I'm planning on buying an 8gb iphone. I am already a customer for At&t and want to know a few things. 1) can i put my old sim card into the iphone and still use it? 2) How much will i pay for a new 8gb iphone with no contract? 3) will i have to pay more per month than what i'm paying now? 4) if you have an iphone, is it worth it?
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