Last updated: February 25th, 2026 at 11:11 UTC+01:00
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A quality-of-life feature we probably should’ve gotten earlier.
Reading time: 2 minutes
One of the biggest risks foldable phones face is screen damage. Their hinged design makes them inherently vulnerable to debris. A single pebble caught between the folding halves can spell disaster.
Samsung seems well aware of this weakness. Recent findings in a leaked One UI 9 build suggest the company is exploring a software-based fix. And, by the looks of it, the solution is not limited to the upcoming Galaxy Z Flip 8 and Galaxy Z Fold 8, but also the rumored Galaxy Wide Fold.
Code strings discovered by Android Authority in the leaked One UI 9 build point to a Foreign Material Detection feature designed to warn users before damage occurs.
Interestingly, the strings were accompanied by rough renders of three upcoming foldables: the Galaxy Z Flip 8, the Galaxy Z Fold 8, and the so-called Galaxy Wide Fold.
Q8 = Galaxy Z Fold 8
H8 = Galaxy Wide Fold
According to the findings, the Foreign Material Detection alert would trigger if the phone fails to fold completely. The warning message reads:
Your phone didn't fold completely. Open your phone again, and check if there are any foreign substances on the screen to avoid screen damage. If you don't need this detection alert, you can turn it off in the Settings.
There is no indication of additional hardware at play. The system appears to rely solely on detecting whether the device is fully closed. It cannot confirm whether the obstruction is debris or simply user handling.
Thankfully, the code strings suggest that the system can be turned off. And regardless, it's a good start. Better than no Foreign Material Detection system at all.
And lastly, since the system doesn't seem to require any extra hardware or special sensors, it could potentially be released retroactively on older Galaxy foldable phones through future One UI updates.
Mihai is a blogger and column writer at SamMobile. His first Samsung phone was an A800 which took a lot of beating, and a part of him still misses the novelty of the clamshell design. In his free time, he enjoys watching shows, documentaries, and stand-up comedy; listening to music, taking walks, and occasionally playing old(er) video games.