is jz install activatemms2g in cydia than reboot device and set up mms setting tat all?

after install activatemms2g had appear all mms setting and feature.but when i follow forum provide the digi setting i cant send out mms....
i means is i type all the mms setting in cellular data...after i key in all than press 'network' return out...when i go in view the setting i set the apn ,username ,password this three colum is blank....but proxy colum stil hv the setting...help....

i have no problem on send in and received mms.but i wont let my iphone hv internet network setting...coz after i install ipcc file than i using wifi online somtime wifi disconnect than wil auto using our gprs loh...so this mth my bill come amount is 280++ loh...damn angry...so afraid to hv tat setting....