Samsung Galaxy Z Flip 4 review: specs, battery & used prices

Summary

The Galaxy Z Flip 4 is the foldable that made the clamshell formula practical: Snapdragon 8 Plus Gen 1 power, a 6.7-inch 120 Hz main screen, and IPX8 water resistance in a 187 g package that folds in half. Our compactness score of 87/100 is the headline — few phones this size disappear into a pocket so completely. The trade-offs are a small battery and a camera setup that never aimed at the flagship tier.

Display and design

The interior 6.7-inch OLED runs at 120 Hz with a rated peak of 500 nits — serviceable indoors, less confident in direct sun, and part of why the screen score lands at 56/100. The IPX8 rating covers water but not dust, the usual foldable compromise. At 187 g it is lighter than most conventional flagships; folded, it is barely half a phone tall.

Performance

The Snapdragon 8 Plus Gen 1 is the refined version of Qualcomm's 2022 flagship chip, and it shows: an everyday score of 76/100 and gaming at 32/100 — unusually strong for a foldable of this size, since most clamshells of the era shipped mid-range silicon. One honest caveat: Samsung's committed update window for this generation has run its course, so the software runway is behind it.

Camera

Two 12 MP sensors — main and ultrawide — with OIS on the main and 4K60 video. There is no telephoto, and the 22/100 camera score says so: daylight shots are pleasant, low light is average, and zoom beyond 2x is digital guesswork.

Battery and charging

The 3,700 mAh battery is the structural cost of the form factor — a battery score of 14/100 and 25 W charging mean a top-up by evening for heavy users. Light users will make it through a day; nobody will call the endurance generous.

Verdict

Secondhand supply is deep and cheap: 8/128 units cluster around $134 (six listings) and 8/256 units around $170 (ten listings) — among the most affordable ways into a water-resistant foldable. If the battery worries you, the Flip 5 brings a larger cover screen and the same endurance; if budget rules, the Flip 3 is cheaper still but a generation older inside.