Yes. Since Project Fi has Google Hangouts integration out of the box, you just need to disable that to get started. Feel free to follow the steps below:
- Open Hangouts on your phone.
- Open settings within the Hangouts app.
- Click the SMS preference.
- Disable the SMS integration within Hangouts.
- Go back to the previous settings screen and open the preference with your email address on it.
- Disable messaging from that settings section.
Some people have mentioned that you may need to restart your device for it to take effect.
If you do not disable the SMS integration in Hangouts, no third-party apps will be able to receive SMS messages on your phone.