Features
REDMI K90 Ultra is a next-gen performance flagship designed for extreme gaming, long endurance, and high-refresh immersive visuals — combining a Snapdragon 8 Elite platform with advanced thermal engineering and a massive battery system.
Powered by the Snapdragon 8 Elite 3nm flagship chipset, it delivers desktop-level CPU and GPU performance with ultra-efficient power management, enabling sustained high-FPS gaming and AI-driven system optimization.
Features a large 6.83″ flat-display with a 165Hz ultra-high refresh rate, delivering ultra-smooth motion, ultra-fast touch response, and vivid HDR visual performance for gaming and media consumption.
A massive 8550 mAh battery ensures multi-day endurance, supported by 100W ultra-fast charging, bypass charging, and intelligent power routing for sustained gaming performance without overheating.
Built with an integrated active cooling fan system and large vapor chamber cooling, REDMI K90 Ultra maintains stable frame rates during long gaming sessions, reducing thermal throttling even under extreme load.
Camera system is tuned for everyday versatility, featuring a 50MP Light-Hunter 800 main sensor with OIS and an ultra-wide lens, delivering sharp detail, balanced dynamic range, and reliable low-light performance.
With IP66, IP68, and IP69 protection, Wi-Fi 7 connectivity, and dual stereo speakers tuned for immersive audio, REDMI K90 Ultra is built as a full-performance ecosystem device — not just a smartphone.
Things To Know
This is an Chineses edition REDMI K90 Ultra smartphone, supports English and Chinese languages.
Supports Google Mobile Services (GMS), Google Play Store, and OTA system updates.
Smartphone runs Xiaomi HyperOS 3 with long-term software optimization for gaming performance and thermal stability.
Specifications
| Item | Specification |
|---|---|
| Processor | Qualcomm Snapdragon 8 Elite (3nm flagship platform) |
| GPU | Adreno flagship GPU (high-performance gaming architecture) |
| RAM | 12GB / 16GB LPDDR5X |
| Storage | 256GB / 512GB UFS 4.1 |
| Display |
6.83″ AMOLED Display 165Hz refresh rate 480Hz touch sampling rate HDR10+ / Dolby Vision support Ultra-high brightness mode |
| Battery | 8550mAh battery |
| Charging | 100W wired fast charging, 22.5W reverse charging, bypass charging support |
| Cooling System | Built-in active cooling fan + large vapor chamber thermal system |
| Rear Camera |
50MP main camera (Light-Hunter 800, OIS) 8MP ultra-wide camera |
| Front Camera | 20MP selfie camera |
| Video Recording | Up to 8K recording, 4K HDR video, slow motion support |
| Network | 5G SA/NSA, Dual Nano-SIM support |
| Bands |
5G ：n1/n3/n5/n7/n8/n28/n66/n38/n40/n41/n48/n77/n78 4G：FDD-LTE：B1/B3/B4/B5/B7/B8/B19/B28/B66 TDD-LTE：B34/B38/B39/B40/B41/B42/B48 3G：WCDMA：B1/B4/B5/B6/B8/B19 2G：GSM：B3/B5/B8 |
| Connectivity | Wi-Fi 7, Bluetooth 5.4, NFC, USB-C |
| Audio | Dual stereo speakers, immersive gaming audio tuning |
| Protection Rating | IP66 / IP68 / IP69 dust and water resistance |
| OS | Xiaomi HyperOS 3 |
FAQ
Q: REDMI K90 Ultra work in USA and Canada ?
A: Yes, REDMI K90 Ultra work in Canada and USA, but not every band was available, PLEASE check band list.
Q: The REDMI K90 Ultra model comes with Google Play Store?
A: Yes, REDMI K90 Ultra support install Google Play Store app
Q: I wanted to know whether it comes with the charger and adapter
A: Yes, REDMI K90 Ultra come with Official original charger and Free EU / AU plug !
Q: I want bought the REDMI K90 Ultra, Does the phone working in the USA / Canada on T-Mobile? English and Google Gapps?
A: Yes, REDMI K90 Ultra Chinese version HyperOS is compatible with networks in the USA and Canada. However, it's important to double-check with your network service provider to ensure compatibility, as well as to review the phone's supported bands (5G, 4G FDD LTE, and 3D WCDMA) listed in the specifications. Additionally, the phone comes with English language support and is compatible with Google Play Store services.
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