For those of you that have the wi-fi issues, here is a thought. Have you updated to 8.1 OTA or by restoring and setting up the phone as new?
I have read a some people have seen this fixed after they restored their devices and set them up as new (and not by restoring a backup).
I have read a some people have seen this fixed after they restored their devices and set them up as new (and not by restoring a backup).