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ios9 wifi not working

Hello,


Since updating to iOS 9 I cannot connect to my work wifi. It keeps telling me the password is incorrect even though it is identical to my PC which is connected. I have an iPhone 5s 16gb. wifi at home works fine.

iPhone 5s, iOS 9

Posted on Sep 17, 2015 1:55 AM

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Question marked as Best reply

Posted on Sep 17, 2015 2:08 AM

Take a look at this Apple Support article:

https://support.apple.com/en-us/HT204051

Reset your network settings.

Settings - General - Reset - Reset Network Settings

Reset your device. This won't delete your data stored on the phone.

  • Press and hold the Sleep/Wake button
  • Press and hold on the Home button
  • Keep holding both buttons until the display turns off and back on with Apple logo on it.

Alternatively, you may go to Settings - General - Reset - Reset All Settings

https://support.apple.com/en-us/HT201559

188 replies

Sep 18, 2015 6:49 AM in response to tdollimore

Forget your Wi-Fi networks and reconnect to them. To get that done, go into your Settings > Wi-Fi > Select your connection > Tap Forget this Network at the top of the screen.

If those fixes don’t work, take a close look at your router. recommend you unplugging it for a good minute or so then plugging it back in. If that doesn’t help, see if there is a firmware update for your router. Each router is different so you’ll need to consult your manual on how to do this. If it is still do not working, taking the device to an Apple Store to get looked at.

Sep 18, 2015 7:22 AM in response to angian00

Thank you for replying. I've tried most of the items in your list, apart from a restore and going to Apple. Will consider a restore if nothing else helps.


Please see some of the posts that followed your own, some solutions have been found and they have kindly been shared by others, perhaps they will help you as well.... Good luck.

Sep 18, 2015 7:40 AM in response to tdollimore

Not everyone in this thread is experiencing the same type of problem. For me, I do not believe there is anything wrong with my router -- since it worked perfectly minutes before I upgraded to iOS 9 on 2 devices -- and depending on what I do, I can connect to wifi.


1. If the SSID is hidden, my iPhone and iPad cannot find it. It is not a question of me not knowing how to set it up -- and I have done everything and every reset option short of a complete wipe-out of my device and full reinstall.

2. If the SSID is visible, my iPhone and iPad have no problem. As soon as I hide it again, my connection immediately drops.

3. If I tether my iPad to my iPhone (on cellular) and add the hidden network, the iPad finds it and switches to wifi. If it restart the iPad, the network is lost again and I cannot add it back.


Whether hiding an SSID is useless or not, Apple clearly supports it otherwise the "Other" option wouldn't be there. There definitely is a problem with iOS 9 -- perhaps with certain models of iPad or iPhone and perhaps with certain routers.

Sep 18, 2015 7:58 AM in response to tdollimore

5Ghz WIFI do not work after IOS 9 Upgrade!


iPhone 6+, Guest WIFI in our company are using the 5GHz band and i'm unable to connect to it after the upgrade!

iPhone seems also to have issues to identify and display those SSID's on the 5Ghz band, serious problems.....

Worked perfect before the upgrade.


(MERU WIFI soultion in place and login via captive portal page, unable to connect and do ont either get any browser window to login any longer)


/J

Sep 18, 2015 10:44 AM in response to tdollimore

So far the most plausible explanation I've heard is the new requirement to support only TLSv1.2 for 802.1x authentication. And, it only seems to be affecting devices capable of ApplePay. Due to the PCI 3.0 security, this makes the most sense. If this turns out to be the root cause, Apple could have probably done a better job at communicating the potential outage.


If you can no longer connect after IOS9, check that your wireless authentication can support TLSv1.2.


http://communicaone.com/blog/issue-with-tls-v12-and-ios-9/2015/8/17


https://developer.apple.com/library/prerelease/ios/technotes/App-Transport-Secur ity-Technote/

ios9 wifi not working

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