iOS 6 devices & wi-fi connectivity problems

Discussion in 'Tomato Firmware' started by bripab007, Sep 28, 2012.

  1. bripab007

    bripab007 Network Guru Member

    Keying of this post in another thread:

    I'm running an E3000 w/ Toastman v1.28.7500.5 MIPSR2Toastman-RT K26 USB VPN.
    Router had been flawlessly serving simultaneous 2.4GHz and 5GHz APs for many moons for my three iOS 5.x devices and Mac Mini. Upon upgrading to iOS 6, the two iPhones (which can only connect to 2.4GHz AP), would either connect to the wifi but not have any LAN/WAN connections working or would not connect to the AP at all.

    The iPad was also unable to connect to the 2.4GHz AP, however, was able to connect to the 5GHz AP just fine.

    Rebooting the router worked maybe one out of five times. Rebooting the iOS devices worked maybe once out of five times. Performing a "forget network" on the iOS devices and then reconnect made no discernible difference. Performing a "reset network settings" on the iOS devices made no discernible difference. Resetting the router to defaults and NVRAM reset made no difference. iOS devices were still unable to connect, even with default wifi AP settings with no encryption.

    Finally settled on turning off router's 2.4GHz AP and deploying a 320N running Toastman v1.28.7497.x as a 2.4GHz AP, and all has been well ever since.

    Mac Mini appeared to weather all of this just fine, retained ability to connect to either 2.4GHz or 5GHz APs without issue.

    Here's a Macrumors thread on the matter:

    And here's an Apple support forum thread on the matter:
  2. xtacydima

    xtacydima LI Guru Member

    It sounds to me like iOS 6 needs a patch/fix for the issue. I don't think it's a problem on the router's end. You are having way too much inconsistency to blame it on a bug within Tomato... just my thoughts.
  3. myersw

    myersw Network Guru Member

    Running Shibby 101 on E4200 and have no issues with iPhone 4 running iOS6 on 2.4GHz, have not tried 5GHz. Using WPA2 (AES) security. Can browse web and update iCloud without issues. Have seen the reports though.
  4. mpegmaster

    mpegmaster Addicted to LI Member

    In iOS 6... ip6 is the first protocol it tries uses to acquire network connectivity.

    With that said... disable the ip6 on the iOS device and all is good.

    I have seen many a forum stating difficulty connecting to AP's from many different manufacturer's on many campuses.
    It is a known issue with Apple devices, Android/Smartphones this is not a issue.

    iOS never goes the known standard, ip4 then ip6. To iOS it's the opposite.

  5. bripab007

    bripab007 Network Guru Member

    I agree, that's why I'm not blaming it on Tomato. That said, two different versions of Tomato produce completely opposite results. But, none of this was a problem until iOS 6...

    UPDATE: So I just noticed my E3000's 2.4GHz AP settings for Channel Width and Control Sideband were set to 20MHz and Lower, respectively, so I changed these to match the working 320N AP, at 40MHz and Upper, respectively.

    All of a sudden, the phone connected and appears to be working just fine. I'll report back if the situation changes.

    Is 20MHz and Lower what those settings are by default in Tomato? I'm not sure I would've ever touched those settings after having installed Tomato, but I suppose it's possible I did at one time for some forgotten logic that came back to bite me on iOS 6...
  6. bripab007

    bripab007 Network Guru Member

    Just kidding, I spoke to soon: it's not working again already :-/
  7. LanceMoreland

    LanceMoreland Network Guru Member

  8. ghoffman

    ghoffman LI Guru Member

  9. LanceMoreland

    LanceMoreland Network Guru Member

    This is the reason I so dislike Apple. They believe that they must control every thing you do on their devices, what software you can use and where you get the software. Login to wifi should be totally independent of Apple. This demonstrates that Apple can remotely control your ability to log onto wifi. Unbelievable. Are they spying on their users? I better be careful what I say. They may send their Gestapo Attorneys to sue me.

    EDDYMERCKX Network Guru Member

    Yeah, only Apple would do something like that:
  11. bripab007

    bripab007 Network Guru Member

  12. mpegmaster

    mpegmaster Addicted to LI Member

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