Redditor itsallaguesswork discovered a new setting on his Pixel 2 this weekend that allows the selection of a default smart assistant. Most notably, Alexa is one of the new choices. Simply download the Alexa app and select your preference in the appropriate settings menu (depending on your device). Once done, you can invoke Alexa by name or by holding the home button.
This is a small change, but one that could potentially have huge ramifications. Starting today, Alexa has essentially escaped the confines of the living room and can be triggered on a phone without the hassle of diving into an app. It will be interesting to see how many people switch from Google Assistant and Bixby.