Xiaomi Launches REDMI K90 with 2K 120Hz OLED Display and Massive 7100mAh Battery

Xiaomi Launches REDMI K90 with 2K 120Hz OLED Display and Massive 7100mAh Battery
Deepanker Verma October 23, 2025 Smartphone

Xiaomi has officially launched the REDMI K90 in China. The phone comes with a combination of high-end specifications and a large battery capacity.

The REDMI K90 features a glass back with a metal frame and a design optimized for one-handed use despite the large screen. Xiaomi uses an integrated cold-sculpting process for a seamless and premium feel. The phone is IP68 rated for dust and water resistance.

REDMI K90 features a 6.59-inch 2K AMOLED display with a 120Hz refresh rate, HDR10+, Dolby Vision support, DC dimming, and a peak brightness of 3500 nits. The display also supports a 2560Hz instantaneous touch sampling rate and 12-bit color.

The REDMI K90 is powered by the Snapdragon 8 Elite processor paired with up to 16GB of LPDDR5X RAM and up to 1TB of UFS 4.0 storage. Xiaomi has implemented a gas-liquid separation design for better heat dissipation. A 5300mm² LHP and three-step cooling system help keep the core temperatures under control even during heavy usage.

The phone comes with a versatile triple rear camera setup. The main camera uses a 50MP Light Fusion 800 sensor with OIS and Xiaomi AISP 2.0 to offer 13.2EV movie-level HDR. There is also an 8MP ultra-wide lens and a 50MP periscope telephoto camera with 2.5x optical zoom and a 10cm macro option. The front camera is 20MP.

For audio, the REDMI K90 includes dual 1115F ultra-linear speakers tuned by BOSE for immersive sound. It has USB Type-C audio and Hi-Res audio support. The phone has a 3D Ultrasonic fingerprint sensor and an infrared sensor. Connectivity options are 5G SA/NSA, Dual 4G VoLTE, Wi-Fi 7, Bluetooth 5.4, NFC, and multi-system GPS.

The phone packs a 7100mAh battery. It supports 100W fast charging and 22.5W reverse wired charging. The newly upgraded Xiaomi Surge P3 smart charging chip, combined with the G1 battery management chip ensures efficient charging and better battery management.

Pricing and Availability
The REDMI K90 is available in Light Purple, Aqua Blue, Black, and White. The pricing in China is as follows:

  • 12GB + 256GB – 2599 yuan
  • 16GB + 256GB – 2899 yuan
  • 12GB + 512GB – 3199 yuan
  • 16GB + 512GB – 3499 yuan
  • 16GB + 1TB – 3999 yuan

The phone is already on sale in China.

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About the Author: Deepanker Verma

Deepanker Verma is a well-known technology blogger and gadget reviewer based in India. He has been writing about Tech for over a decade.

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