The latest iPhone Duo teardown coverage adds five details the first wave of reporting left out, and the most important one is a second suspect inside the hinge. GSMArena reported on October 26, 2026, on iFixit’s teardown of Apple’s first folding phone. The score is unchanged at 5 out of 10, but the new account describes a locking hinge, a battery method needing only a small voltage supply, and an accordion-shaped cable through the hinge.
This article is a follow-up, not a fresh teardown story. PetaTech24 already covered the iFixit teardown in iPhone Duo iFixit Teardown: 5 Clues Behind the Cracked Screens, which explained the curved guides, the center support bar that must drop out of the way as the phone folds, and the dust that can enter the hinge despite the IP68 rating. The iPhone Duo teardown material here is what GSMArena’s account adds.
The iPhone Duo teardown score deserves a second look next to Samsung’s foldables: the Duo’s 5 out of 10 beats the Galaxy Z Fold8 at 4 out of 10 and its predecessor at 3 out of 10, making it the most repairable folding phone iFixit has tested.
The Quick Read
- GSMArena’s iPhone Duo teardown account keeps the 5 out of 10 score and adds a comparison: Galaxy Z Fold8 scored 4 out of 10 and its predecessor 3 out of 10.
- A second hinge theory appears: an accordion-like flex cable running through the hinge joins the earlier theory that internal components fail to descend properly and get stuck.
- Some early units reportedly show a hinge that locks up, feels stiff, needs more effort to open, and makes a popping sound followed by permanent display damage.
- Repair details get specific: the cover screen comes off with a suction cup clamp and pry tool, and the dual batteries release through anodic delamination with a 9-volt battery on silver tabs.
- The crease trick gets a closer look: thousands of microscopic bumps on the screen protector scatter reflections, with RGB sub-pixels at varying angles.
- Nothing here changes the earlier cautions: no Apple statement on the hinge reports, no failure rate in public, and the score stays provisional pending replacement parts.
iPhone Duo Teardown: The Hinge Locking Problem
The worrying part of the iPhone Duo teardown is not the score, it is the hinge behavior described on some early units. GSMArena reports that several early Duo users found the hinge feeling unusually stiff at some points, requiring more effort to open the folding display, and producing an audible popping or cracking sound accompanied by permanent display damage. That is sharper than the earlier coverage, which described a crunch and a green line pattern.
Two theories are on the table, and GSMArena presents both as theories, not findings. One is that some components inside the hinge are not descending properly and are getting stuck, which matches the earlier coverage of the center support bar that must drop out of the way at exactly the right moment. The other is new: an accordion-like flex cable runs through the hinge, and it could be the other main factor. A cable that must fold and unfold thousands of times inside a tight, moving mechanism is an obvious stress point. Neither theory is confirmed, and neither should be read as a verdict on every Duo.
iPhone Duo Teardown: How Repairable It Really Is
The repair story in the iPhone Duo teardown is genuinely good news, and the new account makes it concrete. The cover screen is pretty simple to take out with a suction cup clamp and a pry tool, a process shown around the 4:20 mark in iFixit’s video. The dual batteries release through anodic delamination, which involves hooking up a low-voltage power supply, such as a 9-volt battery, to the silver tabs on the battery cells, which releases the cells from the phone. That step appears around the 5:50 mark. Glued-in batteries have long been the enemy of phone repair, so a release method needing only a small voltage supply is a meaningful design choice.
Put next to Samsung’s foldables, the iPhone Duo teardown score of 5 out of 10 looks stronger than it sounds on its own. The Galaxy Z Fold8 earned 4 out of 10 from iFixit, and its predecessor earned 3 out of 10, according to GSMArena. A one point lead over the Fold8 and a two point lead over its predecessor is not a revolution, but in a category where every foldable has scored poorly, it matters. The score remains provisional pending replacement parts, exactly as the earlier coverage stated.
The Screen Trick Under the Microscope
The earlier coverage explained that Apple hides the crease with oval pixels and a nano-texture coating, and the iPhone Duo teardown video shows what that coating actually looks like up close. At the 3:00 mark, iFixit puts the main display’s matte nano-texture cover layer under a microscope: thousands of microscopic bumps break up reflections and hide the crease in the middle of the OLED panel. It works in tandem with the main display’s altered RGB sub-pixels, arranged at varying angles to help mask the crease. The bumps and angled sub-pixels change what the eye sees, but they do nothing to protect the panel from a hinge that locks up or a cable that snags.
What Carries Over, and What Does Not
Two cautions from the earlier coverage carry over unchanged. First, no public Apple statement on the hinge reports appears in either account. Second, no complaint count or failure rate exists in public, so nobody can say how many units show the stiff hinge symptom or whether the popping sound cases share one cause. What does not carry over is the sense that the hinge story has only one suspect: the support bar theory still stands, but the flex cable is now a second candidate.
What Owners Should Do Now
If you already own a Duo, the iPhone Duo teardown follow-up adds one practical warning to the earlier advice: do not force a hinge that resists. The earlier coverage advised folding slowly the first few times and contacting Apple or the retailer with photos if the hinge crunches or feels gritty. The locking symptom strengthens that advice, because a hinge that needs extra effort and then gives way with a popping sound is exactly the moment permanent damage is reported to follow. Stop, photograph any damage before folding again, and get the unit checked. If you are still deciding, budget for AppleCare+: the earlier coverage put an inner display replacement at a reported $999 in the US without AppleCare+, or $99 with it.
Quick Answers
Is this a new teardown, or the same one?
It is the same iFixit teardown, reported a second time by GSMArena with new details. This follow-up covers only what the GSMArena account adds.
What is the new hinge theory?
An accordion-like flex cable running through the hinge could be a main factor, alongside the earlier theory that internal hinge components fail to descend properly and get stuck. Both are theories, not confirmed causes.
How repairable is the Duo compared with Samsung foldables?
In the iPhone Duo teardown, iFixit gave the Duo 5 out of 10, the Galaxy Z Fold8 4 out of 10, and its predecessor 3 out of 10, according to GSMArena. The Duo score is provisional pending replacement parts.
How do the batteries come out?
Through anodic delamination: a 9-volt battery connected to silver tabs on the cells releases them. This is a repair shop method, not a do-it-yourself job.
Has Apple responded to the hinge reports?
No public Apple statement on the hinge reports appears in either the earlier coverage or the GSMArena account. The symptom reports come from early owners, and no failure rate has been published.
The Takeaway
The GSMArena account of the iPhone Duo teardown does not overturn the first story, it sharpens it. The Duo stays the most repairable foldable iFixit has tested, with a cover screen that comes off with a suction cup and a pry tool and batteries that release with a small voltage supply. At the same time, the hinge story gains a second suspect in the accordion-like flex cable and a sharper symptom in the locking, popping hinge. Neither theory is proven, Apple has said nothing publicly, and the score stays provisional. For owners, the advice is simple: never force a resisting hinge, and keep AppleCare+ in the budget.
Sources
- GSMArena, iPhone Duo teardown reveals it is fairly repairable but its complex hinge is worrying, October 26, 2026.
- iFixit, iPhone Duo teardown video and findings, via GSMArena, October 26, 2026.
- PetaTech24, iPhone Duo iFixit Teardown: 5 Clues Behind the Cracked Screens, batch 13, for the earlier teardown account, owner reports, Apple statement status, and repair estimates.
