Technical sheet of Xiaomi Redmi K90 Ultra

Description

Xiaomi has always been known for pushing the boundaries of what is possible in the smartphone industry, and their latest release, the Xiaomi Redmi K90 Ultra, is no exception. This high-end device is a masterpiece of technology, boasting cutting-edge features and top-of-the-line specifications that are sure to impress even the most discerning tech enthusiasts. With its sleek design, powerful hardware, and impressive camera capabilities, the Xiaomi Redmi K90 Ultra is set to redefine the smartphone experience for users around the world.

Design & Materials

The Xiaomi Redmi K90 Ultra features a stunning AMOLED display that measures 6.83 inches, providing users with a vibrant and immersive viewing experience. The screen boasts a resolution of 1280x2772 (QHD), ensuring crystal-clear visuals that are sharp and detailed. With a refresh rate of 165 Hz, users can enjoy smooth and fluid animations, making scrolling and gaming a delight. The peak brightness of 3500 cd/m² and contrast ratio of 8000000:1 ensure that colors pop and blacks are deep and rich, while HDR10+ support guarantees a dynamic range that is second to none.

In terms of audio, the Xiaomi Redmi K90 Ultra doesn't disappoint, featuring stereo speakers that deliver clear and powerful sound. Whether you're watching movies, playing games, or listening to music, the audio quality on this device is sure to impress. The use of aluminium as the primary material for the phone's construction not only gives it a premium look and feel but also provides durability and strength. With a usable surface of 90%, the Xiaomi Redmi K90 Ultra offers a comfortable grip and a sleek profile that is easy to handle.

Hardware

Under the hood, the Xiaomi Redmi K90 Ultra is powered by the Qualcomm Snapdragon 8 Gen 5 processor, built on a cutting-edge 3nm architecture. This powerful chipset ensures smooth performance, lightning-fast speeds, and efficient multitasking capabilities. With up to 16GB of RAM (LPDDR5X) and up to 512GB of storage (UFS Storage 4.1), users can expect seamless operation and ample space for all their apps, games, photos, and videos. In fact, the Xiaomi Redmi K90 Ultra scored an impressive 3081184 on the AnTuTu benchmark, showcasing its raw processing power and performance.

Security is also a top priority on the Xiaomi Redmi K90 Ultra, with a fingerprint display ensuring that only authorized users can access the device. Additionally, the phone is equipped with a cooling system that helps dissipate heat during intense usage, ensuring that the device remains cool and performs optimally even under heavy loads.

Camera

The Xiaomi Redmi K90 Ultra comes equipped with a dual-camera setup that includes a 50.0MP Sony LYT-800 standard lens with an aperture of f/1.69, as well as an 8.0MP wide-angle lens with an aperture of f/2.2. These cameras work in tandem to capture stunning photos with incredible detail, clarity, and color accuracy. The phone also features a 16.0MP selfie camera, allowing users to take high-quality self-portraits and video calls with ease. With optical stabilization (OIS), 4K video recording, and even 8K video capabilities, the Xiaomi Redmi K90 Ultra offers a versatile and powerful camera system that is sure to impress photography enthusiasts.

Connectivity

When it comes to connectivity, the Xiaomi Redmi K90 Ultra leaves no stone unturned, offering Bluetooth 5.4, dual SIM support, NFC, WiFi 6 (802.11ax), GPS (L1+L5), and even an infrared port. Whether you need to connect to other devices, transfer files wirelessly, navigate using GPS, or control other electronic appliances, the Xiaomi Redmi K90 Ultra has you covered.

Battery

Last but certainly not least, the Xiaomi Redmi K90 Ultra is equipped with a massive 8550mAh battery that provides exceptional battery life, ensuring that users can go all day without needing to recharge. And when it is time to recharge, the phone supports fast charging up to 100.0W, allowing users to quickly top up their battery and get back to using their device. Additionally, the Xiaomi Redmi K90 Ultra supports reverse charging, meaning you can use your phone to charge other devices on the go.

Overall, the Xiaomi Redmi K90 Ultra is a true powerhouse of a smartphone that offers top-of-the-line features and specifications at a competitive price point. With its stunning design, powerful hardware, impressive camera capabilities, and long-lasting battery life, the Xiaomi Redmi K90 Ultra is sure to appeal to users who demand the very best from their smartphones. Whether you're a tech enthusiast, a photography buff, or just someone who appreciates a high-quality device, the Xiaomi Redmi K90 Ultra is a smartphone that is well worth considering.

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Brand

Brand Xiaomi
Aliases M332BF
Best Sellers
Smartphones by Xiaomi

Xiaomi Redmi K90 Ultra prices

Versions and prices
Xiaomi Redmi K90 Ultra China · 12GB · 256GB $ 574
Xiaomi Redmi K90 Ultra China · 12GB · 512GB $ 666
Xiaomi Redmi K90 Ultra China · 16GB · 256GB $ 681
Xiaomi Redmi K90 Ultra China · 16GB · 512GB $ 711

Release Date

Release dateJune 2026, 1 month ago
Launch priceCN¥ 2,999.00 ($ 444.86)

Related

Predecessor
Similar name

Design & Materials of Xiaomi Redmi K90 Ultra

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Structure

Size
77.9 mm162.9 mm8.2 mm
Print 3D Model
Weight 227 g
Usable surface 90 %
Materials Aluminium
Resistance certificates (dust, water) IP68, IP69 , IP66
Colors
Blue
Silver

Screen

Diagonal
6.83"
Type AMOLED
Samsung
Aspect Ratio 19.5:9
Resolution 1280 x 2772 px QHD
Density 447 ppi Very high density
Others
  • Hole-punch Notch
  • TUV Rheinland Low Blue Light
  • TÜV Rheinland Flicker-free Certified
  • Refresh rate 165 Hz
  • Touch sampling rate 480 Hz
  • Peak brightness - 3500 cd/m²
  • 8000000:1 contrast ratio
  • TÜV Rheinland Eye Comfort Certification
  • HDR10+
  • DCI-P3
  • DC dimming
  • 12 Bits panel (10-bit +2-bit FRC)
  • Dolby Vision
  • Scratch resistant
  • Capacitive
  • Multi-touch
  • Frameless
  • LTPO 2.0 (Low Temperature PolySilicon oxide)
Best big screen mobilesBest mobile phones with AMOLED screen

Performance & Hardware of Xiaomi Redmi K90 Ultra

Processor

Model Qualcomm Snapdragon 8 Gen 5
CPU 2x 3.8 GHz + 6x 3.32 GHz
Type Octa-Core
Nanometer 3 nm
Frequency 3.8 GHz
64 Bits Yes
More smartphones with Qualcomm Snapdragon 8 Gen processor

Graphics

GPU Adreno 829

RAM

RAM 12 GB
Type RAM LPDDR5X
More smartphones with 12GB RAM memory

Antutu

Score
3.081.184 Antutu v11
Overall performance better than 97% of devices

Storage

Capacity 256 GB
Type UFS Storage 4.1
SD Slot No
More smartphones with 256GB of internal storage

Security

Fingerprint Yes, in screen

Sensors

Fingerprint Yes
Proximity Yes
Light sensor Yes
Accelerometer Yes
Compass Yes
Gyroscope Yes
Hall Yes
RGB Yes
Vibration Motor Yes
Audio
Audio
  • Stereo Speakers
Others
Notifications LED --
Cooling system Yes
Gaming buttons No

Camera of Xiaomi Redmi K90 Ultra

Double rear camera

Standard
1
Resolution 50 Mpx
Aperture ƒ/ 1.69
Sensor Sony LYT-800
Type CMOS
Sensor size 1/1.43"
Pixel size 1.13 µm
Pixel Binning 1-4 (2x2)
2
Resolution
8 Mpx
Aperture
ƒ/ 2.2
Sensor
--
Type
CMOS BSI
Pixel size
--
Flash LED
Optical Stabilisation Yes
Slow Motion Video Yes, 240 fps
Features
  • UIS
  • Flicker sensor
  • Noise reduction
  • Time-Lapse
  • 4K Video
  • 8K Video
  • Digital zoom
  • Dual camera
  • Digital image stabilization
  • Optical Stabilization (OIS)
  • Autofocus
  • Touch focus
  • Manual focus
  • Phase detection autofocus (PDAF)
  • Laser autofocus (LAF)
  • Continuous shooting
  • Geotagging
  • Panorama
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
  • RAW
  • Night Mode
More smartphones with LYT-800 lens modelMore smartphones with LED

Selfie

Resolution 16 Mpx
Aperture Unknow
Sensor --
Type CMOS
Pixel size --
See more details
Frequency Checker

Network compatibility

Go to tool

Connectivity of Xiaomi Redmi K90 Ultra

Bands

5G n1 (2100), n3 (1800), n5 (850), n7 (2600), n8 (900), n28a (700), n38 (2600), n40 (2300), n41 (2500), n48 (3500), n66 (1700), n77 (3700), n78 (3500)
4G LTE B1 (2100), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B19 (800), B28a (700), B34 (TDD 2100), B38 (TDD 2600), B39 (TDD 1900), B40 (TDD 2300), B41 (TDD 2500), B42 (TDD 3500), B48 (TDD 3600), B66 (1700/2100)
3G B1 (2100), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
2G B3 (1800), B5 (850), B8 (900)

SIM card

TypeDual SIM Dual Standby (Nano SIM + Nano SIM)

SIM cards (MiniSIM) can be cut to MicroSIM, MicroSIM can be cut to NanoSIM and a SIM can even be cut to a NanoSIM (although not recommended). Download this SIM Cutting Template and forget about having to ask your operator for a new SIM...

Wi-Fi

Standards 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac, WiFi 6 (802.11ax) , WiFi 7 (802.11be)
Others
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display
  • Wi-Fi MiMO

Bluetooth

Version Bluetooth 5.4 LELow energy consumption
Profiles
  • A2DP (Advanced Audio Distribution Profile)
  • LE (Low Energy)
  • APT-x
  • LDAC
  • SBC
  • AAC

Navigation

Supports GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC System, QZSS (L1 + L5), Galileo (E1+E5a+E5b)

USB

Charging Yes
Mass Storage Yes
USB On-The-Go (OTG) Yes
USB Type C Yes

SAR

-- --
Others
NFC
Yes
Audio Jack
No
Radio FM
No
Computer sync
Yes
OTA sync
Yes
Infrared
Yes
Tethering.
Yes
VoLTE
Yes

Battery of Xiaomi Redmi K90 Ultra

Capacity
8550 mAh
Type Si-Carbon Li-Ion
Fast charge Yes , 100.0W
Others
  • Reverse charging
  • Non-removable
Extra
  • 22.5W Reverse Charging

Software of Xiaomi Redmi K90 Ultra

Software

Operating System Android 16
HyperOS 3.X (Android 16)
Google Services Without Google Mobile services
More smartphones with HyperOS 3.X (Android 16) operating system

User reviews about the Xiaomi Redmi K90 Ultra

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    Last update
    July 1, 2026
    State
    • Rumor
    • Presell
    • New
    • On Sale
    Latest changes
    • Version 1 month ago
    • Name, RAM 1 month ago
    • Storage 1 month ago
    • Camera, Sensor Model, Features 1 month ago
    • Width, Height, Thickness, Weight, Resolution, Resolution, Density, Aspect Ratio 1 month ago
    • Camera, Camera, Selfie Camera, Sensor Type, Selfie Camera, Selfie Camera, Photos, Photos 1 month ago
    • On Sale, Aliases, Inches, Capacity (mAh), Operating System 1 month ago
    9.3
    Ki Cost-effective
    Score
    • 8.9 Design & Materials
    • 8.8 Performance & Hardware
    • 7.8 Camera
    • 6.9 Connectivity
    • 8.7 Battery
    What is a Ki score?
    Ki is an automatic score based on the specifications and prices of devices. It is calculated using over 200 variables to rank smartphones, tablets and other devices from best to worst.
    How do we calculate the Ki?

    In this case, to determine the score we evaluate 5 general aspects:

    • Design and screen
    • Hardware and performance
    • Camera
    • Connectivity
    • Battery

    Once these 5 factors have been rated, we introduce the price variable. This means that any two devices with the same ratings get a different Ki score for quality vs price.

    Even a device objectively worse than another may have a higher Ki score if it has a better price.

    Does the Ki score change?

    The Ki varies as time goes by. As new devices with better specifications enter the market the Ki score of older devices will go down, always being compensated of their decrease in price.