Gophone . $65 plan .internet .Need Help ! THX !

[tomashan42]

i got a iphone before and i want to use internet on GOPHONE ATT.
and before i use a $25 plans (250mints) and buy one date pack form the AT&T Gophone . and go to Unlockit.co.nz . choose a AT&T . and then the internet is working .

but today i saw a new rate plan on the Gophone
、
$65 unlimit talk .mes and 1 GB date .. that is fascinate to me and i go ATT company and change it . but the internet is no more working .
what is going on ? the problem is about the plan or IOS 6.0 system ?

have a any stronger to help me ? thanks for your help !!
online wating . : tomashan42@gmail.com