I'm no fan of AT&T, don't own an iPhone, and am a customer of T-Mobile. However, I am an accountant, and some of you are completely lacking in any understanding of business.
Oh it's worse than this for me. Not sure where you came up with $70. With a 700 minute/month plan, I pay:
iPhone 1: $60.00 voice + $30.00 data + $5.00 for 200 SMS txts + tax
iPhone 2: $9.99 voice (family talk) + $30.00 data + $5.00 for 200 SMS txts + tax
That's about $140/month x 24 months = $3360.00 + tax!
Yup ... I'm thinking I've paid for those phones pretty quick. The rest obviously goes to AT&T to "improve infrastructure" and "pay employees", and "pay for retarded TV ads".
Per their 2008 Annual Report, AT&T spent $18,078,000,000 on wireless service & equipment in 2008, which was an increase of over $2 billion compared to the prior year. Virtually all of the increase was equipment, not increased service costs. (which could theoretically be something to complain about if they raised their service rates) In large part due to more and more expensive phones being purchased, like the iPhone 3G.
How much did you spend on your equipment again?
I guess, maybe, they need to charge customers something. Let's see, they went from 70 mil to 77 mil customers, or an average of over $500 per customer for the year in total expense. (total expense was $38 bil) So that means they have to charge you at least $42/line/month just to break even. You have chosen the most expensive line with those iPhone data charges since you WANT IT. Others will spend less.
And please don't forget that a whole bunch of your monthly cost goes straight to someone else. aka, the United States of America and other govt-types. That complaining no doubt belongs in a different thread.