As previously reported by u/svokric - ATT is launching backup internet for those on unlimited plans at no charger more here: https://about.att.com/story/2024/internet-backup-for-consumers.html
note - you’ll need a BGW320 gateway and it needs to be in 6.28.X firmware
That’s pretty cool 
I guess if it’s truly no added cost it must also be unlimited.
Damn, would be cool but ain’t no way I’m using the built in WiFi of the BGW….
I use the WAS-110 PON on a stick right now so my BGW isn’t even powered on. I might consider using it if it had actual cellular backup built in to the gateway.
Meanwhile, abandoned copper customers get only overpriced deprioritized FWA.
(To add insult to injury, y’all overbuilt fiber in Frontier.)
Any idea if ATT will facilitate a router upgrade for free? Anyone attempted? Still on a BGW210-700
This would be great if I actually got cell signal in our house. I can’t get any reception until I leave about a half mile. I need to really reach out to support.
Our cell towers feed of the same fiber line, so we lose both when the fiber goes out…
So, it just turns on your phone’s hotspot 
So this is why fiber internet went up $5/month.
So if I don’t have the latest gateway, I’m screwed?
That’s pretty interesting, especially since it’s free. I would have expected AT&T to charge for such a feature.
I worry about major fiber cuts though and it’s why I try to use a different carrier for a backup ISP. Problem is, most carriers use one provider for fiber, and in my area, that’s AT&T. Luckily, this hasn’t been an issue and I hope to never find out.
OK, that’s a neat idea, but when my fiber goes out, it’s usually coupled with AT&T cellular going out too.
But given that it uses your phone, I’m guessing that’s a Bluetooth connection, which explains the 5th 2.4GHz antenna inside the BGW320.
Nice for AT&T to include this for free. Unfortunately for me AT&T is weak in my neighborhood, so it wouldn’t really help me. The good thing is I’ve never had a fiber outage in the four years that I’ve had it. knock on wood
I ended up getting Ubiquity. Loud gateway max and also got comcast xfinity 1 GB. I already have ATT fiber. I will be setting up my cloud gateway to load balance the two 1 GB connections. My wife and I work from home, kids need internet for school so I took this drastic and expensive step. In 2 years my Comcast low rate will be go up and I will take a look at other options. I also considered T Mobile internet but it was not good enough for gaming or work VPN
I broke my fiber cable running to the modem this week and yesterday got a webpage explaining how to setup the backup through Smart Home Manager. Unfortunately, I didn’t have the option/tab in the app that the instructions said I should have. Maybe I’ll disconnect the new cable later and try again.
I’m sure it’ll suck just like every thing else att does
Too bad my AT&T cell service at home is basically non-existent.
Good idea, but I’m not giving up my gateway bypass. Just let me have unlimited tethering when my connection is down.
This is also my setup. I doubt it’s even worth it as my fiber has been off like once or twice in 4yrs
Did this yesterday in about 10 minutes. Requested the 320 via chat and they sent it to me. It should be arriving tomorrow via FedEx. Doesn’t require a tech visit.