Actually, we must confess that this is a highly unscientific study determined only by Apple's own site which shows the unlocked yellow variant arriving on September 25th, five days after the arrival of other iPhone 5c colors. Sprint, which first said that the yellow colored mid-ranger might take an extra week to be in buyers' hands, now says it will do what it can to have this model arrive on September 20th.
If having a yellow Apple iPhone 5c is so important to you, the U.S. carriers still show a September 20th delivery date. But if it came down to waiting an extra 5 business days or selecting a different color, what would you choose?
Unlocked yellow Apple iPhone 5c is scheduled to arrive 5 days after other color variants of the mid-range iPhone model
source: Apple via CNET