I am unfortunately having the same problem with dropped wifi (very frequent) on my iPad 3 LTE. My MacBook air and iphone both have strong wifi at the same location and time. It's frustrating because I need to keep using my precious Verizon data so I can stay connected to the internet. My home network is airport extreme- latest version, using WPA). Hoping Apple is working on a fix.
Can anyone help me, my iPhone 3GS and iPad 2 when searching for wifi connections won't find our household dlink router. Whereas non mac products have connected easily! Help!