SCORE
Blue
SIlver
Black
Ultra
Short Overview
PROS
- 1 Stunning 165Hz AMOLED display with high peak brightness
- 2 Top-tier Snapdragon 8 Elite performance with built-in cooling fan
- 3 Massive 8550 mAh battery with ultra-fast 100W charging
- 4 IP68/IP69 dust and water resistance
CONS
- 1 No 3.5mm headphone jack
- 2 No expandable storage via microSD card
- 3 Relatively heavy at 227g
- 4 Ultrawide camera resolution is modest compared to main sensor
Prices
Questions and opinions
It features an incredibly smooth 165Hz AMOLED display.
Yes, it supports ultra-fast 100W wired charging.
Yes, it boasts an IP68/IP69 rating for dust and water resistance.
It is powered by the Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) chipset.
The Xiaomi Redmi K90 Ultra steps into the competitive smartphone arena as a high-performance device aiming to deliver a premium experience. Launched in mid-2026, it promises top-tier specifications for users seeking advanced technology and robust capabilities. This review delves into what makes the K90 Ultra stand out, from its immersive display to its powerful internals and impressive battery life.
The K90 Ultra presents a sophisticated design with a glass front and an aluminum frame, giving it a premium feel. Its significant 227g weight suggests a solid build, further reinforced by an IP68/IP69 rating, ensuring it’s dust-tight and resistant to water immersion and high-pressure jets—a welcome feature for durability. The phone features a large 6.83-inch AMOLED display with a sharp 1280×2772 pixel resolution and an incredibly smooth 165Hz refresh rate. With support for 68 billion colors, Dolby Vision, HDR Vivid, and HDR10+, this screen is engineered for an exceptional visual experience, capable of reaching an impressive 9500 nits peak brightness for media consumption.
Under the hood, the Redmi K90 Ultra is powered by the cutting-edge Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) chipset, featuring an octa-core CPU with high-frequency Oryon V2 Phoenix cores and an Adreno 830 GPU. This combination, coupled with 12GB or 16GB of RAM and UFS 4.1 storage options up to 1TB, ensures seamless multitasking, demanding gaming, and efficient app handling. Running on Android 16 with HyperOS 3, the software experience should be fluid and feature-rich. A notable inclusion is the built-in cooling fan, suggesting Xiaomi has prioritized sustained performance under heavy load.
For photography, the K90 Ultra is equipped with a dual-camera system led by a 50MP main sensor with an f/1.7 aperture, PDAF, and OIS for stable, detailed shots. It’s complemented by an 8MP ultrawide lens, offering versatility for capturing broader scenes. Features like a color spectrum sensor, LED flash, HDR, and panorama enhance the photography experience. Video recording capabilities are impressive, supporting up to 8K at 30fps and 4K at 60fps, with gyro-EIS for stabilization across various resolutions. The front-facing 20MP wide camera handles selfies and video calls, recording at 1080p.
One of the K90 Ultra’s standout features is its substantial 8550 mAh Si/C Li-Ion battery, promising extended usage times. Charging is exceptionally fast with 100W wired support, including 100W PPS and PD3.0, allowing for quick power-ups. It also offers 22.5W reverse wired charging, which can be useful for powering other devices. Connectivity options are comprehensive, including Wi-Fi 7, Bluetooth 5.4 with advanced audio features like LHDC 5.0 and Auracast, a full suite of GPS systems, and NFC. Stereo speakers tuned by Bose, featuring a 2.1 system with a woofer and Hi-Res audio support, promise a rich sound experience despite the absence of a 3.5mm headphone jack.
The Xiaomi Redmi K90 Ultra is clearly positioned for users who demand uncompromised performance, an exceptional display, and robust battery life. Its advanced cooling, durable build, and high-resolution cameras make it suitable for power users, gamers, and multimedia enthusiasts alike. While the lack of a 3.5mm jack might be a minor inconvenience for some, the overall package offers a compelling high-end smartphone experience.