i'm using a 8820 and i encounter difficulties to browse the web at home when connected to Wifi.
The wifi icon is solid black the network name is displayed next to my carrier one, but when i want to open websites, most of time i have a message telling: unable to find requested server. Other times it works.
I'm sure it's coming from my router because when i'm connected to public hotspots it works very well.
Do you have an idea?
Try rebooting router if have not already. also try removing security if any and deleting profile in phone and recreating. What router as some do have issues with the phones. make sure your browser is set to wifi browser