Currently Being ModeratedMar 4, 2013 12:03 PM (in response to DGFreeman)
I had the same problem on my iphone after the update. The fix for me was to restore the phone to new from itunes and not restore from backup. Once I did this, wifi worked fine. I spoke with a senior advisor at Apple support regarding the issue and they acknowledged that this is related to the update. I had no issues with wifi or bluetooth prior to the update.
Currently Being ModeratedMar 4, 2013 2:31 PM (in response to beb100)
I tried this on Sunday and it worked for me as well.
A bit annoying, but at least the wifi is working again.
Now I am experiencing extreme lagging performance though
I camt even type a full sentence with my phone without it freezing.