Nexus 6 supports tap-to-wake, but Google disabled the feature before launching the handset16
Weird enough, the Nexus 6 initially had the tap-to-wake feature, but Google decided to remove it. The feature (and the fact that it’s been disabled) was discovered in a code commit that can be seen on Google’s website at the source link below. While there’s no official word on why Google removed the feature, this may have something to do with the fact that the Nexus 6 comes with an “Ambient Display” - the equivalent of Motorola Moto X’s active display.
With or without some of the features that you’d wish to see, the Nexus 6 was released by Google in the US last week, and it’s coming soon to other markets. To find out more about the brand new handset - the largest Nexus smartphone ever, and the most expensive in recent years - you should check out our Nexus 6 review.
source: Google via Android Police