Xiaomi 15S Pro: Leaked Certification Hints at Return of UWB and Blazing-Fast Charging

A recent certification slip-up may have just confirmed two major upgrades in Xiaomi’s next flagship phone. According to regulatory filings, the Xiaomi 15S Pro is bringing back ultra-wideband (UWB) technology—a feature that fans haven’t seen since the MIX 4. On top of that, the upcoming device looks set to offer an eye-popping 90W fast charging, making it one of the quickest-charging smartphones on the market.

The Leak That Gave It Away

China’s Ministry of Industry and Information Technology recently cleared a new Xiaomi model, listed as 25042PN24C. Buried in the documentation? A direct mention of UWB radio transmission capabilities. In plain terms, that means the phone can deliver pinpoint spatial awareness and enhanced device-to-device connectivity.

That same model also appeared in January’s 3C certification records. There, it was listed as supporting 90W maximum fast charging—well above the industry standard. While Xiaomi hasn’t officially named the device, all signs point to this being the 15S Pro.

UWB: Back and More Relevant Than Ever

If you’re wondering why UWB matters, here’s the short version: it’s smart tech that allows devices to “understand” their surroundings with centimeter-level accuracy. Xiaomi first introduced this in the MIX 4 with its one-finger connection feature, but the tech vanished in later flagships.

Now, it’s making a return—and not by coincidence.

A Play for the Automotive Space

The timing isn’t random. Xiaomi recently confirmed its leap into the automotive industry, and UWB plays a big role in that transition. Most modern cars already support UWB for digital key functionality and secure entry systems.

By adding this feature to its phones, Xiaomi isn’t just improving connectivity; it’s laying the groundwork for seamless integration between its mobile devices and future vehicles. Think automatic unlocking as you approach the car, personalized driver settings, and smarter in-car controls. It’s the kind of cross-platform synergy that Apple and Samsung have long aimed for—and Xiaomi wants in.

What’s Still Under Wraps

While these certifications confirm a couple of standout features, plenty of details are still missing. We don’t yet know what processor the 15S Pro will use, how the camera system will be configured, or whether Xiaomi has any surprises in the display or design departments.

Based on Xiaomi’s usual launch cadence, more official teasers and leaks should surface soon. Stay tuned—things are just starting to heat up.