Xiaomi Redmi K90 VS Xiaomi Redmi K90 Pro Max

Both the Xiaomi Redmi K90 and Xiaomi Redmi K90 Pro Max are waterproof with an IP68 rating, meaning they can handle submersion in water up to a depth of 1.5 meters. This makes them similarly resilient to water-related damage.

The Redmi K90 weighs 206 g, which is slightly lighter than the 218 g of the K90 Pro Max. The Pro Max is also marginally larger, with a thickness of 7.9 mm compared to the K90's 8 mm, and it stands taller at 163.3 mm versus the K90's 157.5 mm. The K90 Pro Max is also wider at 77.8 mm, while the K90 measures 75.3 mm.

In terms of volume, the K90 Pro Max has a larger overall volume at 100.37 cm³, compared to the K90's 94.88 cm³. Both models, however, lack a rugged build and cannot be folded.

Both the Xiaomi Redmi K90 and Xiaomi Redmi K90 Pro Max feature OLED/AMOLED displays, offering vibrant colors and deep contrasts. The K90 has a screen size of 6.59″, while the K90 Pro Max boasts a larger 6.9″ display, providing a more expansive viewing experience.

In terms of pixel density, the K90 offers 419 ppi, slightly higher than the 416 ppi of the K90 Pro Max. Both displays have a resolution of 1156 x 2510 px on the K90 and 1200 x 2608 px on the K90 Pro Max, with the latter achieving a slightly higher pixel count for a potentially sharper display.

Both models share a 120Hz refresh rate and a 480Hz touch sampling rate, ensuring smooth and responsive interactions. They also support HDR10, HDR10+, and Dolby Vision for enhanced color and contrast. Additionally, both devices feature Always-On Display functionality and have branded damage-resistant glass, but neither has a secondary screen nor differs in touchscreen capabilities.

Both the Xiaomi Redmi K90 and K90 Pro Max come with 1024GB of internal storage and 16GB of RAM, ensuring ample space and performance for demanding tasks. They are powered by Qualcomm Snapdragon 8 Elite series chipsets, with the K90 featuring the Snapdragon 8 Elite and the K90 Pro Max using the Snapdragon 8 Elite Gen 5, a slight generational difference.

CPU speeds are similar, with the K90 running at 2 x 4.32 GHz and 6 x 3.53 GHz, while the K90 Pro Max has a slightly higher CPU speed of 2 x 4.6 GHz and 6 x 3.62 GHz. Both devices have 8 threads and use big.LITTLE technology for efficient processing. The K90 Pro Max also has a faster GPU clock speed at 1200 MHz compared to the K90’s 1100 MHz.

Both devices score the same on Geekbench 6, with identical multi-core and single-core results of 10059 and 3234, respectively. Other shared specifications include a 3 nm semiconductor size, 5300 MHz RAM speed, support for 64-bit architecture, integrated LTE, and ECC memory support. The GPU in both devices is the Adreno 830, with 1536 shading units and support for DirectX 12, OpenGL 3.2, and OpenCL 3. They also both support up to 24GB of maximum memory and feature a TDP of 8.2W. Both models offer dual-display support and use multithreading, with identical L1, L2, and L3 cache sizes (192 KB, 12 MB, and 8 MB, respectively).

The Xiaomi Redmi K90 and K90 Pro Max both feature a multi-lens main camera setup, with the K90 offering 50 MP, 50 MP, and 8 MP lenses, while the K90 Pro Max uses 50 MP, 50 MP, and 50 MP lenses. The K90’s main camera has wide apertures of f/1.9, f/2.2, and f/2.2, compared to the K90 Pro Max's slightly wider apertures of f/1.7, f/2.4, and f/3.0.

For the front camera, the K90 has a 20 MP sensor, while the K90 Pro Max steps up with a 32 MP front camera. Both devices have phase-detection autofocus for photos, continuous autofocus for video, and support for slow-motion video recording. Both also feature a dual-tone LED flash with 2 flash LEDs and can record video at 4320 x 30 fps. Both cameras also support raw photo capture, manual exposure, and manual ISO adjustments.

In terms of zoom, the K90 offers optical zoom up to 2.5x, whereas the K90 Pro Max offers a more powerful 5x optical zoom. Both devices have features like laser autofocus, serial shot mode, touch autofocus, manual white balance, and the ability to create panoramas in-camera. Neither device supports HDR10 or Dolby Vision video recording. While both lack a front-facing LED flash, neither offers 3D photo/video recording capabilities or a front-facing camera under the display.

Both the Xiaomi Redmi K90 and K90 Pro Max run Android 16 and share a wide array of features in the operating system. Both devices have clipboard warnings, location privacy options, camera/microphone privacy options, and theme customization. They can block app tracking and support dynamic theming, media picking, and customizable notifications. Additionally, both devices allow for playing games while downloading, have dark mode, and offer an extra dim mode for better visibility in low-light settings.

Key features such as on-device machine learning, notification permissions, PiP (Picture-in-Picture), and full-page screenshots are present in both models. They also support split-screen multitasking, offline voice recognition, voice commands, and the ability to track the current position of the device. Both have child lock features, widgets, and the ability to offload apps, ensuring a robust set of tools for usability and privacy.

The K90 and K90 Pro Max are also identical in terms of privacy and accessibility features, such as multi-user support, sharing intents, and Mail Privacy Protection (which is not supported by either model). Neither supports Quick Start or gets direct OS updates, and neither device has Wi-Fi password sharing or focus modes. Both are free and open-source, maintaining a strong commitment to user customization and privacy.

The Xiaomi Redmi K90 and K90 Pro Max have similar battery features, with both devices supporting 100W fast charging and reverse wireless charging at 22.5W. The K90 is equipped with a 7100 mAh battery, while the K90 Pro Max has a slightly larger 7560 mAh battery, offering a higher capacity for extended use.

Neither device has a removable battery, but both have a rechargeable battery and a battery level indicator to help manage power. The K90 does not support wireless charging, whereas the K90 Pro Max does include wireless charging capabilities, adding an extra convenience for charging without cables.

Overall, both devices offer a range of charging options, including fast and reverse wireless charging, with the main distinction being the larger battery and wireless charging support on the K90 Pro Max.

Both the Xiaomi Redmi K90 and K90 Pro Max lack a 3.5 mm audio jack, meaning they rely on wireless or USB-C audio solutions. Both devices are equipped with stereo speakers, offering a dual-speaker setup for a richer audio experience. Neither model supports aptX, LDAC, aptX HD, aptX Adaptive, or aptX Lossless, which are typically used for high-quality wireless audio streaming.

Additionally, neither the K90 nor the K90 Pro Max features a built-in radio. This means both devices focus on digital audio experiences over traditional FM radio.

Overall, both devices share similar audio capabilities, including stereo speakers and a lack of wired audio options, but neither model offers the higher-end audio codecs or radio functionality.

Both the Xiaomi Redmi K90 and K90 Pro Max support 5G connectivity, ensuring fast mobile data speeds. They both feature the same Wi-Fi capabilities, supporting Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), and Wi-Fi 7 (802.11be). Additionally, both phones offer dual SIM card support, Bluetooth version 5.4, and USB Type-C with USB 3.2, providing a comprehensive range of connectivity options.

In terms of additional features, both models come with NFC, GPS, a compass, a gyroscope, an infrared sensor, an accelerometer, and a cellular module. They also share identical download speeds of 10000 MBits/s and upload speeds of 3500 MBits/s. Each device has a fingerprint scanner for security, but neither has a barometer, HDMI output, 3D facial recognition, or an iris scanner.

Both phones support Galileo for navigation and lack motion tracking, optical tracking, or a built-in projector. Neither device supports ANT+ nor has a heart rate monitor, and both models do not offer emergency SOS via satellite or crash detection.

Both the Xiaomi Redmi K90 and K90 Pro Max are equipped with a video light, making them capable of capturing better video quality in low-light conditions. Neither model features sapphire glass for the display, indicating they do not have the additional durability typically associated with this material. Additionally, both phones have flat displays; neither the K90 nor the K90 Pro Max has a curved display. Both devices also lack an e-paper display, which is generally used for low-power, high-contrast screens.

Overall, the two devices share identical miscellaneous features, offering a video light but missing out on sapphire glass, curved displays, and e-paper technology.