The AT&T SSID (attwifi) will be broadcast on Soda, Cory, Sutardja Dai,Blum and HMMB starting from Feb 26 around 10:00am, 2013.
Here is the link that you could learn more about AT&T Wi-Fi.
http://ist.berkeley.edu/att/wifi-for-campus
If you would like to report an issue with ‘attwifi”, you could contact with AT&T customer Support at 1-888-888-7520, or email to support@attwifi.com