Overview: Apple has a simple way to check whether your iPhone is new, refurbished, or replaced; all you need is its model ...
HowToGeek on MSN
How to Check if Your iPhone Was Refurbished
Find your iPhone's model number in the Settings app. If it starts with an F, it was refurbished by Apple or a carrier.
An iPhone may look perfect on the outside, but how do you know if it is new, refurbished, or a replacement unit?
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