Samsung’s Galaxy Z Fold 7: The Thinnest Foldable Yet at 3.9mm

Samsung’s thinnest foldable yet still trails Honor’s Magic V5 by mere fractions of a millimeter.

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Image credit: Roland Quandt

Key Takeaways

Key Takeaways

  • Galaxy Z Fold 7 measures just 3.9mm unfolded, 8.9mm folded.
  • Weighs 215g, down from Fold 6’s 239g bulk.
  • Sets Samsung record but Honor Magic V5 still holds global crown.

Bulky foldables have plagued early adopters since day one, but Samsung’s upcoming Galaxy Z Fold 7 finally addresses your biggest complaint. The device measures an almost impossible 3.9mm when unfolded—thinner than most regular smartphones and a dramatic leap from the chunky 5.6mm thickness of last year’s Fold 6.

When folded, the Z Fold 7 shrinks to just 8.9mm thick, down from the Fold 6’s pocket-busting 12.1mm. That’s the difference between a device that announces itself in your jeans versus one that disappears completely. Samsung achieved this engineering feat through a complete redesign, trimming bezels to 0.5mm and dropping the overall weight to 215g—24 grams lighter than its predecessor.

Meet the thinnest and lightest Z Fold yet, measuring just 8.9mm thin when folded and 4.2mm when unfolded, and weighing 216g. […] a classic 6.5-inch display for on-the-go, combined with a generous 8-inch screen […] also features a Qualcomm Snapdragon 8 Elite […] 4,400mAh battery […].

Roland Quandt (@rquandt.bsky.social) 2025-07-07T07:53:24.025Z

The measurements get slightly complicated because Samsung traditionally excludes the protective bumpers around the inner display. Including those bumpers, the real-world thickness sits at 4.5mm unfolded, according to leaked CAD files. Still impressively thin, but not quite as dramatic as the headline numbers suggest.

Your excitement should be tempered by one reality check: Samsung won’t claim the global crown. Honor’s Magic V5 reportedly measures 8.8mm folded, making it 0.1mm thinner than Samsung’s newest flagship. Think of it like the smartphone equivalent of Olympic sprinting —these manufacturers are now competing in fractions of millimeters.

The extreme thinness raises legitimate durability concerns. You’re essentially carrying a device with the structural integrity of a premium credit card that unfolds into a tablet. Samsung claims improved durability, but real-world testing will determine whether this engineering marvel can survive your daily routine without turning into an expensive paperweight.

Battery life remains another question mark. Cramming flagship performance into such a thin package typically means compromising on battery capacity. The company hasn’t revealed specific battery specs, but physics suggests some trade-offs are inevitable.

Expected to launch in July 2025, the Galaxy Z Fold 7 represents Samsung’s most ambitious attempt to make foldables mainstream. Whether you’re willing to trust your daily driver to a device this thin depends on your tolerance for living on the bleeding edge of technology.

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