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Is this the thinnest mid-range smartphone?

The Samsung Galaxy A57 is only 6.9 mm thick.
ⓘ Daniel Schmidt
The Samsung Galaxy A57 is only 6.9 mm thick.
With a thickness of just 6.8 millimeters, this mid-range smartphone is one of the slimmest in its class. This review shows just how much technology fits into its sleek case and whether the design offers real advantages over the competition.

With the Galaxy A57 5G, Samsung is focusing less on new features and more on design. This mid-range smartphone is just 6.9 millimeters thin (measured at 6.8 mm in our test) and weighs only 179 grams. Combined with its matte aluminum frame, Gorilla Glass Victus+ on the front and back, and the new IP68 certification, the A57 makes a significantly higher-quality impression than many of its direct competitors.

But does that make it the thinnest smartphone in its class? At least among established mid-range models, it’s one of the slimmest devices on the market. A Nothing Phone (4a) measures 8.5 mm, the Xiaomi Redmi Note 15 Pro+ 5G comes in at around 8.19 mm, and even Samsung’s predecessor, the Galaxy A56, is noticeably thicker at 7.4 mm. But it can get even thinner! The Motorola Edge 70 (6.00 mm) and Edge 70 Fusion (6.8 mm) manage to beat these figures.

The slim profile isn’t just for show. The Galaxy A57 feels comfortable in the hand and is surprisingly easy to handle despite its 6.7-inch display. At the same time, users hardly have to make any compromises: Samsung has included a 5,000-mAh battery, stereo speakers, and IP68 certification. Only the glass back is prone to fingerprints.

The Galaxy A57 5G (buy it here on Amazon) is thus one of the slimmest and highest-quality smartphones in its class. The design is one of its strongest selling points—but on its own, it’s not enough to fully justify the comparatively high price and the few technical improvements over its predecessor.

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Daniel Schmidt, 2026-07-13 (Update: 2026-07-13)