Unlike Nexus, it wasn't limited to one particular smartphone manufacturer. (techpp.com)
A dedicated app, compatible with Android and iOS devices, will allow you to track activity and sleep, as well as set the watch to vibrate or move the hands to a certain position for particular smartphone notifications. (pocket-lint.com)
Cell phones, in particular smartphones, have become the go - to tool for crowdsourced data studies. (treehugger.com)