iPhone 5s accelerometer/gyroscope/compass values incorrect

[richard371]

Personally I don't think Apple has a clue on this issue and how to fix it or even cares for that matter. They wanted to take my device too. I explained to the guy in Cuppertino to go check their units most of them do it. He dodged the question.

I wish this would make headlines somewhere to really get their attention.

Got a call back from a different senior advisor today and he told me engineering wanted to capture my device to see what's going on.

I politely told him no, and if he wants to see a defective device, all he has to do is wait in line with the rest of the crazy people.

Well, not literally, but along those lines, pretty much. Anyway, he left to find out what's going on, but it does sound like things aren't quite ready for a fix yet...

 

[WilliamG]

Personally I don't think Apple has a clue on this issue and how to fix it or even cares for that matter. They wanted to take my device too. I explained to the guy in Cuppertino to go check their units most of them do it. He dodged the question.

I wish this would make headlines somewhere to really get their attention.

It sure does seem that way. Guy is supposed to get back to me after speaking with engineering.

Why can't WE speak with engineering? How awesome would that be?

 

[richard371]

According to the front page we may see 7.0.3 next week. Im not holding my breath that it fixes this issue.

 

[gs28]

Man, I lost sleep over this...

I wonder if the units from the first shipping wave suffer from this issue as well.

 

[WilliamG]

Got another call back from Apple. They want to send me a new phone (without a credit-card hold). Figured why not? I can send it back if it's not perfect in this regard.

So I agreed. We'll see what happens. Certainly not hopeful, but I don't have to go anywhere or do anything or have a credit card hold. We'll see…

 

[W1246]

Just had a new grey 64 gb iPhone 5s delivered straight to me from China, manufactured week ending 29 Sept, C2 factory.

Perfect so far, including the gyro. Just so you know a replacement phone would probably have this fixed.

 

[Marco123]

Just had a new grey 64 gb iPhone 5s delivered straight to me from China, manufactured week ending 29 Sept, C2 factory.

Perfect so far, including the gyro. Just so you know a replacement phone would probably have this fixed.

So it's a HW fault then.
If it was SW then all phones with the M7 chip would be affected. No wonder apple are choosing to ignore it but I'm curious to know what the fault is and with millions sold it would be interesting to see how many are bad.

 

[madKIR]

So it's a HW fault then.
If it was SW then all phones with the M7 chip would be affected. No wonder apple are choosing to ignore it but I'm curious to know what the fault is and with millions sold it would be interesting to see how many are bad.

I think a lot of the phones are affected. As I said above, all but one display units at the 5th Ave store were off.

 

[Marco123]

I think a lot of the phones are affected. As I said above, all but one display units at the 5th Ave store were off.

Makes you wonder how they will hide this.
It can't be ios7 or all phones would be affected.

 

[U4icLab]

Just had a new grey 64 gb iPhone 5s delivered straight to me from China, manufactured week ending 29 Sept, C2 factory.

Perfect so far, including the gyro. Just so you know a replacement phone would probably have this fixed.

Can you let us know if the gyro remains perfect, or if it slowly loses it's calibration? Thanks!

----------

This is a link to an older article re: mobile gyroscopes. Maybe it will help out a few. After reading it, it does seem more hardware-ish : /

http://www.ifixit.com/Teardown/iPhone+4+Gyroscope+Teardown/3156/1

 

[Sodner]

So many people never try the gyro/compass/level that this problem is going largely unnoticed by the masses.

If I had to guess I would think that 90% of the first batch of phones have this problem.

 

[U4icLab]

So many people never try the gyro/compass/level that this problem is going largely unnoticed by the masses.

If I had to guess I would think that 90% of the first batch of phones have this problem.

Do you think it's even worth doing a Genius Bar replacement at this stage?

 

[Jets fan]

 

[BMcCoy]

To confuse things a little, I just took delivery today of a 5S - ordered through the UK online store. And its gyroscope is bang on 0. When put on a confirmed flat surface, it's 0 every time.

 

[madKIR]

There is hope for a quick fix then.
I was afraid that the particular chip they're using this time is defective in its entirety.

 

[Jman13]

I don't know why anyone is jumping to conclusions about the M7 chip. The inclusion of this coprocessor has no bearing on the calibration of the device.

 

[madKIR]

I don't know why anyone is jumping to conclusions about the M7 chip. The inclusion of this coprocessor has no bearing on the calibration of the device.

I didn't say it's the M7's fault. It might be a separate chip responsible for the gyro/сompass part.

 

[nanocustoms]

Sometimes in the pcb assembly process, the solder is improperly "stenciled" on too thick in some areas. Its possible that the accelerometers aren't sitting flat or some other anomaly.

My other thought is that components such as the speaker/microphone assemblies are improperly shielded.

my. 002

FWIW i have the same issue, 4 degrees off. Launch day 16gb Space Gray ATT

Cheers

Chris

 

[Ceebee1980]

Still don't understand why nobody thinks this could be software related.

Saying it's fine on the iPhone 5 is oversimplifying os-software to the extreme. The components are in no way identical on the two models of iPhone.

 

[Sodner]

Do you think it's even worth doing a Genius Bar replacement at this stage?

For me no. But I will be keeping an eye out for patches and if say a 7.1 comes out in Jan 14 and it's not fixed I will be thinking hardware and will probably be at the Genius Bar by Feb.

 

[madKIR]

Still don't understand why nobody thinks this could be software related.

Saying it's fine on the iPhone 5 is oversimplifying os-software to the extreme. The components are in no way identical on the two models of iPhone.

It would be showing the same result for every single iPhone 5S. However, the degree of the issue varies from device to device. Furthermore, somebody posted above that they got a perfect phone in regards to this.

 

[Ceebee1980]

It would be showing the same result for every single iPhone 5S. However, the degree of the issue varies from device to device. Furthermore, somebody posted above that they got a perfect phone in regards to this.

^And like 5 more people posted that they got a perfect phone that drifted off after a few days.

Calibration being lost wouldn't necessarily mean all phones have the same reading when off...

 

[U4icLab]

I suppose it's possible that the chip may be achieving accurate values but not reporting it precisely because of the way the software runs (differently) on a 5s. Fingers crossed it's SW.

 

[jpcarro]

^And like 5 more people posted that they got a perfect phone that drifted off after a few days.

Calibration being lost wouldn't necessarily mean all phones have the same reading when off...

I can verify the drifting as well. My 5s was -1° and I reported this in the closed thread on this topic four days after purchase. I made my measurements carefully and got a solid -1° each time.

A couple days later, I repeated my initial tests and this time, it was solidly -2°, and has been since. I know it's only a 1° difference, but I have no idea why.

 

[W1246]

To confuse things a little, I just took delivery today of a 5S - ordered through the UK online store. And its gyroscope is bang on 0. When put on a confirmed flat surface, it's 0 every time.

Same case, C2 factory as well?