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Mi Mix 4 is the world's fastest charging phone with hidden camera to beat the Z Fold 3

By Daniel Petrov

Published: Aug 10, 2021, 9:26 AM

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Mi Mix 4 is the world's fastest charging phone with hidden camera to beat the Z Fold 3

It apparently took Xiaomi "three major generations, five years, sixty patents, a $77 million investment, and hundreds of engineers" to come up with the next major iteration of selfie cameras as found on the newly announced Mi Mix 4.

Its Mix line has been known from the onset to strive for the best screen-to-body ratios in the industry, moving from pop-up cameras through sliders, and culminating in what the world's largest cell phone company now calls CUP, or camera-under-panel.

Samsung, on the other hand, calls it UPC, or under-panel camera, Oppo calls it UDC (under-display camera) but who's counting when the Mi Mix 4 snapper has the highest resolution of them all selfie snappers tucked under a display so far.

With its whopping 20MP sensor it beats the Galaxy Z Fold 3's UPC camera 4MP one which, however, is rumored to be with giant 2 micron pixels that would collect much more of the restricted amount of light that passes through the screen layers on top than any individual CUP pixel of the Mi Mix 4.

Xiaomi Mi Mix 4 specs list fastest charging phone so far

We'll thus have to put both to the test before we make a camera quality verdict, but one thing is for certain, the Mi Mix 4 has achieved that great uninterrupted display look that Xiaomi has always strived for with the series. Xiaomi calls the CUP area 'almost invisible,' while the rest of the Mi Mix 4 specs, price, and release date are as follows:

6.7" FHD+ 120Hz curved display
Qualcomm’s newest Snapdragon 888 Plus processor with up to 3GHz top speeds
8GB/128GB or 12GB/256GB/512GB memory combos
108MP main camera sensor
5x periscope zoom camera
13MP ultrawide camera
4500mAh battery
Super fast 120W wired and 50W wireless charging
From ~$770
August 16 release date

That last spec caught our attention as, so far, only the Mi 10 Ultra was able to brag with 120W charging speeds. Its 23 minutes to full charge, however, now pale in comparison with the Mi Mix 4's claimed 15 minutes of charging fame.

Mi Mix 4 specs

The 50W wireless charging, on the other hand, reportedly goes zero to hero in under half an hour, too. We can't wait to put the claims to the test, marveling at the Mi Mix 4's true "all-screen" design allowing for that svelte ceramic beach unibody.

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Daniel, a devoted tech writer at PhoneArena since 2010, has been engrossed in mobile technology since the Windows Mobile era. His expertise spans mobile hardware, software, and carrier networks, and he's keenly interested in the future of digital health, car connectivity, and 5G. Beyond his professional pursuits, Daniel finds balance in travel, reading, and exploring new tech innovations, while contemplating the ethical and privacy implications of our digital future.