IOS 13.3 iMessage activation fails on google fi

The "Beta" guy makes me laugh.

The issue with iOS 13.3 is specifically related to re-activating iMessage and Facetime. If iMessage is working prior to the upgrade to 13.3, chances are good it will work afterwards too. Should you pull your SIM or turn off iMessage, you won't be able to activate it again. During the attempt you will get weird texts from Fi that you should never see. I am told these texts are as a result of some kind of registration handshake error. In my case, my 11Pro Max worked flawlessly with iMessage for a month prior to 13.3. In fact, I have Verizon in the eSIM and Fi in the physical slot. Both numbers were activated for iMessage. I have tested iMessage activation with Fi on my 11, an XS and an 8 Plus. Same results.

Both Google and Apple are clueless on the errors. I have spoken to level 2 for both. I suspect the "fix" needs to come from Google and not Apple (13.3 still activates just fine with my AT&T and Verizon SIMS in the same phones). It will probably take more people experiencing the problem and complaining/posting before Google wakes up.

Downgrading might be an option, but I have read on other sites that success is hit or miss and you might lose data. I also hate for people to miss out on the latest bug fixes and security updates. Sometimes that is worse.

We all need to keep contacting Google and following up!

Again, Google says that Google Fi with an iPhone is in beta. Any time you are using beta versions of hardware or software there are going to be problems. That's why it's in beta and hasn't been fully released. I mean they make you change your text settings to send texts to non-iPhones and you may need to do that with every iOS release. Sure, someone else may have Google Fi on their iPhone in these communities but I'm just letting you know that this lies with Google and not Apple since you stated in your original message that Apple Support hasn't been able to help. As of now, no one else has replied.

well, your comment wasn't helpful to the discussion and was dismissive of the poster. The fact is, regardless of Fi's "beta" status, the gentleman's question was and still is relevant to other Apple users who use Google Fi as a carrier. You seem to also be conflating an Apple beta that might be fraught with bugs and problems (like iOS 13) with what Google refers to as it's Fi "iPhone beta". The reason Fi requires iPhone tweaked cellular data network settings has nothing to do with the Apple hardware per se or the "beta" tag, but rather the advanced nature of Fi's carrier switching technology.

As of today the issue is fixed! You should be able to activate iMessage without issue now using Google Fi SIM.

I just activated! ... after a week of it absolutely not working and getting the weird registration SMS texts it just clicked and I have my check mark.

Let's hope we don't "get broke" again when 13.3.1 hits in a couple weeks.

Does your cellular service support international SMS? That's required to activate iMessage (and FaceTime).

Google Fi for iPhones is in beta. Apple doesn't support anything on their network so you'll need to work strictly with Google Fi on the issue.

What is funny about Google specifically stating that using Google Fi with an iPhone is in beta?

No one’s comments thus far are helpful. I wasn’t dismissive of the poster but simply said this is Google’s issue to fix and factually stated that using an iPhone on Google Fi is in beta.

iMessage is now working on my iPhone running 13.3. It appears this issue has been fixed