ios7.1 thanks for destroy my wifi

Ok, possible issue:

The Wifi antenna might be monitored and cut in case of overheat for a short while.

If the monitor is not working properly, the antenna overheats and reports failure and the iOS now believes, it is gone forever and deactivates wifi switch.

With the hairdryer trick, iOS is forced to check all hardware again for availability and - what a surprise - it finds wifi antenna. So I believe, it is a software issue.

This heating trick with hair dryer has been well know (as you can see in my previous message too). But it won't last long, in most cases. So be warned.

he178 wrote:

Ok, possible issue:

The Wifi antenna might be monitored and cut in case of overheat for a short while.

If the monitor is not working properly, the antenna overheats and reports failure and the iOS now believes, it is gone forever and deactivates wifi switch.

With the hairdryer trick, iOS is forced to check all hardware again for availability and - what a surprise - it finds wifi antenna. So I believe, it is a software issue.

No, it's still a hardware issue. Heating the device may get the hardware to 'reset' something, and then re-requests an update from the software. But temperature cannot modify the code of software.

Sorry, you did not understand what I wrote.

Please read carefully and try to understand

before you comment.

Something interesting. When the bluetooth came back on the settings had reverted to an earlier stage before the 7.1 update. I had renamed my cars bluetooths from car multimedia (Default setting for lexus) to the names of the cars. After heat and cool they reverted back to car multimedia.

BTW I used my oven to heat mine. I reccommend frying your phone with butter and onions😮😮😁 MMMMMM!!! delicious iphone!!

May be in simple words:

The fault occurs after software update, indicating something to do with software.

I believe, that iOS believes for some reason, that the wifi sensor is no more available, may be bad temperature management during wifi sensor working hard.

Then iOS does not look for the sendor any more.

Only after hair dryer trick, a hardware check is made and the sensor is found again.

So in this case it MUST be a software issue.

Conclusion: The software can not deal good enough with hardware variations.

Hardware variations are normal, software must be able to deal with it.

Do you have an idea when it occurs and if the heting trick works again ?

Thanks

Thanks Apple for destroying my iPhone 4s!!

My wifi was searching but not finding any signals but now it is completely greyed out!!

I have tried restarts, reset network settings and it does not resolve the issue.

It only happened after I upgraded to ios 7.1 so it's Apple's fault and I'm not impressed in the slightest!

Q. What are Apple doing about it? A. Nothing!

To add insult to injury my phone is not recognised in iTunes and wants to complete a full factory reset so I can't even restore it to an earlier back up.

I was considering Android.........now my minds made up!

No, you're wrong again. Nothing about a hair dryer can re-write code. The heat may cause a physical piece of hardware to 'trip', which is what provides the 'request' to the software.

The only reason the fault occurs after a software update is because the HEAT generated by the PROCESSOR while it is INSTALLING the SOFTWARE cause the wi-fi HARDWARE problem to be revealed.

The heat is a BYPRODUCT of the processor.

Re-heating the device is what may be causing the HARDWARE to 're-trip', and then sending a signal to the software.

If your gas pedal in your car, when pressed down, is not accelerating the engine, does that mean the engine is broken, or that the cable connected from the gas pedal to the fuel injection is broken? If the gas pedal is not manipulating that cable, it's not the ENGINE'S fault. It's the CABLE's fault.

If the hardware is not sending the proper signal to the software, then it's a hardware error, not a software error.

You're assuming the hardware variations in this case are 'normal'. That's a horrible assumption.

If it was the software (which is IDENTICAL in all iPhone 4S units running iOS 7.1), then ALL iPhone 4S units (including mine) running iOS 7.1 would have this problem. And that is clearly not the case. Therefore, the software is not the issue. This is called 'logical reasoning'.

This is a case of the hardware in your particualr unit being defective.

Please stop knowing what it is, you don't.

Your example demonstrates that. It' not that simple.

You should put yor efforts in trying to identify possible reasons instrad of prejuding ideas.

What are your goals ?

he178 wrote:

Please stop knowing what it is, you don't.

Your example demonstrates that. It' not that simple.

You should put yor efforts in trying to identify possible reasons instrad of prejuding ideas.

What are your goals ?

Your logic is in error.

Explain why, if it is the software (i.e., the operating system, the iOS) why the SAME problem does NOT occur on all iPhoen 4S units running that iOS?

The iOS is identical for all those devices. There's no way to modify the code of the iOS (at least any authroized way). It's either installed or not installed. However, due to manufacturing processes, it is possible for the hardware of two iPhone 4 S units to be different.

It's called Occam's Razor. Look it up.

Based on your posts and your failure of basic toubleshooting logic, I can guarantee you that I know more about this issue in particular, and iPhones and electronic devices in general, than you.

U said: The iOS is identical for all those devices. There's no way to modify the code of the iOS. It's either installed or not installed. However, due to manufacturing processes, it is possible for the hardware of two iPhone 4 S units to be different.

Exactly, thats the case, thats what I say, and the old iOS could cover more variation of sensors than the new one.

So iOS update is the root cause and wifi sensor is the hardware problem though.

With hairdryer not the sensor gets a fix, imagine a broken engine due to cooling system problem can't be fixed with heat, no, the software runs a different and slower boot process that helps finding the sensor again.

No change to the software with heat, but igniting an emergency boot process that is implemented.

No, the old iOS could NOT cover more variations. The new one actually can. This wi-fi greyed out issue has been around long prior to iOS 7.

There are threads on this very forum related to iPhone 4S units having wi-fi greyed out after an iOS 5 or iOS 6 update.

https://discussions.apple.com/thread/5112134?start=0&tstart=0

https://discussions.apple.com/thread/4909703

https://discussions.apple.com/thread/4501118?answerId=20264313022#20264313022

https://discussions.apple.com/thread/5033919

https://discussions.apple.com/thread/3951199

I could go on, but perhaps now you see the point.

This problem has been reported prior to the iOS 7 release.

My 4S is barely out of warranty just over 1 year old. So what you are defending is hardware that fails after 1 year. Wow what quality😠! I dont give a crap if it is software hardware or mediumware that is to blame. I am of the age that remembers when you would buy an electronic device you would expect to get at least a few years out of it. Please go back to your desk at apple and stop defending them because it is obvious that this is a 2 prong issue. The software messed up the hardware therefore it is apples fault and they should replace these phones just like an automotive recall. BTW automotive recalls get done AFTER the warranty is up.