iPhone Duo Setup Guide: 12 Settings to Change First

GuideSat 24 Oct 2026, 21:30 AST (18:30 UTC)

Apple's first foldable iPhone went on sale on Friday, and the first owners are now discovering that the iPhone Duo does not behave quite like the iPhone they are used to. There is no Face ID, no Action button and no Ring/Silent switch, the SIM is eSIM only, and the big inner screen needs more care than any iPhone before it. Mentions of the "iPhone Duo" on X have passed 90,000 a day since launch, and "آيفون ديو" is on Google's trending searches list in Saudi Arabia. If you have just unboxed one, or are about to, these are the settings to change first, step by step.

Key points

The iPhone Duo launched on 23 October 2026 from $1,999 for 256GB, with 512GB, 1TB and 2TB options, according to Apple's announcement.
It unlocks with Touch ID in the side button, so registering extra fingers is one of the most useful setup steps.
Silent mode and your old Action button shortcut now live in Control Center and on the Lock Screen.
Do not peel the inner screen's cover layer or fit a third-party protector, and decide on AppleCare+ within 60 days.

What makes the iPhone Duo different

On Apple's iPhone Duo page, the phone opens into a 7.6-inch inner display and closes to a 5.4-inch outer display (7.58 and 5.36 inches measured as rectangles). It runs on the A20 Pro chip, has a titanium frame, an IP68 rating to 6 metres for 30 minutes, MagSafe and Qi2 charging at up to 25W, and a dual battery that Apple rates at up to 31 hours of video playback on the inner screen and 44 hours on the outer one. Three changes matter most on day one: Touch ID replaces Face ID, there is no Action button or Ring/Silent switch, and the phone is eSIM only worldwide.

1. Update iOS before you restore your data

Tech Between the Lines recommends installing the newer iOS 27.1 build offered during setup, before restoring a backup, so your apps and settings land on the latest software. If you skipped it, go to Settings > General > Software Update now. The same outlet reports that iOS 27.2 is expected next week, so check again in a few days.

2. Register more fingerprints for Touch ID

Because the sensor sits in the side button, the finger that reaches it changes depending on whether the phone is folded or open and which way you rotate it. Setup asks for only one finger. The Verge suggests enrolling several, including a finger on your other hand for when the inner screen is turned sideways. Go to Settings > Touch ID & Passcode > Add a Fingerprint. On the same screen you can choose whether Rest Finger to Open takes you straight to the Home Screen (the switch is also under Settings > Accessibility > Side Button), and turn on Unlock with Apple Watch if you wear one, which helps when the phone is lying open on a desk.

3. Put Silent mode back within reach

The Duo is the first iPhone with neither a Ring/Silent switch nor an Action button. To silence it, swipe down from the top-right corner to open Control Center, tap +, choose Add a Control and pick Silent Mode, then drag it where your thumb can reach, as Tech Between the Lines explains. The Verge adds a shortcut: tap the new combined Wi-Fi and battery icon in the top-right corner to open Control Center in one go.

4. Rebuild your Action button shortcuts on the Lock Screen

If you used the Action button for the torch, a Shortcut or Silent mode, add those as Lock Screen controls instead. iThinkDiff notes that on the Duo these controls run along the side of the display rather than the bottom. Touch and hold the Lock Screen, tap Customize, tap the Lock Screen, remove one control and add the one you want. Camera Control stays on the side for the camera, and its pressure can be adjusted in Settings > Camera > Camera Control.

5. Fix volume and rotation behaviour

Turn the open phone clockwise and the volume buttons can end up feeling upside down. Go to Settings > Sounds & Haptics > Fixed Position Volume Controls and switch it off, and the top button will raise the volume however you hold the phone, according to The Verge and iThinkDiff. iThinkDiff says some units arrive with this switch on, so check yours. The Verge also found that orientation lock can be set separately for each screen: lock the outer screen and leave the inner one free to rotate.

6. Learn App Pair and Split View

The inner screen can show two apps side by side. Open one app on the unfolded phone, swipe up from the bottom, pause and drag it toward an edge, then choose the second app. Tap the divider to lock the two together as an App Pair, so opening either brings back both. MacRumors and Tech Between the Lines both note two limits: the split is always 50/50, and only one of the two apps can play audio at a time. Then update everything in the App Store: apps carrying the "Made for iPhone Duo" badge fill the inner screen, and Apple named more than 50 that are ready now or coming soon, Tech Between the Lines reports.

7. Rearrange the open Home Screen and fix the case edge

When the Duo opens, the inner screen shows two Home Screen pages together, with Today View on the left. Touch and hold an empty spot, tap Edit and move your most-used apps to the pages you see when the phone is open. If you use a case, iThinkDiff points to Shift Left Edge in Settings > Display & Brightness, which moves outer-screen content clear of the case's front edge.

8. Move your phone number to the eSIM

There is no SIM tray on the iPhone Duo in any country. If you skipped the transfer during setup, go to Settings > Cellular, tap Set Up Cellular or Add eSIM, and choose Transfer From Nearby iPhone or scan your carrier's QR code. Once the number moves, it stops working on your old phone. Under Add eSIM, View Travel Options lists temporary plans for trips abroad, iThinkDiff explains.

9. Protect the battery and use StandBy wisely

Check that Optimized Battery Charging is on in Settings > Battery > Charging; it pauses at 80% and finishes charging closer to when you usually unplug. Each half of the Duo has its own battery, working as one. Half-fold the phone and it enters StandBy, which on the Duo works even when it is not charging. Tech Between the Lines cites one early owner who saw a noticeable battery drop after 30 to 40 minutes unplugged, so turn on Only While Charging in Settings > StandBy if you mainly use it on a nightstand.

10. Treat the inner screen with care

The inner display has a nano-texture cover layer that is meant to stay on. Tech Between the Lines warns not to peel it or add a glossy aftermarket protector, which would sit over the under-display camera and the fold. Glance for grit before you close the phone, because anything caught between the halves gets pressed into the screen. The same outlet reports that a small number of owners have posted photos of inner screens cracked along the fold, often with a line of bright pixels, and that Apple replaced at least one of those phones on the spot.

11. Decide on AppleCare+ within 60 days

Repairs are expensive. Without AppleCare+, Tech Between the Lines lists an inner display repair at $999 and other damage at $1,499. With AppleCare+, the fees fall to $99 for the inner display, $29 for the outer display and $19 for the cover layer. AppleCare+ costs $19.99 a month or $199.99 a year and can be added within 60 days of purchase. A failure from normal use falls under the one-year warranty, and Apple's standard return window is 14 days, so if you spot a crack or pixel line you did not cause, take it in during that window.

12. Try the new Duo features

Once the basics are done, try the camera features built around the outer screen. Duo Preview shows the person you are photographing a live preview of the shot, Kid Cue plays animations on the outer display to get a child to look at the lens, and Smart Take waits until everyone in a group is ready before taking the picture. You can also turn the open phone around and use the 48MP main camera for selfies, with the outer screen as a viewfinder. A MagSafe grip, which The Verge recommends, makes the heavier phone easier to hold for long periods.

FAQ

Does the iPhone Duo have Face ID?

No. It uses Touch ID built into the side button, so register several fingers during setup.

How do I silence the iPhone Duo without a Ring/Silent switch?

Add the Silent Mode control to Control Center (swipe down from the top right, tap +, then Add a Control).

Can I use a physical SIM card in the iPhone Duo?

No. The iPhone Duo is eSIM only worldwide. Transfer your number in Settings > Cellular > Add eSIM.

Should I put a screen protector on the inner display?

No. The inner screen has a factory nano-texture cover layer that should stay on, and tech outlets advise against glossy aftermarket protectors over it.

How much does the iPhone Duo cost?

In the US it starts at $1,999 for 256GB, then $2,199 (512GB), $2,599 (1TB) and $3,199 (2TB), according to MacRumors and USA Today.

For more on what changed in your phone and inbox this week, see our guide to turning off Gmail-based ad personalisation.

Sources

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