Consumer Electronics

Samsung Flex Titanium Makes Foldable Phone Creases a Thing of the Past

After seven generations of foldable phones, Samsung has unveiled a display technology that solves the two biggest complaints about foldables: the visible crease down the middle and long-term durability concerns. The solution involves titanium — and it is arriving just in time for the next Galaxy Z Fold.

• Flex Titanium replaces the carbon-fiber-reinforced polymer support layer used in previous Galaxy Z Fold models with a dual-layer titanium structure. A titanium-alloy film sits on top of the display panel for flexibility and resilience, while a titanium plate underneath provides rigid structural support. Together, they distribute folding stress more evenly and virtually eliminate the visible crease.
• Samsung produced the titanium-alloy film through an ultra-precision rolling process that achieves thickness tolerances measured in micrometers. The titanium plate was manufactured using a specialized forging technique typically reserved for high-end aerospace components, making the structure both stronger and thinner than the polymer-based predecessor.
• The new architecture also enables a slimmer overall device profile and improved power efficiency, because the titanium layers conduct heat more effectively than the previous plastic-based materials, reducing the need for thick thermal management systems inside the phone.

The crease on foldable phones has been a stubborn engineering problem since the first Galaxy Fold launched in 2019. Early devices showed a pronounced valley along the fold line that worsened with repeated use, and the polymer-based support layers could develop permanent deformation over tens of thousands of folding cycles. Various manufacturers experimented with different hinge mechanisms and screen protectors, but none fully eliminated the issue — until now.

Samsung's Flex Titanium technology works at the material level rather than the mechanical level. By replacing the polymer layer with a titanium dual structure, the display can bend to a tighter radius without creating a permanent crease, because titanium's higher elastic limit allows it to return to its original shape more reliably than CFRP. Independent durability tests suggest the new screens can withstand well over 300,000 folds without visible degradation, compared to roughly 200,000 for the previous generation.

The first devices to feature Flex Titanium are expected to be the Galaxy Z Fold 8 and potentially a new Fold 8 Ultra model, both likely to be announced at Samsung's upcoming Galaxy Unpacked event. With this breakthrough, Samsung may have removed the last major objection consumers have to switching from traditional slab phones to foldables — the visible reminder that the screen is folded at all.