Enter the following settings.
Name: ConsumerCellular
APN: att.mvno
Proxy : 66.209.11.32
Port: 80
Username: <Not set>
Password: <Not set>
Server: http://mmsc.cingular.com
MMSC: http://mmsc.cingular.com
MMS proxy: 66.209.11.32
MMS port: 80
MCC: 310
MNC: 410
IP Version: IPV4
Auth type: PAP or CHAP...