[coolsunglasses]

That's for official support. Project Fi worked fine on my iPhone SE.

However, I had problems with Project Fi sending my calls to random other peoples' phones across the country even when I was using my sim in my Nexus so I went back to T-Mobile.

[gaahrdner]

I recall it "working" on other phones, but it's stuck on T-Mobile or Sprint (depending on your phone's hardware), and you lose out on some functionality since it uses specific bands[0]. Plus you still need an approved phone to activate it.

0. http://arkienet.com/2016/03/fi-on-a-non-nexus-phone-is-like-...

[bduerst]

AFAIK, Fi uses both T-Mobile and Sprint if you have a dual band phone, and wifi if you're in a building without reception. Most phones have been dual band for a couple years now.

[praneshp]

Hey, this happened to me. The reason was that one of my older phone numbers was available to Google somehow, and it made that number a backup number to Fi. So when I dropped a call, it made a call to that old number, which is now owned by someone else (A nice lady who even helped my wife debug what was going on.).

[coolsunglasses]

Holy crap I thought I was never going to resolve that mystery!

Thank you!