Xiaomi Redmi K90 Pro Max

The Xiaomi Redmi K90 Pro Max has a non-folding, standard-form design measuring 163.3 mm tall, 77.8 mm wide, and 7.9 mm thick, with a total volume of 100.37 cm³ and a weight of 218 g. It carries an IP68 ingress protection rating, confirming full waterproof capability at depths of up to 1.5 m. The device does not feature a rugged build, so while it handles water exposure well under those rated conditions, it is not constructed to military-grade or reinforced durability standards.

The display is a touchscreen OLED/AMOLED panel measuring 6.9″ with a resolution of 1200 x 2608 px and a pixel density of 416 ppi. It operates at a 120Hz refresh rate and a 480Hz touch sampling rate, and supports HDR10, HDR10+, and Dolby Vision for broad high-dynamic-range coverage. The screen includes Always-On Display functionality and is protected by branded damage-resistant glass. There is no secondary screen, and the device does not include a second display panel of any kind.

The device is powered by the Qualcomm Snapdragon 8 Elite Gen 5 chipset, built on a 3 nm process with an 8-thread CPU configuration running at 2 x 4.6 GHz and 6 x 3.62 GHz using big.LITTLE and HMP technologies. It is paired with 16GB of DDR5 RAM at 5300 MHz and 1024GB of internal storage, with a maximum supported memory amount of 24GB and a peak memory bandwidth of 85.1 GB/s across two memory channels. The Adreno 830 GPU runs at 1200 MHz with 1536 shading units and supports up to two displays, along with DirectX 12, OpenGL 3.2, OpenGL ES 3.2, and OpenCL 3. Cache memory spans 192 KB at L1, 12 MB at L2, and 8 MB at L3, while ECC memory support and TrustZone are both present. Benchmark results place the chipset at an AnTuTu score of 4,350,000, a Geekbench 6 single-core score of 3,234, and a multi-core score of 10,059, with the SoC operating under a thermal design power of 8.2W and including integrated LTE and integrated graphics.

The main camera system uses three lenses, each at 50 MP, with apertures of f/1.7, f/2.4, and f/3, covering a focal range from 18 mm to 115 mm and offering 5x optical zoom alongside optical image stabilization. Autofocus options include phase-detection, laser, and touch autofocus, with continuous autofocus available during video recording. Video capture reaches up to 4320p at 30 fps, and slow-motion recording is supported, though HDR10 and Dolby Vision recording are not available. The rear camera includes a dual-tone LED flash with two LEDs, while manual controls extend to exposure, ISO, focus, and white balance — though manual shutter speed is absent. The system supports RAW capture, burst mode, in-camera panoramas, timelapse, and HDR mode, but does not offer 360° panorama, 3D recording, BSI or CMOS sensor configurations, or an RGB flash. The 32 MP front camera has an aperture of f/2.2 and is a single-lens setup positioned on the front bezel rather than under the display, with no front-facing flash.

The device runs Android 16, a free and open-source platform that supports multiple user accounts and includes on-device machine learning alongside offline voice recognition and voice commands. Privacy controls cover clipboard warnings, location options, and camera/microphone access management, though Mail Privacy Protection and cross-site tracking blocking are not present. Customization options include theme customization, dynamic theming, dark mode, and an extra dim mode, while productivity features extend to split-screen multitasking, Picture-in-Picture, full-page screenshots, a media picker, sharing intents, customizable notifications, notification permission controls, widgets, and the ability to play games while they download. The OS also supports Live Text, app offloading, a child lock, battery health monitoring, phone tracking, and app tracking blocking. Direct OS updates from the vendor are not available, and the device does not support Quick Start, Wi-Fi password sharing, focus modes, or use as a PC.

The device houses a rechargeable 7560 mAh battery with a built-in level indicator, though it is not removable. Wired fast charging is supported at 100W, while wireless charging operates at 50W, and reverse wireless charging allows the device to share power with other devices at 22.5W.

The device includes stereo speakers but omits a 3.5 mm headphone jack and does not feature a built-in radio. Wireless audio codec support is absent across the board, with no aptX, aptX HD, aptX Adaptive, aptX Lossless, or LDAC available.

The device supports 5G connectivity with a cellular module, dual SIM slots, and Wi-Fi across four standards — Wi-Fi 4, 5, 6, and Wi-Fi 7 (802.11be) — alongside Bluetooth 5.4 and NFC. Wired connectivity is handled via USB Type-C at USB 3.2, with download speeds reaching 10,000 Mbits/s and upload speeds up to 3,500 Mbits/s, though there is no HDMI output and no external memory slot. Sensors include a fingerprint scanner, gyroscope, accelerometer, compass, GPS with Galileo support, and an infrared sensor, while a barometer, heart rate monitor, iris scanner, and 3D facial recognition are all absent. The device does not support ANT+, DLNA, motion tracking, optical tracking, satellite SOS, crash detection, and does not include a stylus or built-in projector.

The device includes a video light for use during video recording, while the display is flat rather than curved and uses neither sapphire glass nor an e-paper panel.