iPhone Duo Screen Cracking: Symptoms and How to Get It Fixed

Apple's first foldable phone, the iPhone Duo, went on sale on October 23, 2026, and reports of iPhone Duo screen cracking followed almost at once. Three days later, Apple acknowledged "an issue impacting the inner display on a small number of iPhone Duo units." By then, owners in South Korea, the U.S., Australia and Hong Kong had posted photos of cracked folds and lines across the screen, and the episode had picked up a nickname online: "Crackgate." Here is what the reported iPhone Duo screen problems look like and what to do if your phone shows them, based on Apple's statements and reporting through October 30.

What iPhone Duo screen problems are owners reporting?

Most reports point to the same spot: the middle of the 7.6-inch inner display, right where the hinge runs underneath. The problems fall into three groups: the screen cracking, lines appearing on the display, and the hinge behaving oddly.

One case reported by The Standard, a Hong Kong newspaper, is typical. After about half a day of use, the buyer's phone resisted unfolding. When he opened it again, he heard a pop and the inner display was damaged. Staff at an Apple Store found no sign of misuse, noted an internal protrusion pressing against the screen, and swapped the phone on the spot.

How widespread the problem is remains unclear. Apple has not said how many units are affected, and some photos circulating online cannot be traced to a specific owner or date.

Has Apple admitted a defect, and who gets a free replacement?

Yes, in part. On October 26, Apple said it was aware of an issue affecting the inner display on a small number of iPhone Duo units and told affected customers to contact AppleCare for a replacement, according to Kyunghyang Shinmun, a South Korean daily. Apple has not disclosed the cause, how many phones are involved, or whether a recall is under consideration.

AppleCare here means Apple's support and warranty service. According to Financial News, a South Korean business daily, owners can file a request through the Apple Support app; if an authorized service provider confirms the defect, the phone is replaced free of charge regardless of where it was bought. Apple said it has set aside both refurbished and new units for replacements.

What to do if your iPhone Duo screen cracks or shows lines

Stop folding the phone, document the damage, back it up, and go through Apple's official support channels. Taking it to an independent repair shop first could make it harder to get a free replacement.

1. Document it. Take photos and video of the screen and hinge, and write down that the phone was never dropped. This helps show the damage was not caused by you.
2. Back up your data. Replacements swap the entire device, so back up to iCloud or a computer first.
3. Contact Apple. Open a case in the Apple Support app or by phone, then book an appointment at an Apple Store or authorized service provider.
4. Don't take it apart. Apple designed the inner screen's cover layer to be replaceable, but iFixit advises owners not to peel it off themselves (MacRumors).
5. Check your warranty. Keep your case number and confirm when your coverage ends.

Warranty timing matters. According to Kyunghyang Shinmun, Apple's standard iPhone warranty lasts one year in the U.S. and two years in South Korea. Without AppleCare+ or similar coverage, an out-of-warranty inner display repair costs $999 (1,649,000 won in South Korea). In the U.S., the iPhone Duo starts at $1,999, so that repair runs about half the price of a new phone.

Getting a replacement quickly may be hard. Apple has not said how much replacement stock it has or how long repairs will take, and supply is so tight that new orders in South Korea are quoted for late January 2027 (Financial News). When you file a claim, ask for an estimated turnaround time.

Why is the iPhone Duo fold cracking?

Apple has not explained the cause. A teardown by repair specialist iFixit points to pressure building up around the hinge's center support as the most likely suspect.

According to MacRumors' summary of iFixit's findings, the damage clusters where the gap for the display cable meets the hinge's central support. If that support does not retract far enough as the phone closes, or if the curved hinge rails lift slightly, the screen could get pressed against that point. iFixit cautioned that a trapped particle, repeated bending, a manufacturing defect or a wiring fault could produce similar symptoms, so it could not reach a firm conclusion.

Dust is another variable. The iPhone Duo is rated IP68 for dust and water resistance, yet in iFixit's testing fine dust got past the USB-C port and speaker mesh and reached some of the hinge's moving parts. At launch, Apple pointed to a hinge built from more than 100 components and glass layers above and below the folding panel as the basis for its durability (Apple Newsroom).

How to protect an iPhone Duo that still works fine

If your phone has no problems yet, the best protection is careful handling and keeping dust out of the hinge. Francis Fong Po-kiu, honorary president of the Hong Kong Information Technology Federation, offered two tips in an interview with The Standard:

• Open the phone with both hands, applying even pressure on both sides and following the hinge's natural movement.
• Before closing it, check that no sand or grit is caught between the screen halves.

Based on its dust findings, iFixit also suggested being especially careful at the beach or anywhere sandy. In Gist7's view, if the phone catches or feels different while unfolding, don't force it open; get it checked first.

Gist7's take: should you buy a first-generation foldable now?

Samsung and Huawei also faced screen-breakage complaints with their first foldables (Kyunghyang Shinmun), so a weak fold in a first-generation device is not new. What stands out this time is how fast Apple responded. It acknowledged the problem three days after launch and promised replacements. Whether it can deliver on that quickly while stock is this tight is still an open question.

If you already own one, the best move is to watch for early warning signs while you are still under warranty. If you haven't bought one, there is little reason to rush. A phone retailer in Hong Kong suggested that buyers who aren't in a hurry wait for the second production run (The Standard). For more on Apple's other big hardware change this year, see our breakdown of the iPhone 18 Pro's variable aperture camera.

What to watch next

• Whether Apple discloses the cause and scale of the problem, or launches a dedicated replacement program
• When replacement stock catches up with demand
• Whether later production runs include a revised hinge design

Replacement terms can vary by country and store. Before filing a claim, check your device's warranty status with Apple Support.