https://www.techradar.com/news/google-adds-three-more-phones-to-the-project-fi-lineup

Google’s US-only carrier, Project Fi, has added three new phones to its arsenal to give users (current and prospective) some more options. You’ll now be able to pre-order the Moto G6, LG V35 ThinQ and LG G7 ThinQ directly through Google’s online Fi portal.

Formerly limited to Google-made phones due to their unique cellular radios which utilize both CDMA (Sprint) and GSM (T-Mobile and US Cellular), Project Fi has grown considerably in the past year to include third-party options.