Google's Project Fi now covers 170 countries with international data
 

Project Fi's same-as-at-home international data is now decidedly more useful -- including before you've even left. The Google-run carrier has expanded its travel coverage from "over 135" countries to 170, including nations like Belize, Monaco, Nigeri...

https://www.engadget.com/2018/02/15/...170-countries/