To determine which of the three foldable devices is the thinnest, I have taken measurements of the Samsung Galaxy Z Fold 7, Honor Magic V5, and Oppo Find N5.
In the ever-evolving world of technology, the competition for the title of the world's thinnest phone is particularly intense among foldable devices. Three notable contenders are the Samsung Galaxy Z Fold 7, Oppo Find N5, and Honor Magic V5.
Recently released, the Samsung Galaxy Z Fold 7, the Galaxy S25 Edge, and Apple's iPhone 17 Air have captured the attention of tech enthusiasts. The Galaxy Z Fold 7 boasts a new 200MP sensor in its camera bump, a clean-looking hardware design, and the longest software support at seven years. Some suggest that it might be the design king among the compared foldable phones.
When it comes to thickness, the Galaxy Z Fold 7 is a standout performer. When closed, it measures 9.16mm, making it one of the slimmest foldable phones on the market. When open, it thins down to a remarkable 4.35mm, making it the thinnest foldable phone available globally, according to recent studies.
The Oppo Find N5, with its book-style foldable design, has held the title of the thinnest book-style foldable phone for most of 2025. When closed, it measures 9.17mm, slightly thicker than the Galaxy Z Fold 7. However, when open, it measures 4.36mm at its thinnest, only slightly thicker than the Galaxy Z Fold 7. The actual thickness of the Oppo Find N5, accounting for camera bumps and protective films, is less clearly documented but is likely similar to Samsung’s in thinness, though it is less widely sold and studied.
Honor's Magic V5, another book-style foldable, is advertised as the "world's thinnest phone" in the "book-style" foldable category. However, due to factors like camera bumps and protective films not being included in the advertised specs, the actual thickness of the Honor Magic V5 is 9.34 mm. This discrepancy makes it actually thicker than the Galaxy Z Fold 7.
The Huawei Mate XT, a tri-fold foldable phone, is another player in the thinness race, but it is not directly comparable to the other three devices due to its unique design.
The Samsung Galaxy Z Fold 7 also offers improved durability by foregoing stylus support and has the most dependable customer service. The Honor Magic V5 is scheduled to go on sale internationally at the end of August.
In summary, among these phones, the Galaxy Z Fold 7 is the thinnest foldable when actual real-world measurements including camera protrusions and protective layers are considered. The Galaxy Z Fold 7, when open, measures 4.35mm in thickness, making it the slimmest foldable phone available globally. Honor’s Magic V5 is somewhat thicker than its advertised thickness due to excluded elements, making it actually thicker than the Galaxy Z Fold 7. The Oppo Find N5’s real thickness is less clearly documented but is likely similar to Samsung’s in thinness, though it is less widely sold and studied.
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