Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8F190 Safari/6533.18.5)
I thought this was the case only if you signed up for a contract? Pretty sure I read this last week
Edit found it
"Get one FREE month of 2GB data*
when you sign for 2GB DataConnect Personal Plan for iPad!
*Service free for first 30 days. Maximum $25 credit, which could span two bill cycles.
Overage rates apply for any usage over 2GB in a bill cycle."
Via
http://www.att.com/shop/wireless/devices/ipad.jsp