iphone 4s - wifi not working at all.

I am having wifi issues as well. Using an Apple Time Capsule with 2.4 Ghz wireless N only settings. Speed test app shows a healthy download speed until less than halfway into it, the connection chokes to nothing. Did hard resets on the iPhone 4S and disabled iCloud but I still cannot connect. Disabling wireless and using 3G only is the only solution. Why is this happening?

Refresh Your Network Settingts

h2009 said:

Hi there,
I've got a strange issue and I believe its a bug or faulty iPhone hardware but it seems I cannot connect to any wifi network that uses WPA/WPA2
What I mean is that the wifi connects to any AP but for some reason external addresses like google.com do not work. All internal address do.

Its not a network issue as every other IOS5 device works fine and the network has no problems. Its something to do with iPhone 4s.

Click to expand...

Settings / general network....

Did you reset network settings?

Iphone 4S wifi & bluetooth not working

This may seem strange and I'm sure Apple would never suggest or promote this but...switch your phone off. Point a hairdryer at it on medium to high heat for between 3 and 6 minutes. Allow to cool and then power phone on again. This worked for me. Previously, both the wifi and bluetooth buttons were greyed out in settings, they now work perfectly! I believe it has something to do with the wifi/bluetooth chip ceasing to work and the heat gets it going again.