Steve Jobs, Apple's chief executive officer (CEO), provided details Monday of the new "iPhone 4" at the company's annual Worldwide Developers Conference held in San Francisco.

"We're going to take the biggest leap since the original iPhone," Jobs was quoted as saying by Xinhua.

Less than 10 mm thick, the iPhone 4 is about 24 percent thinner than the previous iPhone 3GS, Jobs said, adding that the new model has a longer battery life that will allow 40 percent more talk time.

The iPhone 4 will go on sale June 24 in five countries including the US, France, Germany, Britain and Japan, and will be available in 18 more countries in July.

The the 16-gigabyte model will cost $199 in the US and the 32-gigabyte model will cost $299, he said.