If it goes through as an actual Facetime call, then you aren't charged for it.

That said, it can easily fail to go through as a Facetime call and instead connect as a cellular call (either over the cell network or over wifi via Wifi Calling[1] if you have that enabled). If you then add Facetime video to the call, I'm not really sure if the cellular audio call stays active while the FT video goes through data, or if the whole thing transitions to a data call over FT.

That said, the ATT Forums are loaded with posts of this happening to people. Easiest way to prevent it is to just go into your account settings and disable outbound international calls. I'm not sure if they have the equivalent of [2] option in their wireless account portal (the link is for their landline service), but if not you can have customer service do it manually. That way you explicitly prevent your phone from establishing a true international call via AT&T's network (whether via cell service or Wifi Calling).

[1] https://www.att.com/support/article/wireless/KM1063258

[2] https://www.att.com/support/article/u-verse-voice/KM1010583

It sounds like you have Wi-Fi Assist turned on, which does exactly what you describe. To quote what it says in my settings tab - "Automatically use mobile data when Wi-Fi connectivity is poor".

To turn it off, on your iPhone, go to:

Settings > Mobile Data > Scroll to the very bottom > Toggle off Wi-Fi Assist.

Yes but data is data, it doesn't matter if I use 3G/4G/5G to talk to a server down the street or across the world, I've never heard of (consumer) bandwidth billing like this.

Yes this should just be a domestic data charge, of which I am an unlimited plan holder.

I made the call via FaceTime.

FaceTime is over Internet. If AT&T is charging you for "international data", then please redact personal information and put your bill on the Internet. That would be absolutely crazy.

I Will. I have the rep saying in writing this is what they do.

They also put up no resistance when I asked for a refund for $600.

And everywhere I look I see FaceTime is free for international calling.

How would they know it's an international call unless Apple/FaceTime would leek metadata (like number you're calling) to AT&T?

Sure they could see that the IP you are connecting to is in Africa, but if you call a US number on a regular phone and that person happens to be in Africa you will still get charged like it's a call within the US (the one out traveling will get the extra charge). Since how would you know that person is out traveling? So how could AT&T know you're not calling a US number?

I have no idea.

Just relaying what they said to me.

I feel like we/you have to be missing something here. I've never heard of international data charges (in this context, traveling/roaming yes but never from US -> Elsewhere). FaceTime is just data, at worst you burned some cell data but it shouldn't matter if you are talking to a server down the street or across the world. You are sure you weren't just being charged for the data at a regular rate? If you can post a screenshot of the bill and if it says something like "International data" or similar that would help.

Please remove your personal information and share a screenshot of that bill. That is the kind of thing that needs to go viral online so AT&T can be shamed. I've never heard of such a thing but they are a telecom, it doesn't surprise me.

This post needs a ton of evidence, considering there is no such thing as a domestic or international FaceTime call.

If you Google “international FaceTime call” you will see a lot of entries including ones on Apple and AT&T.

What I mean in this context is that I called someone in SA from the US via FaceTime and I was billed as if I made an international voice cellular call.

Everything I’ve read says this isn’t supposed to be a thing, and the rep refunded me, but then also said to “manage future expectations” that AT&T will detect international FaceTime calls, and bill you for them (this is in writing in the notes, she did send me a less than perfect text, and I can dig out the bill and put together a notion post about it).

I would not expect customer service representatives to be knowledgeable about the workings of the system, especially the lower level ones.

If you opened FaceTime app, and chose video or audio call your contact, then I see no technical reason how ATT would even know where the data for your FaceTime audio/video call is going. ATT should have no information other than you are using FaceTime, and if you are on decent WiFi, I do not see why ATT would even have that if the iPhone did not need to send the data over ATT’s network.

The only way I can think of a glitch occurring is if you opened the Phone app in iOS, then placed a phone call to a South African phone number, and then switched that phone call into a FaceTime but subsequently pressing the Facetime option while in the phone call, and for whatever reason ATT did not get the message to drop the phone call and kept it running simultaneously with Facetime. That is the only way I can think of that ATT would know who or where you called at all.

Unclear but this is what the official explanation from the rep was, from her superior.

>"the wifi is slow”, AT&T will shift to data and they will detect it’s an international call and bill you as if it’s a regular international cell call.

There is an option in iOS called 'Wi-Fi Assist' (Settings > Cellular > (Scroll to the bottom) > Wi-Fi Assist). It will, "automatically use cellular data when Wi-Fi connectivity is poor."

Make sure that's disabled. It should also show you how much you've used (mine is showing 522MB).

Even so shouldn't this then just be like watching Netflix or doing a zoom call? Ie, it’s just my unlimited data plan.

Them “detecting” it’s FaceTime and then billing for an international call seems sus.

Can you post a redacted copy of your detailed bill line item?

You can widen your location on bumble? How did you match with person in South Africa?

Good to see someone asking the important questions :)

Excellent question.

So I was driving across the country in MajikBus.co and stopped through NM.

Happened to match with a lady who had been there this fall and was planning to move back.

It was very serendipitous.

We had a lot of FaceTime calls for a month and then met up when she flew back.

But FaceTime is always meant to be free for international calls. If both parties have an iPhone, it’s just an internet data useage.

Them charging me for where the data packets end up is nuts. Imagine if they did that for any other web based service.

I’m not advocating for the carriers, and share the disgust.

Remember that wireless carriers have more leeway with discriminating against certain traffic than wireline. They probably do it to cement those rights.