I own a Xperia ray, with Android version ICS 4.0.4. I've been using a Linksys Cisco WRT120N router for a while now without problem until I had to change SSIDs and passwords because of unauthorized use from neighbors. It is connected to ADSL and to a desktop PC. Since the password change I've been having connectivity problems with the wifi and phone, but it works perfectly for the desktop pc and laptop. Whenever I try to connect to the wifi using my phone, it says "Connected", but doesn't seem to have any internet connection. I have tried the following: Updating my phone (erasing all my data, which is now a waste), followed a LOT of forums (using static IP, updating router firmware, changing wireless security level, MAC filtering, and everything else on which I have no freaking idea about). Nothing seems to work, and is really frustrating because I use my phone for personal business and work, and I really need it to be fixed ASAP. Any help would be greatly appreciated.
PS. I tried connecting to other networks (malls, coffeeshops, neighbors) and it connects perfectly. I'm starting to think that it is my phone that has the problem. I hope not.