I have horrible Wi-Fi 8.1 I'm two feet from my router and get "not connected to the network" when I try use the store or Cortana. WiFi icon is all grayed out. All other wireless hardware working fine.
I'm not seeing a complete loss of my WiFi but it is definitely weaker on 8.1 than it was on previous versions. It is also constantly fluctuating up and down.
Yes same here.. on my 925 and the router behind the door of my room, the signal is usually half the strength.. I never had connection or signal problems, but with wp8 it was always to the max.
Yes, I also have same issue, after updating Windows Phone 8.1 on my Lumia 1320 wi-fi signal is very poor and even cant connect from few feet distance to my router.