Xiaomi Mi 5S With 5.15-Inch 1080P Display, 4GB RAM, Snapdragon 821 SoC Announced

Xiaomi has announced Mi 5S smartphone officially, the company’s latest flagship has been introduced at an event in China today, as promised. Here is everything you need to know about the new Mi series smartphone.


Now that the Xiaomi’s Mi 5S hides a fingerprint reader under its glass build body and those fans of Xiaomi should be no surprise to know that this dual-SIM device which has ditched the glass body to become fully metallic on the back – packs a Qualcomm’s latest and greatest Snapdragon 821 chipset, similar to what found on ASUS ZenFone 3 Deluxe. Nevertheless, it offers not only improved computational performance but also super fast tri-band 4G carrier aggregation. Bonus you get is inside the Mi 5S, it features up to 128GB of fast UFS 2.0 storage plus up to 4GB of LPDDR4 RAM.

Talking about the new under-glass ultrasonic fingerprint scanner on the front of Mi 5S. At today’s launch event, Xiaomi CEO Lei Jun has took his time to explain the perits and challenges of integrating ultra-sonic fingerprint technology into this initiative. The Chinese company Xiaomi had actually been exploring this option since October 2014 while planning for the Mi5, in that hope to avoid the need to cut a hole on the glass for the fingerprint sensor. It was slightly cheaper to make, more aesthetically pleasing and more durable. While Ultrasonic also tolerates dirty fingers better than its capacitive counterpart. To be safe, Xiaomi actually prepared two prototypes for the Mi 5 back then: One with a hole on the glass for the conventional capacitive reader, and the other without a hole courtesy of an earlier version of the ultrasonic sensor.

Although Mi 5 originally went with the capacitive button solution, as it wasn’t until July this year when the ultrasonic sensor finally became mature for mass production. Hence its debut on the Mi 5s happened. Xiaomi still carved out a little dent on the 2.5D glass screen to help guide our fingers, even though it’s an under-glass solution – which should come in handy if we want to unlock the phone as simple as we’re pulling it out of our pockets.

Additionally, there’s another highlight of the Mi 5S and that is its main camera setup. Borrowed from the likes of Nexus 5X, Nexus 6P and HTC 10, the Mi 5S takes the large-pixel approach by using Sony’s 1/2.3-inch IMX378 CMOS sensor, offering a lower 12-megapixel still resolution but better sensitivity using large 1.5um pixel sites. The camera also comes with an f/2.0 aperture, a dual-tone LED flash, phase detection autofocus, auto HDR and supports 4K video recording at 30fps. On the other side of the Mi 5S, you will find a 4-megapixel selfie camera with f/2.0 aperture, 80-degree wide-angle capture and real-time beautification at up to 1080p recording.

It has USB Type-C port and packs a 3200mAh battery with Qualcomm Quick Charge 3.0. Measures in at 8.25mm thick and has a full metal unibody design and slightly thicker than the Mi5. Once again speaking about the under-glass ultrasonic fingerprint scanner that scans your fingerprints in a split-second.

Xiaomi Mi 5S Specifications

  • 5.15-inch (1920×1080 pixels) Full HD display, 600 nits brightness, 94.4% NTSC color gamut, 1500:1 contrast ratio
  • 2.15GHz Quad-Core Snapdragon 821 64-bit processor with Adreno 530 GPU
  • 3GB LPDDR4 RAM with 64GB (UFS 2.0) internal storage / 4GB LPDDR4 RAM with 128GB (UFS 2.0) internal storage
  • Android 6.0 Marshmallow with MIUI 8
  • Dual SIM (nano + nano)
  • 12MP rear camera with dual-tone LED flash, f/2.0 aperture, Sony IMX378 1/2.3-inch sensor, PDAF, 4K video recording, 120fps slomo at 720p
  • 4MP front-facing camera with 2um pixels, f/2.0 aperture, 80-degree wide-angle lens, 1080p video recording
  • Ultrasonic fingerprint scanner, 3.5mm audio jack
  • Dimensions:145.6x 70.3x 8.25 mm; Weight: 145 g
  • 4G VoLTE, WiFi 802.11ac dual-band (MU-MIMO ), Bluetooth 4.2, GPS/GLONASS/Beidou, NFC, USB Type-C
  • 3200mAh (typical) / 3100mAh (min ) battery with Qualcomm Quick Charge 3.0


The Mi 5S is coming to your hands in Dark Grey and Golden colors with Glossy brushed metal finish and the Silver and Rose Gold colors with frosted Matte finish. For those reside in China, you’ll be able to pre-order on September 29th, with the base model (64GB storage + 3GB RAM) will set you back at 1,999 Yuan (about $300) and the top-end model (128GB/4GB RAM) costs 2299 Yuan (almost $345). There’s also a 79 yuan ($12) pixel cover case, but it’s a rip-off of HTC’s Dot View case.