The Nexus 6 is a phablet co-developed by Google and Motorola Mobility that runs the Android operating system. It is the successor to the Nexus 5 and the sixth smartphone in the Google Nexus series, a family of Android consumer devices marketed by Google and built by an original equipment manufacturer partner. The Nexus 6 and the HTC Nexus 9 served as the launch devices for Android 5.0 Lollipop.