Are you frustrated with having to enter your Wifi password everytime on the Nokia Lumia 928? You can try to fix the wifi connection password not being stored issue, by hitting the Forget network. When in WiFi, hit “advanced”, scroll down to your network.
The type of security that your home router has can also affect the Lumia wifi connectivity. The 928 SHOULD connect to any of these: WPA2 (AES/TKIP), WPA, WPA-Personal, WEP, WPA2-Personal, WPA-Enterprise, WPA2-Enterprise, PEAP-MSCHAPv2, EAP-SIM, EAP-AKA.
Windows Phone might have issues connecting to WEP so change your home security password to one that you can choose, and not a generated one. Also make sure your router broadcasts in wireless N,G,B etc. Try selecting channel 1 as your default wireless channel as other channels might receive interference from Microwaves or cordless phones.
You can also try doing a factory reset back to original.