If you're using Project Fi, this past week you may have noticed incoming calls no longer forwarding to your non-Fi phones as you had previously set up. Don't worry, you're not alone — but thankfully this isn't call forwarding being "down" as much as it's an unintentional wiping out of your call forwarding settings.
Starting in the past week or so some Project Fi users saw their accounts completely wipe out all previously-added forwarding phone numbers — both those added from Project Fi and held over from Google Voice. So when someone called your Project Fi phone number, only your Fi phone would ring, not any other number previously attached to your account.
After reaching out to Google for some clarity on the issue, a spokesperson informed us that this is indeed a known bug with the call forwarding system, but the Project Fi team is currently looking into a fix.
It's annoying for sure, but thankfully you can just add all of your forwarding numbers back in via the Project Fi app or website to get your incoming calls on multiple devices again. In the app you just scroll down to the bottom of the main screen and tap "Call forwarding," and you'll find the same on the website. In either case you just enter the phone number you want calls to forward to, and then confirm the forwarding with a quick automated call to that number.