Xiaomi Mix Fold 4 review: specs, battery & used prices

Summary

The Xiaomi Mix Fold 4 is a 2024 book-style foldable on the Snapdragon 8 Gen 3, with a 7.98-inch inner OLED rated at 3000 nits, a 5100 mAh battery with 67 W charging, and an IPX8 body at 228 grams, remarkably light for its class. Our catalog scores it 91 on screen and 90 on the everyday axis, with a camera axis of 50 led by a 50-megapixel stabilized main sensor and video up to 8K24. It launched near $1300 for the 12/256 GB trim, with used examples around $1329. The Galaxy Z Fold 6 is the obvious Western benchmark, and the Honor Magic V3 is the thinnest rival in our catalog.

Display and design

The 7.98-inch inner OLED refreshes at 120 Hz with a 3000-nit peak, one of the brightest foldable panels we track, and the crease-and-hinge quality is where Xiaomi's fourth generation shows its iteration. At 228 grams with IPX8 submersion sealing, it weighs like a slab flagship of two years earlier while carrying a tablet-size screen. The outer display keeps the folded experience genuinely usable rather than vestigial.

Performance

The Snapdragon 8 Gen 3 earns an everyday axis of 90 and a gaming axis of 54 in our model: the foldable's large battery and internal volume keep the flagship chip in its comfort zone, so split-screen multitasking, big-screen gaming and 8K capture all behave like a conventional flagship. Up to 16 GB of RAM in the top trims suits the productivity posture the form factor invites.

Camera

A 50-megapixel main sensor with optical stabilization leads the rear alongside an ultrawide and a telephoto module, with video up to 8K24. The camera axis of 50 is strong for a foldable, a category that historically sacrificed optics for thinness, and the Leica-tuned processing keeps output consistent with Xiaomi's slab flagships. Folding the phone half-open gives you a stable tripod for hands-free shots, a genuinely useful foldable-only trick.

Battery and charging

The 5100 mAh battery scores 42 on our battery axis, a full day of mixed use even with the big inner panel, and the 67 W wired charging scores 48, refilling it in about fifty minutes. Wireless charging is supported, which few book foldables of its generation managed. The endurance-to-weight ratio remains the engineering achievement of this device.

Verdict

The Mix Fold 4 is the book foldable for buyers who prioritize weight and brightness: a 7.98-inch 3000-nit inner screen and IPX8 sealing at 228 grams, near $1300 new and hovering around that used. Software support records are not fully cataloged for this model, which matters for an import-heavy device and should be weighed honestly. Against the Galaxy Z Fold 6 it trades software polish for hardware specifications; against the Honor Magic V3, it is the brighter, camera-stronger pick.