Recently I bought an iPhone with AT&T network. It was really a dream come true for me to have an iPhone. But really it came for me as a shock that the 3G data plan for AT&T 3G plans for iPhone were none less than $200. Are there any affordable plans in AT&T 3G plans for iPhone? I have a monthly budget of $100 maximum to spend on the data plans. Is there anything within that budget? Can anyone suggest me with some affordable 3G plans for my iPhone?