By Paul Hayes

SAN FRANCISCO, US: Demand for Apple’s new iPhone 4 has proved so great that the company has failed to cope.

According to Apple, the company and its carriers have logged more than 600,000 per-orders for the newly released iPhone, causing many computer ordering and approval systems to malfunction.

The malfunctions have meant that many customers have either been turned away from ordering or have abandoned the process altogether due to frustration.

“We apologise to everyone who encountered difficulties, and hope that they will try again or visit an Apple or carrier store once the iPhone 4 is in stock,” said Apple in a statement.

The massive number of pre-orders was the largest that Apple has ever received in a single day and many customers are expected to have to wait several weeks to get their new device.

The iPhone 4 will be available in Australia at the end of July.