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Old Sep 24, 2013, 01:49 PM   #1
tharepairguy
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iPhone 5s accelerometer/gyroscope/compass values incorrect

Lined up against my apple box separating my iphone 4 and iphone 5s pointing directly south, here are the readings. I did this because the stainless steel band and/or other parts of the 4 were affecting the compass when lined up against each other. I might go over to a buddies and use his iphone 5 to take pics or video. Lets keep this thread civil and on track. Please present facts only. Trolls need not reply...

There are now quite a few article's about this issue:
http://www.cultofmac.com/247282/ipho...pass-off-base/
http://gizmodo.com/the-iphone-5s-mot...-up-1440286727
http://www.macrumors.com/2013/10/03/...ars-incorrect/
http://9to5mac.com/2013/10/03/iphone...ings-for-some/
http://venturebeat.com/2013/10/03/ap...-rely-on-them/
http://news.cnet.com/8301-13579_3-57...be-widespread/
http://www.forbes.com/sites/tonybrad...rs-are-jacked/

Both Compass's set to magnetic north:
iphone 5s reads: 165s
iphone 4 reads: 179s <--- Reads correctly compared to the compass in my cessna

Swipe from right to left to get Apples level app:
iphone 5s reads: -4 degrees
iphone 4 via iHandy level reads: 0 degrees level
2 different Johnson levels used as well. 24" and 48". I had to raise the level until the bubble bottomed out in the glass to make the iphone 5s read zero.

Have you tested this? I have contacted apple support and they suggested replacing the phone. At this point, I'm going to wait it out as I can live with this defect until I know the problem has been fixed. I spent 34.99 oh a front and rear film protector that I will have to eat when/if the device gets replaced. OCD does not alloy me to use any device naked. What are your results? good or bad...

If yours it out of spec. I suggest reporting this to apple directly to get this problem resolved quicker. They said that they are monitoring feedback in real-time, at this time

www.apple.com/feedback

Ok so that calibration procedure had no effect on the invalid data from the senors. 7.0.2 update had no positive effect as well. Sensor-Gate is still lurking...

7.0.3 seems to have corrected the problem for a lot of people.

Last edited by tharepairguy; Nov 1, 2013 at 01:50 AM.
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Old Sep 24, 2013, 02:26 PM   #2
AceMason
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Do you know why the other thread got closed?
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Old Sep 24, 2013, 02:27 PM   #3
doctorandrew
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Quote:
Originally Posted by AceMason View Post
Do you know why the other thread got closed?
So people should just keep this problem to themselves since the other thread closed down?
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Old Sep 24, 2013, 02:28 PM   #4
AceMason
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Quote:
Originally Posted by doctorandrew View Post
So people should just keep this problem to themselves since the other thread closed down?
lol no I was actually curious why it closed because I contributed to that thread.
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Old Sep 24, 2013, 02:28 PM   #5
user-name-here
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Quote:
Originally Posted by AceMason View Post
Do you know why the other thread got closed?
http://forums.macrumors.com/showpost...&postcount=142
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Old Sep 24, 2013, 04:50 PM   #6
richard371
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The other thread was shut down because of a certain user or 2 that was derailing it. This is a clear problem affects gameplay for games and apps that use the accelerometer. Xplane for instance the plane drifts to the right big time on my device. Plus or minus 1 is of for allowable tolerances but not 4, 5, or 6 many of us are getting. Don't let someone tell you its OCD and is acceptable its not at least for people who use this function.
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Old Sep 24, 2013, 05:44 PM   #7
wepiii
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iPhone 5S Gyro issues

I posted this in another thread and a mod immediately closed the thread for some reason unknown to me. Is anyone else's gyro not working correctly on their 5S?

Click image for larger version

Name:	ImageUploadedByTapatalk1380062563.755992.jpg
Views:	849
Size:	63.9 KB
ID:	435932

Left iPhone 5S
Middle iPhone 5
Right iPhone 5

Also, this is really weird... None of the compasses are reporting the same direction.

Click image for larger version

Name:	ImageUploadedByTapatalk1380062633.128370.jpg
Views:	980
Size:	67.9 KB
ID:	435934

Anyone else experiencing this?
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Old Sep 24, 2013, 05:46 PM   #8
Jesla
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As far the compasses all different, are they all set to true north or magnetic?

Mine 5S is off only 0.4*…….
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Old Sep 24, 2013, 05:57 PM   #9
wepiii
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I have no idea honestly, where is that setting and what is the difference haha
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Old Sep 24, 2013, 06:07 PM   #10
Irock619
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Quote:
Originally Posted by wepiii View Post
I posted this in another thread and a mod immediately closed the thread for some reason unknown to me. Is anyone else's gyro not working correctly on their 5S?

Attachment 435932

Left iPhone 5S
Middle iPhone 5
Right iPhone 5

Also, this is really weird... None of the compasses are reporting the same direction.

Attachment 435934

Anyone else experiencing this?
The compass is off on all phones because you have them all together. The magnetic field from the electronic components will throw it off.
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Old Sep 24, 2013, 07:02 PM   #11
gym007
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5S accelerometer is messed up

Mine is 4 degrees off on the tilt function and the compass is also slightly off. Anyone else having this problem?
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Old Sep 24, 2013, 07:03 PM   #12
gentlefury
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How do you know its 4?
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Old Sep 24, 2013, 07:18 PM   #13
Mr. Buzzcut
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Yep. Just got mine today and same deal with the orientation. I have to lift the corner for it to zero out. This is on a known level surface.
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Old Sep 24, 2013, 07:24 PM   #14
wepiii
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Yep. 5S on left, other two are iphone 5

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Old Sep 24, 2013, 07:26 PM   #15
Jesla
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Yup, it must be because mine is of only 0.4*.
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Old Sep 24, 2013, 07:26 PM   #16
chrisvanhorn
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The 5S might actually be more accurate due to the M7, which means the iPhone 5 devices could possibly be showing an incorrect reading. Just a thought.
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Old Sep 24, 2013, 07:33 PM   #17
iBighouse
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I can just visually see that mine is also in error. I guess if could give some numbers to back that up if needed. My 4s was very accurate. This level seems sloppy and loose. It does make me wonder two things:

1. Since the new M7 motion chip has a lot to do with running numbers for rhe gyro, might bad data in from a gyro that's off by significant amounts result in bad numbers on the output side?

2. Is this a software issue and easily fixable, or is this a hardware issue that might not be so easily fixed?

Update: I leveled it against a Stabila smart level. Seems it's off by 4 degrees. That's unacceptable and a significant amount- especially in light of this phone being touted as such a motion device.
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Old Sep 24, 2013, 07:39 PM   #18
Jeff3f
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Would be more valid if there were a leveled level tool in the frame too!
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Old Sep 24, 2013, 07:43 PM   #19
gym007
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Quote:
Originally Posted by gentlefury View Post
How do you know its 4?
Because when I place it on a flat surface it's always 4 degrees off

My 4S with ios7 was accurate
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Old Sep 24, 2013, 07:53 PM   #20
i0Nic
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Are you also seeing a jittery/jump effect when you unlock the phone? As per this thread - http://forums.macrumors.com/showthread.php?t=1643977

Could be a software/hardware issue with the motion sensors.

I'm also seeing the same thing as you with the gyro being a bit off.
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Old Sep 24, 2013, 07:56 PM   #21
gym007
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Yes, as mentioned in my thread it's about 4 degrees off level

I wonder why that other thread got closed. It seems that this is a widespread issue
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Old Sep 24, 2013, 08:02 PM   #22
iBighouse
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Quote:
Originally Posted by gym007 View Post
I wonder why that other thread got closed. It seems that this is a widespread issue
Dunno why it was so suddenly closed. Apparently It went "off the tracks" so let's try to keep this thread on the tracks!

I went to apple.com/feedback and submitted it as a bug item. Maybe if others do likewise we can spur a fix for it!
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Old Sep 24, 2013, 08:03 PM   #23
tharepairguy
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Don't forget to do your duty and submit feedback to apple if your getting similar problems...

Last edited by tharepairguy; Sep 25, 2013 at 11:47 PM.
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Old Sep 24, 2013, 08:06 PM   #24
fedecape
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-3 here :S
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Old Sep 24, 2013, 08:07 PM   #25
asleep
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Quote:
Originally Posted by gym007 View Post
I wonder why that other thread got closed. It seems that this is a widespread issue
Mods will close a duplicate topic, or sometimes merge topics. So if you get locked, search for an existing thread on same subject.
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