iPhone Duo Beats iPhone Air as Apple's Thinnest iPhone, But Only When Open - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

iPhone Duo Beats iPhone Air as Apple's Thinnest iPhone, But Only When Open

The new foldable iPhone Duo is the "thinnest iPhone ever," according to Apple. When unfolded, the device is 5.2mm thick, making it 0.4mm thinner than the 5.6mm iPhone Air.

iphone duo side
Rumors suggested it could be as thin as 4.5mm when unfolded, similar to Samsung's Galaxy Z Fold8, but it didn't end up that thin. At 5.2mm, it's just a little bit thicker than the 5.1mm 13-inch iPad Pro, which is Apple's thinnest device.

When folded, the ‌iPhone Duo‌ is 11.3mm thick. For comparison, the iPhone 17 Pro Max and iPhone 18 Pro Max are both 8.75mm thick.

The ‌iPhone Duo‌ is also Apple's heaviest iPhone to date at 254 grams, which is five grams heavier than the 249-gram ‌iPhone 18 Pro‌ Max. It has a 7.6-inch inner display when it's open and a 5.4-inch outer display when it's closed, and it has a short, wide design.

Pre-orders for the ‌iPhone Duo‌ begin on October 16 ahead of an October 23 launch date.

Related Roundups: iPhone Air, iPhone Duo
Related Forum: iPhone

Popular Stories

iphone duo

Apple Announces Foldable 'iPhone Duo'

Wednesday September 9, 2026 10:56 am PDT by
Apple today announced the "iPhone Duo," a new kind of iPhone featuring two screens and a foldable inner display. The two halves of the iPhone Duo connect into a single continuous frame with the same aspect ratio across both displays, and Apple said the transition between open and closed is designed to feel fluid. When fully open, Apple says it is the thinnest iPhone ever made, with an...
Surprise and Shine Live Coverage Article

Apple Event Live Blog: iPhone Duo, iPhone 18 Pro, and More

Wednesday September 9, 2026 9:10 am PDT by
Apple's "Surprise and Shine" event kicks off today at 10:00 a.m. Pacific Time, where we're expecting to see the foldable iPhone Duo, the iPhone 18 Pro and Pro Max, Apple Watch Series 12 and Ultra 4 models, new AirPods 5 earphones, and perhaps some other announcements. Apple is providing a live video stream on its website, on YouTube, and in the company's TV app across various platforms. We...
iOS 27 Feature Dark

Apple Announces iOS 27 Release Date

Wednesday September 9, 2026 10:46 am PDT by
At its event today unveiling the iPhone 18 Pro, AirPods 5, Apple Watch Series 12, and more, Apple announced that iOS 27 will be released later this month. iOS 27 has already been available as a developer beta since June and as a public beta since July, and Apple today said that the update will be released for all users with a compatible iPhone model on Monday, September 14. iOS 27 is...

Top Rated Comments

1 week ago
When open it's not a phone. It's an awkward tablet with a crease. When it's closed, it's thicker, wider then a pro max, and overall smaller in terms of display than either of the current pro phones...and with an odd shape. I fail to see how this is not the worst of both worlds. Functionally compromised against either individual Phone and iPad. I suppose if you really want an all in one, but at what usage penalty, and at what cost. Not seeing this at all.
Score: 11 Votes (Like | Disagree)
1 week ago

The Air as a standalone was just an inferior phone that did nothing for any particular demographic. They tried to sell it to female influencer - their first three spots were ONLY about that - but influencers want a good camera and a lot of texting and battery, and the Air is not that. I think the Air was just a paid for field test, but it was a lousy phone.
I still love mine after a year of ownership. Cool opinion, though!
Score: 11 Votes (Like | Disagree)
carrrrrlos Avatar
1 week ago
But it’s not their thinnest phone. Are we just regurgitating “facts” here to keep our media pass?

i added “air quotes” in my edit
Score: 11 Votes (Like | Disagree)
desertfool Avatar
1 week ago
I just wanted a new mini. I don't want a huge phone. Disappointed again.
Score: 8 Votes (Like | Disagree)
actcyclist Avatar
1 week ago
The DUO is 254g heavy and if you add a case, about 320g. Thats more important than technically how thick it is when unfolded
Score: 8 Votes (Like | Disagree)
1 week ago

Did you even read the article. "Thinnest iPhone" not phone
They clearly said "their thinnest phone". Who did you think "their" was referring to?
Score: 7 Votes (Like | Disagree)