iFixit showed the shocking damage dust can do to the Samsung Galaxy Z Fold 8 — and the iPhone Ultra needs to solve this

Dust 1, foldable phone 0

by · TechRadar

News By Alex Blake Published 14 August 2026

(Image credit: iFixit)

Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter

  • iFixit opened up Samsung’s new Galaxy Z Fold 8 foldable phone
  • It found the device’s hinge was vulnerable to dust and sand particles
  • Apple’s upcoming iPhone Ultra might be similarly susceptible

If you’re considering getting the Samsung Galaxy Z Fold 8 — or any of the best foldable phones, for that matter — you might want to check out iFixit’s teardown of Samsung’s flashy new device. Because it looks like the foldable has a fatal weakness that could swiftly ruin your expensive investment, if you're not careful.

The handy folks at iFixit noticed that the Galaxy Z Fold 8 has an ingress rating of IP48, meaning it can resist water but not smaller dust particles. With that in mind, iFixit decided to give the foldable a light sprinkling of sand, complemented by UV-reactive dust that showed where the particles ended up — and how they affected Samsung’s phone.

The results were not pretty. With the dust in place, iFixit said that the phone’s hinge “started making truly awful crunching and grinding noises, and the phone stopped opening normally.” That’s a pretty disastrous result — after all, most phones will encounter dust particles on a very regular basis.

Latest Videos FromTechRadarWatch full video here:

Although Samsung says the Galaxy Z Fold 8 has an IP48 rating, this only protects against particles 1mm in size or larger. Yet that might not be enough for ordinary usage, as the everyday sand iFixit used in its testing featured particles measuring 0.16mm. As we saw from the results, it doesn’t offer much in the way of defense.

The problem is that the Galaxy Z Fold 8’s hinge contains a lot of moving mechanical parts, all of which provide an opportunity for small particles to “cause trouble,” in iFixit’s words. While Samsung’s internal seals did a good job of keeping dust out of the batteries and main electronic components, they couldn’t ensure the safety of the hinge. And without this component, a foldable phone loses its entire raison d’être.

A warning for the iPhone Ultra

Galaxy Z Fold 8 Teardown The Hinge Has a Serious Problem - YouTube

Watch On

The Galaxy Z Fold 8 teardown isn’t just interesting for Samsung fans — because Apple’s long-awaited iPhone Ultra is expected to take on a similar form factor, it could provide a few hints (and warnings) about what might arrive at the Cupertino firm’s upcoming September launch event.

And it’s not like dust ingress is something Apple will automatically be immune to. As iFixit put it, Samsung’s device “still has one enormous liability: it folds.” It’s near-impossible to keep dust away from a phone in everyday use, and since folding is the entire point of the iPhone Ultra, it could well be beset by similar problems, unless Apple has an ingenious solution.

Get daily insight, inspiration and deals in your inbox

Sign up for breaking news, reviews, opinion, top tech deals, and more.

Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors