Apple Watch OS2 review: more app potential but killer feature still missing

Smartwatch update brings forth improved Siri, added widgets, more watchfaces and good nightstand mode, but still lacks consistency and does nothing for battery life

Apple has updated the operating system of its first smartwatch with native apps, added complications and a few interface tweaks.

On the face of it, watchOS 2 changes very little. Fundamentally the Apple Watch looks, behaves and lasts as long as it did when it launched.