Apple expects your iPhone to be replaced after three years

Apple Watch expected to last only three years too, while Mac computers should last four, plus Apple slip-up points to OS X rebranding as MacOS

Apple has said that it expects so-called first owners of 500 iPhones, iPads and Apple Watches to replace them after only three years of use, and Mac computers only four.

As part of the company's new environmental push, which includes its new Apps for Earth campaign with the WWF, Apple has listed how long it expects its products to last for their "first owners" and therefore how much they contribute to the greenhouse gas lifecycle.