[AusNOG] Apple iPhone5 Wifi connectivity problems - faulty Apple wireless chipsets?

[Matthew Moyle-Croft]

Also can be an issue with 802.11n with 20Mhz vs 40Mhz channels.  

Highly recommend reading: http://support.apple.com/kb/HT4199 which outlines the best settings.

Make sure, for instance, that the security is set to WPA2 with AES.  

I've had no issues with the iPhone5 and wifi.  Works well on 2.4 and 5 ghz with 802.11n.  

MMC

On 06/01/2013, at 6:11 PM, Travis <mallik at internode.on.net> wrote:

> Since it connected when you changed the channel I am wondering if it might have something to do with the regulatory domain. I have had problems in the past where the channel selected by the access point was outside of regulatory domain of channels allowed by the iphone.
> 
> Although channel 1 should theoretically be fine anywhere.
> 
> Just my 2c
> 
> 
> On 7 January 2013 09:56, Bevan Slattery <Bevan.Slattery at nextdc.com> wrote:
> Hi everyone happy new year.
> 
> I've tried to post this twice to the Apple Support Forums but they seem to
> not like it.
> 
> https://discussions.apple.com/thread/4679816
> 
> I was wondering if anyone on AUSNOG is having the same iPhone5 Wifi issues
> and if so, please contact me off-list.
> 
> Could be nothing, could be something.  The fact Apple keep blocking my
> posts is a bit bizarre too.  Maybe they didn't like the tag
> shame-on-apple? :)
> 
> Ta
> 
> [b]
> 
> BACKGROUND:
> 
> 
> iPhone 5 with IOS6 and had nothing
> but Wifi problems.  Home network not working (despite being upgraded to
> latest firmware).  Intermittent access while overseas in US hotel (all
> my other devices were fine) and access to my mifi was generally Ok.
> Back home and upgraded IOS 6.02 keen to get this disaster sorted.  Still
>  doesn't work.  Reset my network settings, still doesn't work.  turned
> off LTE, still doesn't work.
> 
> 
> POSSIBLE SOLUTION:
> 
> 
> After
>  a ridiculous amount of grief, I had all put totally given up.  I read a
>  post  about the fact that the person could connect on his work 5Ghz
> network and decided to go to the config of my wifi access point to see
> if I could "turn off" the 2.4Ghz option and just leave the 5Ghz option.
>  Not an option.  I use a Fritzbox (really happy with).
> 
> 
> But
>  while I was playing around in the wireless options, I noticed that my
> 2.4Ghz frequency transceiver was set to the recommended channel setting
> of "autoselect".  Autoselect seemed to be selecting channel "1" on the
> 2.4Ghz was in use by three other wifi's around here.  The wireless
> settings page (which is really good on the Fritzbox) showed that
> channels 1-7 were in use by other access points, but 8-14 were clear.  I
>  over-rode the automatic channel selection and selected Channel "10",
> hit "save this setting" and then BAM! MY IPHONE CONNECTED TO WIFI FOR
> THE FIRST TIME AT HOME!!!
> 
> 
> Now I appreciate at this
> stage it doesn't make much sense and it maybe illogical, but it would
> appear that on my iPhone (at this stage and it's only been an hour)
> that either going "manual" instead of automatic channel select or
> selecting a "clear" channel on my access point has resulted in my iPhone
>  locking onto Wifi (or both).
> 
> 
> Maybe iPhone 5 has a
> problem with access points that do certain "handshakes" on automatic
> channel selection (which doesn't quite make sense because its already
> made the channel selection) or maybe it has a problem in the "channel 1"
>  band of 2.4Ghz (which could mean a faulty piece of hardware in the
> wireless chip - which could be why Apple have kept quiet), or maybe it
> doesn't like "sharing" channels or maybe the wind just changed direction
>  and it decided to work.  But I had to share this in case this actually
> works with anyone else.
> 
> Be keen to see if this works for
> anyone else and I have my fingers crossed that it keeps working and this
>  wasn't some fluke and it falls back.
> 
> FURTHER RESEARCH:
> 
> I've
>  done some research on this  and it appears that everyone who is having
> problems with Wifi connectivity on the iPhone5 appear to have an Apple
> WIFI chipset.  Not all Apple Chipsets are having problems but all the
> problems seem to be with the Apple Chipsets (only brief research
> conducted).
> Intel Wifi/Wireless Chipsets seem to be fine.
> 
> 
> My Wifi
> Chipset MAC address on my iPhone started with 34:C0:59 (which is listed
> as Apple).  Can I ask that you enter your MAC address (by going into
> Settings>General>About and scroll down to Wifi Address) into this
> website and see which chipset you are using (Apple or Intel).
> 
> 
> http://curreedy.com/stu/nic/
> 
> Keen
>  to know if it's the Apple Wireless Chipset.  Please post the following
> if you are having problems and whether this solution worked:
> 
> 
> [example]
> 
> Problem:  iPhone5 can see wifi access point but can't connect
> MAC Address (only need first 3 hex codes) 34:C0:59
> Chipset Manufacturer (enter into site above):  Apple
> 
> I'd be keen to also see if the people having bluetooth problems are also
> using Apple Wireless Chipsets too.
> 
> Thank you!
> 
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