charged extra on my bill for data? ok so i have a samsung mythic with unlimited texting and unlimited web and shared minutes with my family.....if i put my sim card from my mythic into the iphone i have would i get charged extra or anything for texting and web usage since doesnt the iphone have a mandatory data plan you have to get when you buy it??
also if i do put my sim card in it what would happen? would i be able to have unlimited text and call and just be able to use wifi for internet instead of 3g service?