Windows Phone 8.1 review
Update introduces enhanced notifications, customisation and enterprise features along with the Cortana personal assistant
Nexus 9 review: Android Lollipop deserves better hardware
The Nexus 9 isn't quite able to match the quality of its predecessors
Android 5.0 Lollipop review: Google's sweetest mobile OS?
Google starts rolling out Android Lollipop - but be warned if you're thinking about upgrading older devices
Nokia Lumia 630 review
The sub-£100 device is the first to ship with Windows Phone 8.1. Is it any good?