used mav's advice. reset both and then the Wi-Fi symbol replaced the 'E' and all seemed to be good. THEN, as soon as I attempted to use Mail or Safari, it switched right back over to the Edge network...
I even tried using WEP hex (ASCII) and imputing the number on my router...same situation. Came up...i got excited...then back to the 'E'...
I just changed my WEP password to WEP hex or ascii, reboot my router, and voila! it's done.
i did that. then the Wi-Fi symbol came up in replace of the 'E', but as soon as i attempted to use it (go online or check mail), it switched back to Edge...
My husbands was doing the same thing and i just reset the phone. Press down on home key and on/off switch till it gives you the option to turn off the phone. Turn off, wait a couple secs and turn back on. Hope that helps