Apple has yet to reveal pricing for SIM-free handset
Like its black counterpart, which was first made available in June last year, the white smartphone benefits from a Retina display that features super crisp text, images and video, as well as Apple's videocalling function, known as FaceTime.
"The white iPhone 4 has finally arrived and it's beautiful," said Philip Schiller, Apple's senior vice president of Worldwide Product Marketing.
"We appreciate everyone who has waited patiently while we've worked to get every detail right."
Apple has not revealed pricing details for the SIM-free handset.