Apple iPhone X adopts facial recognition and OLED screen

Apple has revealed a high-end

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smartphone with an "edge-to-edge" screen that has no physical home button.

The iPhone X - which is referred to as "ten" - uses a facial recognition system to recognise its owner rather than a fingerprint-based one.

Apple said FaceID can work in the dark by using 30,000 infra-red dots to check an identity, and was harder to fool than its old TouchID system.

It is Apple's most expensive phone yet.