The Secret Behind Galaxy Z Fold7 and Flip7’s Slim Yet Strong

Ohana Magazine – In early July, Samsung unveiled its latest foldable flagships — the Galaxy Z Fold7 and Galaxy Z Flip7. While these two smartphones inherit the core DNA of the Galaxy Z series, they arrive with a sleeker, lighter, and yet tougher build than their predecessors.

The Galaxy Z Fold7 weighs just 215 grams — lighter than the Galaxy S25 Ultra — and measures only 8.9 mm thick when folded, or 4.2 mm when opened. This is a significant leap from the Fold6’s 12.1 mm folded thickness and 5.6 mm when open. So, what exactly makes these new foldables so thin and robust?

Armor FlexHinge: Slimmer, Lighter, Stronger

The game-changing difference lies in the third-generation Armor FlexHinge. Compared to the hinge on the Galaxy Z Fold6, the new version is 27% thinner and 43% lighter. This redesign not only trims down the device’s profile but also boosts durability, ensuring the phone can survive countless folds, everyday knocks, and even a quick toss into a bag.

Water Droplet Innovation for a Seamless Fold

Samsung also introduced a Water Droplet design to the hinge mechanism. This allows the screen to fold with a smoother curve, reducing the gap when closed and minimizing visible creases when open. The result? A cleaner, more polished look — almost as if the fold doesn’t exist at all.

Multi-Rail Structure for Long-Term Durability

Durability goes beyond just materials. The Fold7 and Flip7 feature a Multi-Rail structure that distributes pressure evenly, preventing wear from frequent folding. This mechanism keeps the hinge movement precise and stable, even after thousands of open-close cycles.

Built to Last a Decade

Samsung didn’t just claim durability — they tested it. The hinge survived 500,000 folds in trials verified by independent certification company Bureau Veritas. That’s the equivalent of 10 years of normal use or 6 years of heavy use, meaning you can fold and unfold your device without worrying about premature wear.

With its slim design, reinforced hinge, and smart engineering, the Galaxy Z Fold7 and Z Flip7 prove that you don’t have to sacrifice strength for style. These are foldables built not just to impress, but to last.