Currently Being ModeratedNov 24, 2012 5:33 PM (in response to Ichinisan)
Call the provider and make sure that tethering is provisioned on your account. Also, see: http://support.apple.com/kb/TS2756
Currently Being ModeratedNov 26, 2012 2:40 PM (in response to Ichinisan)
I had the same problem for the last 2 weeks and today it just started working with nothing changing. I've also read reports of others having it just start working today. Give it a shot again. I think it was a problem that AT&T sorted out.