Xiaomi Redmi K80 Ultra

The Xiaomi Redmi K80 Ultra has a non-folding, non-rugged body measuring 163.1 mm tall, 77.9 mm wide, and 8.2 mm thick, with a total volume of approximately 104.19 cm³ and a weight of 219 g. It carries an IP68 rating, confirming full waterproof protection against dust and prolonged water immersion under standard conditions.

The Xiaomi Redmi K80 Ultra features a 6.83″ OLED/AMOLED touchscreen with a resolution of 1280 x 2772 px and a pixel density of 447 ppi, backed by a 144Hz refresh rate and a 480Hz touch sampling rate for responsive input. Typical brightness sits at 1800 nits, and the 5,000,000:1 contrast ratio reflects the panel's deep black capability. The display is covered by Gorilla Glass Victus and supports HDR10, HDR10+, and Dolby Vision, while the Always-On Display function keeps glanceable information visible at all times. There is no secondary screen on this device.

The Xiaomi Redmi K80 Ultra is driven by the MediaTek Dimensity 9400 Plus system-on-chip, built on a 3 nm process and configured with an 8-thread CPU running at speeds of 1 x 3.73, 4 x 3.3, and 3 x 2.4 GHz using big.LITTLE architecture with HMP support. Graphics are handled by the integrated Immortalis G925 GPU clocked at 1,300 MHz. The device ships with 16 GB of LPDDR5 RAM operating at 10,667 MHz — with support for up to 24 GB — alongside 1,024 GB of internal storage, and delivers a maximum memory bandwidth of 85.3 GB/s backed by a 12 MB L3 cache. It achieves an AnTuTu score of 2,821,344, a Geekbench 6 single-core result of 2,874, and a multi-core result of 8,969. The SoC integrates LTE, supports 64-bit processing and multithreading, and does not support ECC memory.

The Xiaomi Redmi K80 Ultra uses a dual-lens rear camera system combining 50 MP and 8 MP sensors, both based on CMOS technology without back-illuminated sensor design, and supported by optical image stabilization and a dual-tone LED flash with two LEDs. Autofocus options include phase-detection and touch autofocus for photos, as well as continuous autofocus during video recording, though laser autofocus is absent. Main camera video recording reaches up to 4320 x 30 fps (8K), with slow-motion recording also supported, while HDR10 and Dolby Vision recording are not available. Manual controls cover exposure, ISO, focus, and white balance, but manual shutter speed is not included; additional shooting modes include burst, panorama, and timelapse. The front camera is a single-lens 20 MP unit without an LED flash or under-display placement. Neither optical zoom nor RAW capture, 360-degree panorama, RGB flash, or 3D recording are supported on this device.

The Xiaomi Redmi K80 Ultra runs Android 15 and includes a broad set of privacy controls, covering clipboard warnings, location privacy options, and camera/microphone access management, though Mail Privacy Protection and cross-site tracking blocking are not present. App tracking can be blocked, and on-device machine learning is supported. The interface offers theme customization, dynamic theming, dark mode, and an extra dim mode, while focus modes and Quick Start are not available. Productivity features include split-screen multitasking, Picture-in-Picture, full-page screenshots, a media picker, Live Text, sharing intents, customizable notifications, and the ability to play games while they download. The system supports widgets, app offloading, a child lock, multi-user accounts, offline voice recognition, voice commands, and device tracking, but does not support Wi-Fi password sharing or PC mode. OS updates are not delivered directly from the vendor, and the platform is noted as free and open source.

The Xiaomi Redmi K80 Ultra houses a 7,410 mAh rechargeable, non-removable battery with a built-in level indicator. It supports 100W fast charging, though wireless charging is not available.

The Xiaomi Redmi K80 Ultra includes stereo speakers and supports aptX, aptX HD, and aptX Adaptive for Bluetooth audio, though aptX Lossless and LDAC are not available. The device does not have a 3.5 mm headphone jack and lacks a built-in radio.

The Xiaomi Redmi K80 Ultra supports 5G connectivity and accommodates two SIM cards, with a maximum download speed of 7,300 Mbit/s. Wireless networking covers Wi-Fi 4, 5, 6, and 7, and Bluetooth 5.4 is on board alongside NFC. The USB Type-C port operates at USB 2.0, and there is no external memory slot, HDMI output, or DLNA certification. Onboard sensors include a gyroscope, accelerometer, compass, GPS with Galileo support, infrared sensor, and a fingerprint scanner, while a barometer, heart rate monitor, iris scanner, and 3D facial recognition are absent. Crash detection, emergency SOS via satellite, ANT+, motion tracking, optical tracking, and a built-in projector are also not featured, and no stylus is included.

The Xiaomi Redmi K80 Ultra includes a video light for use during video recording, while its display is flat rather than curved and uses neither sapphire glass nor e-paper technology.