The Redmi K90 Pro Max, launched as the flagship model in Redmi’s K90 series, represents a significant push into the premium smartphone segment.1 The device combines top-tier performance hardware with advanced multimedia and camera capabilities, often at a competitive price point.2
Powerhouse Performance and Cooling
At the core of the Redmi K90 Pro Max is the powerful Qualcomm Snapdragon 8 Elite Gen 5 processor, built on a 3$3 \text{nm}$ fabrication process.4 This chipset is paired with high-speed memory options, including up to 5$16 \text{GB}$ of LPDDR5x RAM and up to 6$1 \text{TB}$ of UFS 4.1 storage.7 To manage the thermal demands of this flagship-level performance, the phone incorporates a massive vapor chamber cooling system. Furthermore, it includes a dedicated “AI independent display chip,” the D2, designed to handle intelligent display management and deliver hardware-level super-resolution and gaming enhancements, such as dynamic interpolation technology for smoother motion.8
Immersive Display and Premium Audio
The K90 Pro Max features an expansive 9$6.9$-inch LTPO AMOLED display with a 10$120 \text{Hz}$ refresh rate and a resolution of 11$2608 \times 1200$ pixels.12 The screen offers exceptional visual quality with 13$12$-bit color depth (supporting 14$68.7$ billion colors), a peak brightness of 15$3500 \text{ nits}$, and supports high-end viewing standards like HDR10+ and Dolby Vision.16 For comfortable viewing, especially in low light, it supports full DC dimming and a minimum brightness of just 17$1 \text{ nit}$.18 A key highlight is the audio system, which features Bose-tuned 19$2.1$-channel stereo speakers, including a dedicated independent woofer.20 This is a first for a Redmi device and is engineered to provide a richer, more immersive sound experience with enhanced bass.21
Versatile and Advanced Camera System
The camera setup on the K90 Pro Max marks an upgrade for the Redmi series.22 It boasts a triple-rear camera system, all with 23$50 \text{MP}$ resolution.24 The main camera uses a 25$1/1.31$-inch sensor—the same high-dynamic-range sensor found in the Xiaomi 26$17$—and includes Optical Image Stabilization (OIS).27 The ultra-wide camera is also 28$50 \text{MP}$.29 Notably, the phone introduces Redmi’s first-ever periscope telephoto camera, a 30$50 \text{MP}$ sensor with OIS that offers 31$5\text{x}$ optical zoom and up to 32$10\text{x}$ lossless zoom.33 This system is capable of 34$8\text{K}$ video recording.35 The front camera is a 36$32 \text{MP}$ sensor.37
Enduring Battery and Fast Charging
To power its flagship specifications, the Redmi K90 Pro Max is equipped with a substantial 38$7560 \text{ mAh}$ silicon-carbon battery, a capacity that is among the largest in its segment.39 The device supports 40$100 \text{W}$ wired fast charging, capable of a full charge in under half an hour.41 It also introduces 42$50 \text{W}$ wireless charging—a first for a Redmi phone—and 43$22.5 \text{W}$ reverse charging (both wired and wireless) for charging accessories.44 The phone is fully compatible with 45$100 \text{W}$ PPS chargers and incorporates dual power management chips (Xiaomi Surge P3 and G2) for optimized charging efficiency.46
Design and Connectivity
The Redmi K90 Pro Max features a glass-and-aluminum build with an IP68 rating for dust and water resistance.47 Color options include a denim blue finish and a golden white panel.48 Connectivity is future-proof, with support for 49$5\text{G}$ networks, Wi-Fi 50$7$, and Bluetooth 51$5.4$.52 It runs on Android 53$16$ with Xiaomi’s HyperOS 54$3$ overlay.55 The phone also includes an ultrasonic in-display fingerprint sensor for security and is also available in a special Champion Edition in partnership with Lamborghini Squadra Corse.56