Kerry Wan/ZDNETOn Wednesday at its Unpacked event in London, Samsung revealed the Galaxy Z Fold 8, its latest flagship foldable device, alongside the Z Fold 8 Ultra and Z Flip 8. If you have a phone to trade in, AT&T will give you up to $1,900 off the new Fold 8 -- paying the full price of the new phone. The Z Fold 8 weighs just 201 grams, making it the lightest Z Fold yet -- about the size of a passport. The cover screen has a 10:16 aspect ratio, designed for messaging, social updates, and quicker actions, while the unfolded main display has a 4:3 ratio for watching videos and gaming.Also: Everything announced at Samsung Unpacked 2026: New foldables, smartwatches, moreAs is the case with carrier deals, this AT&T deal has some caveats to note. For one, your trade-in device needs to be worth at least $290 to be eligible. You'll also need to sign up for an AT&T Premium 2.0 plan or higher, starting at $100 per month plus taxes and fees. You'll be paid back the $1,900 in bill credits over the course of 36 months. If you cancel your service, the credits will stop, and you'll need to pay the remaining balance on the device. Paying off the device early may also stop the credits.Also: I tried Samsung's new wide Galaxy Z Fold 8, and it's my favorite product of Unpacked 2026If you're interested in signing up for AT&T and getting the new Fold 8, this is a deal we'd recommend.How I rated this deal This is a solid carrier deal for a brand-new phone. Even with the caveats, I'm giving it a 4/5 editor's deal rating. We expect this deal to last at least through the preorder window for the Galaxy Z Fold 8. Deals are subject to sell out or expire at any time, though ZDNET remains committed to finding, sharing, and updating the best product deals so you can score the best savings. Our team of experts regularly checks in on the deals we share to ensure they are still live and obtainable. We're sorry if you've missed out on this deal, but don't fret -- we're constantly finding new chances to save and sharing them with you at ZDNET.com.