Xiaomi Redmi Turbo 4 review: specs, battery & used prices

Summary

The Xiaomi Redmi Turbo 4 is a 2025 performance mid-ranger on the Dimensity 8400, with a 6.67-inch 120 Hz OLED rated at 1400 nits, a 6550 mAh battery with 90 W charging, and an IP68 body at 204 grams. Our catalog scores it 90 on the everyday axis, 71 on battery and 69 on charging, with a launch price near $400 for the 12/256 GB trim and used examples around $273. It continues the Turbo line's brief: flagship-adjacent silicon at aggressive prices. The Redmi K80 is its K-line sibling, and the Redmi Turbo 3 is the previous generation.

Display and design

The 6.67-inch flat OLED refreshes at 120 Hz with a 1400-nit peak, bright enough for confident outdoor use and color-rich enough for media, a panel that punches well above the Turbo price bracket. The 204-gram IP68 body is sealed against submersion, a spec many 2025 flagships match but few mid-rangers do. Design is understated performance hardware with a tidy camera module.

Performance

The Dimensity 8400 earns an everyday axis of 90 and a gaming axis of 47 in our model: MediaTek's all-big-core mid-flagship chip runs current titles at high settings and holds frame rates in sustained sessions better than its price suggests. Twelve gigabytes of RAM in the base trim keep multitasking open, and the efficient 4-nanometer-class design is why the large battery lasts as long as it does. This is the phone's reason to exist.

Camera

A 50-megapixel main sensor with optical stabilization leads the rear with an 8-megapixel ultrawide alongside, recording up to 4K60. The camera axis of 29 is the Turbo compromise: daylight shots are clean and stabilization makes handheld video usable, but low-light consistency and zoom are segments above this price. Buyers prioritizing optics should look at the K series instead.

Battery and charging

The 6550 mAh battery scores 71 on our battery axis, delivering up to two days of moderate use, and the 90 W charging scores 71, refilling it in under an hour. The endurance-plus-speed pairing with a 90-point everyday chip is the complete Turbo formula, and few 2025 phones at $400 assemble all three this coherently. Wireless charging is absent, as the line's tradition dictates.

Verdict

The Redmi Turbo 4 is one of the most balanced performance buys in our 2025 catalog: $400 new or about $273 used covers flagship-tier everyday responsiveness, IP68 sealing, a bright OLED and genuine two-day endurance, with the camera as the accepted trade. Software support records are not fully cataloged for this model, which tempers long-term planning slightly. For performance-per-dollar shoppers, it is a default recommendation.