Apple’s latest generation iPhone will become available starting this Friday in more than a dozen additional countries, including New Zealand.

The culture-shifting company has sold more than three million of the smartphones since it was launched a month ago in France, Britain, Germany, Japan, and the United States.

iPhone 4 sales will expand on July 30 to Australia, Austria, Belgium, Canada, Denmark, Finland, Hong Kong, Ireland, Italy, Luxembourg, Netherlands, Norway, New Zealand, Singapore, Spain, Sweden and Switzerland.

The iPhone 4 16GB will sell outright for $1099 in New Zealand, and 8GB versions of its 3GS predecessor will drop to $899.

Vodafone had no comment on any details of the device’s release or applicable data plans when contacted this morning.

Apple last week began doling out iPhone 4 bumpers to address concerns that touching certain parts of the handset chokes telecom signal strength.

In true Apple style, free bumpers were made available through an application that could be downloaded to iPhones from the Cupertino, California-company’s online iTunes shop.

The gadget-maker is hoping a US$29 rubber-and-plastic case will put an end to the debate over the antenna on what Apple chief executive Steve Jobs calls “perhaps the best product we’ve ever made.”

Apple said at its website that the bumper, which fits around the sides of the phone, will be free to all buyers of the iPhone 4 through the end of September.

The phone 4 also boasts a 5 megapixel camera with LED flash, HD 720p video recording capabilities, Apple’s gruntier A4 processor and longer battery life.