Q: ios9 wifi not working

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

My colleague and I are also having the same issue. Tried resetting network settings. Just says incorrect password although we know the password is right as it works on other devices.

Just checked with my other colleagues who upgraded to iOS 9. The wifi doesn't work for any of them but does for iOS 8. Must be some bug

Same issues here. IPad Air 2 will not connect to wifi since upgrade. Resetting etc does nothing.

What sort of wireless do you have at work. Ours is a Meru controller using WPA2 PSK encryption.

My wifi works at home ok on 5g and 2.4.

Just tried again. I turned off modem for a full minute while also resetting network settings and that seems to have done the trick. Working again.

Hi,

Same problem here, works at home but not at the office. I upgraded my iPad Air 2 yesterday and did my iPhone 5s today at the office (have not tried my iPhone at home yet). My iPad and iPhone did'nt "see" the office wifi, but if I shared the internet connection from my iPhone and connected my iPad the network showed up and I could connect, strange.

I have updated two other iPhones one 5s and one 6, they have the same problem. I did change from WPA to WPA2 on the wifi controller (Merü), same problem.

I will do a reboot of the controller when everybody has left but I don't think it will fix the problem.

//Glenn

I am having the same problem.  I am at my office building trying to log in as Guest on my iPhone, but keep getting the message Unable to Connect to Network.  This started after I updated to IOS 9.  I cannot downgrade to IOS 8 because I need to back up my cloud first, and to do that I need wi-fi!  I have tried resetting my network settings but that is not working.  Help!

I did the reboot of the controller but no change.

/Glenn

Hello all, I have here the same issue: after updating to ios 9 , I can't turn on WiFi on my iphone 6.

This is really annoying! Did all the tips posted here, reset network, reset all settings and the problem persists.

Why apple released this update? I had the same problems with ios 8.4.1 but there when I reset the entire phone, it began to work again,

but now What?

for me even 3g doesn't work