iPhone Duo: Impressions in Motion

MY Unfolding thoughts on the iPhone Duo.


I’m not a reviewer, but I do have an iPhone Duo. And with everything else going on in life, I haven’t/won’t have the time to really sit down and put together my thoughts on this radical new iPhone from Apple. So I figured I’d document them as I go: a week of unorganized impressions, random observations, and evolving thoughts on the Duo. Enjoy!

My Duo Config: I picked up the 512GB iPhone Duo in Star White, along with the Navy Blue iPhone Duo Folio with Kickstand. I also added the PopSockets Low-Pro Grip for MagSafe Ultra Thin Phone Grip and Stand (what a mouthful).

Disclaimer: This is the first foldable device I’ve owned—or even spent much time with (Nintendo DS excluded). So I’m discovering what it means to use and live with a foldable phone for the very first time, even though it’s already a small but more mature market on the Android side.

Friday, October 23

Long Day: I arrived at the Apple Store at 19:00 after a 10-hour transatlantic flight. By the time I had my Duo in hand, I was somewhere around my 27th hour awake, so all I managed was an unboxing in a jet-lagged haze and the start of setup (I opted for a fresh install).

Crowd: Even at 19:00, the Duo table at my tiny mall Apple Store was packed. Easily 20–30 people were gathered around the Duos in an otherwise thinning-out store. And this wasn’t an “oh, you look like tech people” crowd. It was regular-looking people of all ages, notably skewing female, playing with the demo units. There seems to be a palpable excitement for this iPhone that extends beyond the tech community, something I didn’t see when I visited an Apple Store for the Vision Pro launch.

Saturday, October 24

Since I passed out the night before, Saturday was the day I really got a chance to really setup and play with the device for any length of time. Here are some of my observations from Saturday:

Heat: The Duo gets hot. I’m coming from an iPhone 17 Pro Max, which handles heat dramatically better. But even compared to the iPhone Air, which also gets really hot, the Duo’s smaller size means you’re in contact with the hottest parts of the device far more often, especially when it’s folded.

Folio with Kickstand: Generally, I’m very bullish on the folio case. It’s light, and I like that it protects the front display and hinge of the Duo. My main gripe is the price, $129 is way too much. Kickstand is really thin and well integrated into the back - it’s held down magnetically and requires a tiny bit of pressure to lift from the case, creating a simple stand whether the Duo is open or closed.

Oh, and the folio cover locks the iPhone when you close it. Without the cover, you have to lock it manually after folding it shut, though there are shortcuts to change that behaviour.

iPhone Duo Case: I passed on this one because I wanted hinge protection and the flexibility to switch cases. The polycarbonate cases use adhesive to stay attached, so I imagine they aren’t designed to be taken on and off regularly.

Outer Display: Honestly adorable. I love how compact the display is, but usability takes a pretty big hit. As much as I want to use the Duo closed, the screen feels too crowded to get things done comfortably. For most tasks, it feels like I’m forcing the issue, with the phone constantly nudging me to unfold it. Basic tasks like checking the weather, finding a podcast, or viewing the calendar all work fine. But anything that requires text input cuts the usable display in half, leaving only a few visible lines above the keyboard. Using the smallest text size helps, but the larger you need the text to be, the more cramped the outer display will feel.

Currently, I’d say I’m using the outer display about 65% of the time, baptism by fire, as I’m really trying to force myself to get used to it.

Chonky: The iPhone Duo feels heavy, especially when folded. Packing that weight into such a compact form makes it feel much heavier than the 17 or 18 Pro Max, even though it weighs just 5 grams more than the latter. Still, it’s Apple’s heaviest iPhone at 254 grams (8.96 ounces).

Folding: As someone with no experience with foldables, folding the Duo feels abhorrent, an affront to the laws of nature. I’m only 50–60 folds in, but I’m still internally screaming every time I open or close it. The hinge is very smooth, though it takes more force to open/close the Duo than I expected. But that resistance lets me precisely adjust the angle without it feeling loose or like it’s about to snap into place.

Sunday, October 25

Winter Phone: We just got our first snowfall, and I’m beginning to wonder how the Duo will handle winter. Touch ID is DOA with gloves, so Apple Watch unlocking will be a necessity. I’m also curious how the folding screen and adhesives will tolerate temperatures of −10, −20, or −30°C. Cold can make foldable displays more brittle, increasing the risk of cracking. Apple’s website lists the same operating ambient temperature range for the Duo as the iPhone 18 Pro: 0° to 35°C (32° to 95°F). Personally, I’ll be extra cautious about taking the Duo out in below-freezing temperatures and keeping my use brief when I do.

Crackgate: I would be remiss if I didn’t address “Crackgate”: reports from some users that their iPhone Duo resists being opened, something snaps, and a distinctive glowing line of damaged pixels appears across the lower portion of the display. God knows how many cases there are, or will be, and the internet is certainly amplifying the issue right now, but reports suggest it tends to happen within the first few hours of use.

It doesn’t seem to come down to how many times you fold the device. Reviewers have already gone ape, folding and unfolding their Duos tens of thousands of times to see how they hold up. Given that the damage appears in the same spot on affected devices, and so soon after people begin using them, the pattern seems to point to some kind of material defect.

What we don’t yet know is how widespread this actually is. I’ve seen maybe 30–40 reports across Reddit and TikTok, out of what I’d guess is a million or two Duos sold this weekend. Obviously, I’m guessing on sales, and counting social media posts isn’t going to give us an actual failure rate. So far, the number of reports I’ve seen is small, but it’s too early to know if it’ll stay that way.

Don’t get me wrong, this is concerning. Something is clearly going wrong with some of these devices, and it definitely has me anxious about my own Duo. But figuring out how big an issue this is will take time. Last year, there was a whole uproar over iPhone 17 Pro durability that fizzled out within a week. That doesn’t mean this will play out the same way, but how loud the internet gets about something doesn’t necessarily tell us how common it is.

At least reports seem to suggest Apple is being very accommodating to returns, with several users quickly getting a replacement device on site when visiting the Apple Store.

Matte Display: This is the first Apple product I’ve owned with a nano-texture display, and I really like how it feels. “Grippy” probably isn’t the right word, but there’s something about the matte finish that makes my taps and swipes feel more precise than they do on slippery glass. Apple used this finish to help disguise the foldable’s crease, and the results are pretty impressive. From normal viewing angles, I can’t see it at all, though I can still feel it when I slide my finger across it. The texture also does a great job of diffusing glare, making the display really nice to use in sunlight. The tradeoff, of course, is slightly more muted colours on the inner display. They just don’t have the same richness and punch as they do on regular glass. On another device, you’d probably stop noticing after a while, but because you’re constantly switching between the inner and outer displays, the difference is harder to ignore.

More to come soon…

Still want to write about

  • TouchID

  • Using the device (as a lefty)

  • Standby

  • Build Quality

  • Cameras

  • Apps

  • UI Changes

  • Sound

  • Daily Use


Last Edited: Sunday, October 25

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