Foldables promised to squeeze tablet screens into pocketable phones, but most of them still feel like a compromise. You get one big crease down the middle and an aspect ratio that makes everything look stretched or squashed, depending on what you’re doing. The real challenge isn’t just adding more screen, it’s getting enough space to actually work like a small laptop instead of a phone that got wider and heavier.
Samsung’s Galaxy Z TriFold tries to solve that by folding twice instead of once. Open it fully, and you’re holding a 10-inch Dynamic AMOLED 2X display that measures 3.9 mm thick at its thinnest point, basically three 6.5-inch phone screens laid side by side. Fold it back up, and the whole thing collapses to 12.9 mm thick, which is about as thick as a regular phone in a case, except this one weighs 309 grams and hides a full-sized tablet inside.
Designer: Samsung
The device is aggressively thin when open. It looks like three glass sheets joined by two subtle hinge bumps, thin enough to hold between fingertips without much visual mass. The frame uses Advanced Armor Aluminum for rigidity, the hinge housing is titanium, and the back panel is a ceramic-glass reinforced polymer that resists cracks. The camera bump and hinges interrupt the silhouette slightly, but the overall impression is of a very thin, very dense slab of screen.
Samsung reworked its hinge system into two differently sized Armor FlexHinges with dual-rail structures that let the three panels close with minimal gaps between them. The display stack includes a new shock-absorbing layer and reinforced overcoat designed for a screen that folds twice instead of once. Samsung CT scans flexible circuit boards and uses laser height checks for internal components, unusual quality control steps that suggest the company knows people are worried about reliability with this many moving parts.
The 10-inch QXGA+ main screen behaves like three portrait phones across, giving you room for three apps side by side without everything feeling cramped. Samsung’s examples show an architect running blueprints, notes, and a calculator at once, or a music producer editing audio while browsing references and messaging. The crease is minimized, the panel runs at 1 to 120 Hz adaptive refresh, and brightness hits 1600 nits to make it feel more like a small monitor than a tablet.
Standalone Samsung DeX turns the TriFold into a tiny multi-desktop machine, with up to four virtual workspaces each running five apps simultaneously. Add an external monitor in Extended Mode, and you can drag windows between screens like a laptop setup. Galaxy AI features adapt to the larger canvas too, with Photo Assist, Browsing Assist, and Gemini Live that can summarize pages, edit images side by side, or give design advice when you show it a room and a shopping site at the same time.
For entertainment, the 10-inch screen works well for films, comics, or YouTube with comments running alongside the video. The 6.5-inch cover screen hits 2600 nits and 120 Hz for quick tasks when you don’t want to unfold everything. Vision Booster keeps content readable in bright light, and the minimized crease tries to keep everything smooth, whether you’re indoors or outside.
Inside there’s a Snapdragon 8 Elite for Galaxy, 16 GB RAM, up to 1 TB storage, and a 200 MP main camera with 3x telephoto and 12 MP ultra-wide. The 5,600 mAh three-cell battery spreads across the panels for balanced weight, charges at 45 W wired or 15 W wireless, and supports reverse wireless charging. The Galaxy Z TriFold launches in Korea on December 12, 2025, with other markets including China, Taiwan, Singapore, the UAE, and the U.S. following after.
The trade-offs are obvious, though. At 309 grams with two hinges, this will feel heavy and complex for anyone who just wants a phone that fits in their pocket and works. Samsung doesn’t mention S Pen support, which seems like a missed opportunity for artists and designers who’d want to use this 10-inch canvas for sketching or illustration in a device that still fits in a bag.
Long-term durability remains an open question, even with IP48 and all the quality control Samsung mentions. But for people who already push their phones into laptop territory and want the biggest possible screen in the smallest possible folded size, the TriFold makes a clear statement about where high-end mobile is heading. It’s excessive, complicated, and not for everyone, but that seems to be the whole point.
The post Galaxy Z TriFold Fits a 10-Inch Screen Into a 12.9mm Phone first appeared on Yanko Design.
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