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GPS error caused by compass?

Hi! I hope to be usefull.
When I see the arrow in the google maps the position is always the same. Its possible that the compass can be the cause of gps error?? Its possible turn off the compass to try the gps alone??
Best regards and sorry my english.

ive also wondered about this. the arrow in mytracks spins around like crazy while moving. if gps programs use the compass to help tell the direction then thats gonna be a problem.

Does anyone know if we can test this in some way? I would gladly try any solution or help with alpha testing.

gps - compass or ...sensors?
hello I have noticed a strange behavior of the gps too..
I have done many tests with the program "GPS Test" (available free on Android Market) and I noticed that after the fix if the galaxy is moved, especially if changes from portrait to landscape ( or vice versa), the program loses the fix with the satellites (all indices of satellites in use turn gray), it never happens if i disables the landscape mode in the galaxy's settings or in the gps-test 's menu...
Maybe I'm wrong, but I think the GPS is less sensitive for satellites but too sensitive to the position variations of the smartphone (horizontal / vertical during use) .. I do not know if it happens with all programs that use GPS, but I do not think this should happen.
Federico

charlicillo said:
Hi! I hope to be usefull.
When I see the arrow in the google maps the position is always the same. Its possible that the compass can be the cause of gps error?? Its possible turn off the compass to try the gps alone??
Best regards and sorry my english.
Click to expand...
Click to collapse
Like earlier Garmin or Magellan gps, the compass should be used up to the point that the gps shows 5km/h (adjustable in some devices) because the signal of the gps is unstable and is not reliable for direction under that speed. Also...
reziel73 said:
hello I have noticed a strange behavior of the gps too..
I have done many tests with the program "GPS Test" (available free on Android Market) and I noticed that after the fix if the galaxy is moved, especially if changes from portrait to landscape ( or vice versa), the program loses the fix with the satellites (all indices of satellites in use turn gray), it never happens if i disables the landscape mode in the galaxy's settings or in the gps-test 's menu...
Maybe I'm wrong, but I think the GPS is less sensitive for satellites but too sensitive to the position variations of the smartphone (horizontal / vertical during use) .. I do not know if it happens with all programs that use GPS, but I do not think this should happen.
Federico
Click to expand...
Click to collapse
... like in some sirfstarIII gps, the receiver (gps) was adjusted so that it didn't show any movement (and speed) within a circle of 15m or 30m (also adjustable) to avoid showing movement (and direction) while you were stopped.
Another fact in this category of gps devices (single frequency, autonomous etc) is that they are much more accurate about speed (0.1km/h) than position (typically usually 5m, sometimes 2m-15m or more)
So if we don't know what the default settings for the SGS's gps are, we don't know what could really be the problem. Or do we?
Anyone who knows more about the gps hardware used in SGS could help...

It would indeed be interesting to try to disable the compass altogether and see what the effect on GPS is.
Perhaps I'll look at this. I'm not a big GPS user myself so proper testing would definitely not be me.

I am using "Maverick" from the market and it seems to be working properly....

thnks about all. Im sure that someday we'll have a operative gps. Keep investigating.
Regards.

[Q] Digital Compass

Hi,
It really seems that the G1 has a digital compass, but I couldn't see it documented and doesn't seem to be part of the specifications.
However I tested it a few times with GPS Toolbox and it seems to accurate to be based on GPS (also because I think GPS one would actually be "heading" and only generated if moving).
Anyone has any thought ?
Nick

Of course the G1 has a compass. Yeah GPS doesn't know anything about orientation, only 3d position. Along with the accelerometers the phone can know it's exact position and oriention.
Fire up google maps and look, your position marker is a compass arrow. All it's search results etc all show orientation arrow also. Plus if you tap the "my location" circle icon a second time, maps itself goes into compass mode (as can street view). The compass is a base standard of android, just don't trust it if you have a charge cable plugged in

Thank you.
I had a look again at gsmarena and it says that it has a digital compass, which at the time the phone came out was not yet a standard feature (even if GPS was present)
I was SO sure that I had researched it some time ago and it didn't say anything about it .. my bad.
Thanks !

[Q] Xperia V gyroscope problem.

Few day ago noticed that that on gps navigation - phone sometimes randomly restarts. At first i tought that its software issue - so i relocked bootloader made repair/install using PC Companion - no result.
In forum found servie menu code *#*#7378423#*#* and if i try run Compass or Gyroscope under Service test - instant restart follows.
Accelerometer shows 0,0000 on X, Y and Z.
So i understand it is hardware related problem - but my question is where are those sensors located - or they are located on main pcb?
There are some stuff attached to middle frame with numbers
1264-3598.1
1264-3593.1
1264-3621
1364-3592.1
What those things might be?

Bump. I know it`s against forum rules. Sorry.

Same problem with my Xperia, guess water got in and damaged it :? does anyone know where accelerometer/gyroscope is placed on the phone?

zaize said:
Few day ago noticed that that on gps navigation - phone sometimes randomly restarts. At first i tought that its software issue - so i relocked bootloader made repair/install using PC Companion - no result.
In forum found servie menu code *#*#7378423#*#* and if i try run Compass or Gyroscope under Service test - instant restart follows.
Accelerometer shows 0,0000 on X, Y and Z.
So i understand it is hardware related problem - but my question is where are those sensors located - or they are located on main pcb?
There are some stuff attached to middle frame with numbers
1264-3598.1
1264-3593.1
1264-3621
1364-3592.1
What those things might be?
Click to expand...
Click to collapse
I have exactly the same problem after changing my LCD screen several weeks ago.
Not only these test failed, but mine also randomly reboots itself when I'm browsing using Wifi/3G. LTE was disabled.
Passed Antutu Benchmark with decent score (~19000) and passed Antutu Stress test. I tested it till the processor got really hot (around 75c)
Already tried cleaning battery contact. didn't help the random restarts.
TodorSRB said:
Same problem with my Xperia, guess water got in and damaged it :? does anyone know where accelerometer/gyroscope is placed on the phone?
Click to expand...
Click to collapse
I have a HQ photo from my DSLR for the Gyro/Accel/Compass sensor. It's Invensense MPU Sensor. Will post the picture later after i got home.

Found your photo?

~iPod~nano~ said:
I have exactly the same problem after changing my LCD screen several weeks ago.
Not only these test failed, but mine also randomly reboots itself when I'm browsing using Wifi/3G. LTE was disabled.
Passed Antutu Benchmark with decent score (~19000) and passed Antutu Stress test. I tested it till the processor got really hot (around 75c)
Already tried cleaning battery contact. didn't help the random restarts.
I have a HQ photo from my DSLR for the Gyro/Accel/Compass sensor. It's Invensense MPU Sensor. Will post the picture later after i got home.
Click to expand...
Click to collapse
Yeah, I had those random reboots when browsing and/or taking pictures, I believe its because the phone tries to read Gyroscope Hardware and can't so it reboots. Can you please post it?

Guys,
I'm so sorry, I forgot uploading the photos.
I'm also already tried changing my battery, but still didnt fix this problem
Now,
Here (see my attachment)
Invensense MPU3050 is the culprit, as that chip provides the gyroscope and accelerometer [dunno whether it provides the compass or not]
http://www.invensense.com/products/motion-tracking/3-axis/mpu-3050/
The chip is "glued" in the right side of the phone, facing to the screen (notice the USB connector and the front camera
WTR1605L is 3G/LTE baseband
that samsung chip, is DDR2 ram, and there's the Qualcomm processor beneath that RAM (it's stacked)
PM8921 is the power management IC

Calibrate accelerometer and/or gyroscope

Hi!
I am facing problems with the orientation sensors (accelerometer and/or gyroscope), because installing several applications to test them (or use games), it is clearly observable, that they are a bit off (with enough to be disturbing when required). For example, games or tests that simulate a ball, and my phone is laying on a horizontal table, the ball rolls quickly to the edge of screen. This happens as well with the built-in tests in the "service menu" of the phone, for accelerometer and gyroscope also.
Do you have any suggestions how could I calibrate these sensors globally (for every app)?
Thanks.

Info
vetko said:
Hi!
I am facing problems with the orientation sensors (accelerometer and/or gyroscope), because installing several applications to test them (or use games), it is clearly observable, that they are a bit off (with enough to be disturbing when required). For example, games or tests that simulate a ball, and my phone is laying on a horizontal table, the ball rolls quickly to the edge of screen. This happens as well with the built-in tests in the "service menu" of the phone, for accelerometer and gyroscope also.
Do you have any suggestions how could I calibrate these sensors globally (for every app)?
Thanks.
Click to expand...
Click to collapse
factory Reset ur phone and then use PC companion app to Repair Firmware...
this can wipe current data and install fresh firmware on ur device
:good:

Hi,
I have the same problem. Only the x axis of the accelerometer seems to be affected : it show a value around 1 instead of 0 while the phone is sitting flat. Y and Z display normal values.
All the software solutions I have tried have had no effect at all... It seems the built-in test reads raw data from the accelerometer. It is hard to imagine how this can be a hardware problem though...
Anyway, in my case I believe a software fix (x=x-1) would do the trick but I have no idea how to do such a thing ! Any help ?
@vekto : Have you solved the issue by any chance ?

Would anyone care to try the accelerometer tests and post their results ?
Typing *#*#7378423#*#* will get you on the service menu. The two significant tests are "accelerometer" and "gyroscope".
I'd post some screenshots myself but I'm not allowed yet...

I'm having the same problem now. It seems one axis is affected. Haven't found a way around so far. This is sad because it affects the images taken with Google Camera Sphere mode. The images are badly aligned together with glitches in between. My phone wasn't like this before.

Either a SW fault - might be able to calibrate with GPS Status & Toolbox app, for example - or a FW fault - and reflashing ROM might help (highly unlikely) - or HW fault - the sensor has moved on the board (which is a bad sign anyway, might be on the way to disconnecting itself).

I sent mine to Xperia Care and got it back with the accelerator fixed. Still unclear if it's a HW problem...
It came back with a white spot on the screen (near the power button) though... so I sent it back again

I'm also having issues with the gyroscope. Installed Bubble app to calibrate the gyro. It showed the gyro was of a couple of degrees. Unfortunately the bubble app calibration doesn't work in a game like Need for Speed. It's very difiicult to achieve good times in the game right now since I have to hold it tilted to the left to go straight ahead.
So if anyone has a fix or workaround... Please do post.

Same problem, Seems after factory reset whith wipe dalvik cache.

any solution?

02nd March 2017, my autorotate has completely stopped working, restart, safe-deposit and reset do not fix. Diagnostics show Gyroscope Light Sensor and accelerometer failed testing, 3 years of same issue, surely there must be a fix that works by now?? ( please note, " turning it off and on again " does not fix it )
Helps Please

I have the same issue. Since last week, gyro, accelerometer, light and proximity sensors stop working. I've tried reflashing stock ROM without success. I have not warranty (almost 3 years old), so I even try to disassemble , disconnect an reconnect every flex (I don't know exactly were the sensors are located on the board). After that I get almost 8 hours of fully functionally sensors and then, they stop working again, so I'm almost sure it's a hardware issue.

Same problem for 3 years
I'm just now getting around to doing something about this. As my power button stopped working I can't post requested screenshot without going to the pc. I have been shopping new (fall 2018) phones after having the Z3+ since release. In my research I'm finding the phone still is better than Samsung, LG, and the pixel3 for me because the 3.5mm phone jack is mandatory for me using my device with an i-rig midi requiring both that port and the USB at the same time. I'm going to do everything I can to keep using this phone till it falls to dust. It's one of 4 Sony I've bought since the day Z1 came out of t-mo. I look forward to testing solutions. :good:

Some time after my post, I bought a new jack/proximity sensor flex and replace it. This solved the issue, but weeks later, the bottom portion of the touch screen becomes unresponsive. May be I have done something wrong... may be programmed obsolescence...

Hi I'm facing a problem of my gyroscope I don't know which one is not working a gyroscope or accelerometer. My gyroscope is so delay when I play pubg mobile and I can't also calibrate my Gsensor it always says FAIL but I put in a perfect flat surface please please please help me with this problems

Gyroscope and Magnetic Sensors Issue

I think this happened at around the time that I installed the latest update. I checked the sensors through the *#0*# menu and found that my gyroscope's value isn't moving and my magnetic sensor is spinning. I calibrated the magnetic sensor using Google Maps and also the Edge screen, but still it happens. I tried playing a racing game which relies on my gyroscope to steer and to my surprise, it works fine. I also tried to test my magnetic senor by downloading a compass app, and it properly displays my current bearing. I'm also not entirely sure but my accelerometer data aren't properly telling that it's on a flat surface although it actually is.
Is anyone also having this issue?

I did just remember that when I downloaded the update, I had an intermittent connection, would a part of the update be corrupted so that the drivers for the gyro and compass be mismatched?
I also have a youtube video showing what my screen displays when I do a sensor test.