Does it require a special phone plan?
Yes. There are two options. New or existing AT&T customers can subscribe to a special iPhone plan, which is available in individual and family (multiline) versions. Individual plans start at $59.99 per month with 450 voice minutes, unlimited data, 200 SMS text messages, and 5000 nights & weekends minutes. There is a one-time activation fee of $36. Family plans start at $80 for one line with 700 shared minutes, and additional iPhone lines are $29.99 each. All plans include unlimited calling to other AT&T mobile phones, and Rollover® Minutes. Existing AT&T customers can add iPhone service to their existing plan for $20 per month per iPhone line.