Filed under: CellphonesWe're not sure what took 'em so long -- reports of unhappy customers who traveled abroad with their surreptitiously email-checking iPhones returning home to bills totaling in the thousands of dollars -- have been de rigueur for AT&T since June's launch. Well, today that changes. Despite Apple's addition of an anti-data-roaming option in later firmware updates, the service side now has a new Data Global Plan, which, for $25 or $60 (extra) per month, gives iPhone users 20MB or 50MB of international data access -- but nothing more on the voice side -- in some 29 countries (including our neighbor to the north, and parts of Europe and Asia). Take that SIM unlockers who would rather just but an overseas SIM and pay something reasonable for their data rates.