hi, i got a few question about iphone 3gs. i have serached online and cna't find a definite answer. so I thought i would ask. i got a really good deal on ipohone 3gs. so I am thinking of getting it to use on my current ATT plan which has no dat aplan. I understand that if I want to use iphone att requires data plan. HOwever, i don't want that charge and saw that it's possible to block it without incurring any charges. (if someone can confirm and tell me how, i will be appreciated). now, i got another issue is that i found online that if I do not have any data, my voicmail won't work. So does that mean that people cannot leave any voicemail to me? if so, any way aroun dit? another q: what exactly would I be missing if I have no data plan and block it with att? thansk a lot guys.