a workaround for the gps accuracy issues on the 7t. Fwiw, I'm using the Verizon version, on a HD1905, with the latest March update 10.0.0.HD65AA. I was experiencing all the same issues, and sadly the March update didn't seem to make any improvement. I've only had the phone for a few days, and was very disappointed w/ the gps performance. Tried everything including wiping the phone clean (I didn't realize the gps was wonky until I spent a couple days migrating everything over), and nothing worked -- it would immediately boot and have wildly wrong gps location, or the lock would seem to phase in an out. If it wasn't for the shelter in place order, I probably would have returned it.
After much trial and error, I found a workaround that seems to work. Even tested on our walk around today with Gaia and it correctly tracked our path.
1) put phone into airplane mode
2) reboot, and leave in airplane mode after reboot
3) run google maps, wait for lock, should be accurate
4) turn off airplane mode
5) test gps -- it should work better
If you reboot while normal networking is enabled, the gps would fail every time -- never accurate. But when networking is completely shutdown when the GPS radio is turned on, it seems to work as expected. Using the 'GPS test' app, my accuracy goes from 100m/ no lock, to approx. 3M 3d-lock, just sitting inside on my desk, and it maintains it. I'd say my old Pixel phone still has slightly better gps accuracy overall, but this is very usable now. And, I don't reboot very often -- phone is always charged, etc, so the workaround is doable for me. If I do need to reboot, just have to remember to use airplane mode first. Otherwise, seems to work as expected now.
Hope that helps someone.

beyondcrazy said:
Hello,
Posting this in case others are still searching for a gps accuracy fix on the Oneplus 7t phone.
I may have found a workaround for the gps accuracy issues on the 7t. Fwiw, I'm using the Verizon version, on a HD1905, with the latest March update 10.0.0.HD65AA. I was experiencing all the same issues, and sadly the March update didn't seem to make any improvement. I've only had the phone for a few days, and was very disappointed w/ the gps performance. Tried everything including wiping the phone clean (I didn't realize the gps was wonky until I spent a couple days migrating everything over), and nothing worked -- it would immediately boot and have wildly wrong gps location, or the lock would seem to phase in an out. If it wasn't for the shelter in place order, I probably would have returned it.
After much trial and error, I found a workaround that seems to work. Even tested on our walk around today with Gaia and it correctly tracked our path.
1) put phone into airplane mode
2) reboot, and leave in airplane mode after reboot
3) run google maps, wait for lock, should be accurate
4) turn off airplane mode
5) test gps -- it should work better
If you reboot while normal networking is enabled, the gps would fail every time -- never accurate. But when networking is completely shutdown when the GPS radio is turned on, it seems to work as expected. Using the 'GPS test' app, my accuracy goes from 100m/ no lock, to approx. 3M 3d-lock, just sitting inside on my desk, and it maintains it. I'd say my old Pixel phone still has slightly better gps accuracy overall, but this is very usable now. And, I don't reboot very often -- phone is always charged, etc, so the workaround is doable for me. If I do need to reboot, just have to remember to use airplane mode first. Otherwise, seems to work as expected now.
Hope that helps someone.
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Click to collapse
thanks for posting this. Wow. That is a lot of headache to run through. I will try that as well. As I absolutely can't stand the GPS on this phone.
I have also found a workaround, although it involves toggling the location settings on and off. IE toggling the Wi-Fi and Bluetooth scanning on and off. Generally this works for me, although sometimes I have to reboot the phone

Problems lately with GPS

Just recently over the last couple months, I have been having a problem with getting a good gps signal in programs such as Waze and Google maps. I have done all kinds of searches and many mention to go into settings and in location settings, turn on High Accuracy. That option is bo longer available and not sure if it was eliminated in Pie. I have been doing all the latest updates and believe I am current. The only thing I have been able to find is to go into settings, then Biometrics, and there I found location. The only choices under Improve Accuracy is to turn on Wifi scanning and Bluetooth scanning which I have done. There no longer is a choice of High Accuracy and the ability to turn GPS on or off like I had in previous phones and previous versions of Android. I have even tried turning on High Performance under Battery Power settings and turned off any choices to optimize battery or disable apps. I ended up downloading 2 different GPS apps from Store, GPS Status and GPS Fix/Optimizer. I will normally use Waze or Google maps through Android Auto. I can tell when there is a problem when the position indicator keeps bouncing all over the place in Waze and cant find exactly where I am. When that happens, I will check on GPS Status and it always shows that it is having a problem acquiring the satellite signals. I will then open up GPS Fix/Optimizer and on the home screen, there is a button that will say Service Off. I press it and it will then read Service On. Switching back to GPS Status will now show that it is starting to acquire multiple satellite signals. When I switch back to Waze, now it is able to show my exact location and begins to work properly.
This is driving me nuts. I never had this problem on any other of multiple different phones or Android versions. I can get GPS working but have to jump through all these hoops each time and it sucks. So what other steps can I do to be able to fire up Waze and have it find me right away?

It's not just an Android Auto thing, it happens with GPS in general. There have been many posts about it over on Reddit in the Note 8 Forum dating back to March. The best fix is to just toggle location whenever you notice that GPS isn't working.
The scary thing is not only has Samsung not even acknowledged there is an issue, newer phones are also starting to have the problem. Just saw people complaining about the same thing in a S20 forum. Just like our issues, they started after an update.

mikeyk101 said:
Just recently over the last couple months, I have been having a problem with getting a good gps signal in programs such as Waze and Google maps. I have done all kinds of searches and many mention to go into settings and in location settings, turn on High Accuracy. That option is bo longer available and not sure if it was eliminated in Pie. I have been doing all the latest updates and believe I am current. The only thing I have been able to find is to go into settings, then Biometrics, and there I found location. The only choices under Improve Accuracy is to turn on Wifi scanning and Bluetooth scanning which I have done. There no longer is a choice of High Accuracy and the ability to turn GPS on or off like I had in previous phones and previous versions of Android. I have even tried turning on High Performance under Battery Power settings and turned off any choices to optimize battery or disable apps. I ended up downloading 2 different GPS apps from Store, GPS Status and GPS Fix/Optimizer. I will normally use Waze or Google maps through Android Auto. I can tell when there is a problem when the position indicator keeps bouncing all over the place in Waze and cant find exactly where I am. When that happens, I will check on GPS Status and it always shows that it is having a problem acquiring the satellite signals. I will then open up GPS Fix/Optimizer and on the home screen, there is a button that will say Service Off. I press it and it will then read Service On. Switching back to GPS Status will now show that it is starting to acquire multiple satellite signals. When I switch back to Waze, now it is able to show my exact location and begins to work properly.
This is driving me nuts. I never had this problem on any other of multiple different phones or Android versions. I can get GPS working but have to jump through all these hoops each time and it sucks. So what other steps can I do to be able to fire up Waze and have it find me right away?
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Did you ever find a fix for this problem ? I am dealing with this too and have been for a while. GPS when using as a phone is no issues at all but, once you connect Android Auto, it's a mess. Very hit or miss and even if I hit where it works, it will drift off and require me to unplug/re-plugin my Note 8..
I posted to a few other places on this issue, nothing has solidly fixed this. Otherwise my note 8 works fine, so I no reason right now to upgrade, till the phone I want drops a little in price.
Reddit post
https://www.reddit.com/r/AndroidAut...ps_on_waze_or_google_maps_gets_randomly_lost/
Android auto site..
https://support.google.com/androidauto/thread/45792804?hl=en
Samsung's site
https://us.community.samsung.com/t5...-GPS-randomly-on-Waze-and-Google/td-p/1332311
And even Ad central.. er...Android Central
https://forums.androidcentral.com/a...-gps-randomly-gets-lost-any-idea.html?mn_qa=1
Anyone else figure this problem out ?

I still havent found a fix. Here is another thread I started on the main Galaxy Note 8 that produced a lot more discussion but sadly, no fix yet.
https://forum.xda-developers.com/galaxy-note-8/help/recent-gps-problems-t4058849
For me at least, it seems like it may be an issue between Android Auto and my Chevrolet. Still not entirely convinced but folks over at Android Auto claim that there is a communication problem with Android Auto trying to communicate with the internal gps on my truck. Supposedly even though I dont have traditional on board navigation, there is still gps communications going on. I believe that with Chevy, it is the onstar system. Android Auto is programmed to utilize vehicle gps because it is supposed to be more accurate. Unfortunately, if that is the case, and there is constant communication error between the Note 8 and vehicle, the result is that the apps in AA like Waze and Google maps continually have location errors. I inquired why AA couldnt just allow users to utilize the phone GPS as an option and was again told that a vehicle gps would be way more accurate so that option isnt available. When unplugging usb from vehicle, it defaults to the phone GPS and begins working again almost immediately. So is the problem with AA programming or communication problems with my Chevy truck? Who knows. Sometimes they communicate just fine from the get go but other times, not so much. I just wish the problem could be fixed. I would be leaning towards AA programming as this does not just happen with Chevy vehicles but AA just passes the buck.

mikeyk101 said:
I still havent found a fix. Here is another thread I started on the main Galaxy Note 8 that produced a lot more discussion but sadly, no fix yet.
https://forum.xda-developers.com/galaxy-note-8/help/recent-gps-problems-t4058849
For me at least, it seems like it may be an issue between Android Auto and my Chevrolet. Still not entirely convinced but folks over at Android Auto claim that there is a communication problem with Android Auto trying to communicate with the internal gps on my truck. Supposedly even though I dont have traditional on board navigation, there is still gps communications going on. I believe that with Chevy, it is the onstar system. Android Auto is programmed to utilize vehicle gps because it is supposed to be more accurate. Unfortunately, if that is the case, and there is constant communication error between the Note 8 and vehicle, the result is that the apps in AA like Waze and Google maps continually have location errors. I inquired why AA couldnt just allow users to utilize the phone GPS as an option and was again told that a vehicle gps would be way more accurate so that option isnt available. When unplugging usb from vehicle, it defaults to the phone GPS and begins working again almost immediately. So is the problem with AA programming or communication problems with my Chevy truck? Who knows. Sometimes they communicate just fine from the get go but other times, not so much. I just wish the problem could be fixed. I would be leaning towards AA programming as this does not just happen with Chevy vehicles but AA just passes the buck.
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Yep, saw that thread as well and the one on Android Auto's site, I even replied to it. Wishing there was a solid fix here but, no... I have a Lexus LS that I added on a 3rd party Android auto device on. I had this same issue when I had a 2019 Ford with Android Auto as a rental. I figured 6 months later (I just put AA in my car about 2 weeks ago) it would be resolved by now.
Not 100% sure it is the GPS car thing you were told, as other phones plug into Android auto and have a seamless experience if this was the case, all phones would have this issue. We are using the same software. So why is the Note 8 different ? Well, I hear this effects other Samsung phones but, none as bad as the Note 8. Newer Android 10 even Samsung phones do not report this issue, as far as I have heard.
Oh, well the quest goes on... If you find something, please drop me a line....and thanks !

"Me too" - Driving me crazy. Toggling Location services off and on sometimes helps, but not always. I'll be moving, and the map doesn't reflect any movement.

Sengfeng said:
"Me too" - Driving me crazy. Toggling Location services off and on sometimes helps, but not always. I'll be moving, and the map doesn't reflect any movement.
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Toggling when driving is not a good idea, Normally unplugging and plugging back in works just as well. Funny for the last week, it was working fine (get lost when in a lot of trees and sometimes not recover but, on the highway it was perfect), till this morning and it was a mess.
There was an update for the Note 8 on Verizon a week ago, I need to double check all the power saving features and make sure they are fully disabled...

I had also started a thread on the Google Android Auto community back in May where the developers monitor posts. Just recently (about a week ago) it seems they are acknowledging that there may be a problem and posted they were going to send out emails to several that were affected by this. They gave directions on how to forward a bug report to them when the problem showed up. I was one that received the bug report email. I have since submitted 2 bug reports to them but have not received any kind of reply. Hopefully I hear back sometime soon and they are able to identify exactly what the problem is. If I do, I will post their response...