Exploring the secret tools that make the Redmi K90 Pro Max even better

The Redmi K90 Pro Max has already made headlines for its flagship specifications, but beneath the surface lies a set of hidden features that elevate the overall experience. Many of these are tucked away in settings or enhanced by Xiaomi’s new HyperOS software, offering smarter functionality and more control for power users. Here’s a look at some of the lesser-known tools that make this phone stand out.

One of the most interesting hidden features is the adaptive refresh rate system. While the display officially supports 120Hz, it can automatically switch between 30Hz, 60Hz, 90Hz, and 120Hz depending on what you’re doing. This dynamic scaling helps save battery power during static tasks like reading, while still delivering ultra-smooth motion in gaming or scrolling. It’s an invisible optimisation that boosts efficiency without sacrificing performance.

Another useful hidden tool is the advanced performance mode under the battery settings. This mode temporarily unlocks full chipset potential, pushing the Snapdragon 8 Gen 5 to deliver maximum clock speeds during heavy gaming or video editing. Once the session ends, the system reverts to balanced performance to avoid overheating. It’s ideal for users who want control over when the phone runs at its peak.

HyperOS also brings subtle yet powerful features for privacy and control. The “Private Safe” function allows you to lock specific files or photos with your fingerprint or face ID, keeping them separate from the main gallery. In addition, “Hidden Apps” lets you disguise certain apps entirely, visible only through a secret gesture or PIN. These features make it easy to protect personal data without needing third-party apps.

A lesser-known addition lies in the sound system, which has been fine-tuned by Bose. Beyond its 2.1-channel speaker setup, the K90 Pro Max includes a “Bass Boost Mode” hidden in the sound enhancement menu. Activating it subtly increases low-frequency response from the built-in sub-woofer, creating a richer, more cinematic audio experience whether you’re gaming or watching films.

For photography enthusiasts, the camera app hides several professional-grade tools. The “AI Image Engine” can recognise over 1,000 scenes and adjust tone, contrast, and brightness automatically. There’s also a “Motion Capture” feature buried in the Pro mode that improves moving-subject focus — perfect for sports or pets. Additionally, users can access a hidden “Ultra Night HDR” toggle that boosts detail in extreme low-light shots beyond what’s enabled by default.

HyperOS also introduces hidden gesture shortcuts that make everyday use faster. For instance, swiping down with three fingers takes a scrolling screenshot, while double-tapping the back panel can launch a custom app like the camera or flashlight. These shortcuts can be adjusted from the advanced gesture settings and are especially handy for one-handed use on the large 6.9-inch display.

The display itself also has a few under-the-radar features. There’s a “Professional Colour Mode” accessible from the display settings that allows manual adjustment of gamma, saturation, and white balance. This makes the K90 Pro Max ideal for creative users who edit photos or videos directly on the device. Additionally, the “Sunlight Enhancement” feature automatically raises contrast in outdoor conditions for better visibility without draining excessive power.

Battery management on the K90 Pro Max is also more intelligent than it appears. A hidden “Smart Charging” feature learns your charging habits and slows charging speed overnight to protect battery health. Over time, it adapts to your schedule, ensuring the battery remains in top condition even after extended use. Combined with the large 7,560mAh capacity, this feature extends long-term endurance significantly.

Gamers will also appreciate the “Game Turbo+” feature tucked inside the Game Space app. It provides advanced monitoring, real-time frame rate control, and touch response tuning. Users can even block notifications and calls automatically during gameplay. When paired with the phone’s powerful hardware and advanced cooling, this makes for one of the most refined mobile gaming experiences available.

Finally, Redmi has included a hidden “Voice Enhancer” option in the sound settings that optimises vocal clarity during calls and streaming. It subtly adjusts EQ levels to make speech more natural, even in noisy environments. Combined with its dual microphone setup, this feature ensures crystal-clear audio performance whether you’re on a video call or recording content.

Overall, the Redmi K90 Pro Max hides a surprising number of thoughtful enhancements beneath its surface. From performance and display optimisation to camera and audio upgrades, each of these features contributes to a more polished and personalised experience. It’s these quiet details that truly make the K90 Pro Max more than just another flagship — it’s a device built for discovery.