Xiaomi

Xiaomi 15T 12 GB + 512 GB Black

Name: Xiaomi 15T 12 GB + 512 GB Black
Brand: Xiaomi

6.83" AMOLED screen, 5,500 mAh battery, 50 MP sensor and 67 W fast charging.

Manufacturer reference 4223711856

Colour Black

Black
Grey
Rose Gold

Internal storage capacity 512 GB

256 GB
512 GB

Energy class View the energy label (PDF)

79 /100 Its best score: the most storage, rated "very large" on its category’s scale.

See the price on Amazon This merchant’s price is not collected automatically: we would rather show none at all than a figure we could not date.

Duel it against another model Start a duel

1 merchant

offers it on this market

What the Xiaomi 15T 12 GB + 512 GB Black is worth

The Xiaomi 15T features 12 GB of RAM and 512 GB of internal storage, a 6.83" AMOLED screen at 120 Hz and a 5,500 mAh battery charged at 67 W. The main 50 MP sensor is backed by a 12 MP ultra wide-angle and a 50 MP telephoto, while the front camera reaches 32 MP. IP68 certification ensures water resistance up to 3 m.

With a battery score of 85/100 and storage rated 90/100, this model stands out for its ability to last through the day and accommodate a high volume of data. The screen scores 72/100, photo 70/100 and power 80/100, for an overall score of 79/100. The MediaTek Dimensity 8400-Ultra processor and LPDDR5X RAM at 8,533 Mbit/s support intensive use.

This smartphone is aimed at users seeking large storage and extended battery life, without sacrificing display fluidity or photo versatility. Dual Dolby Atmos speakers, Wi-Fi 6E and 5G connectivity complete a package designed for demanding daily use.

Its scores, criterion by criterion

Scores out of 100, calculated from the datasheet and compared with the market. The full method is public.

Storage Very large

512 GB · category median: 384 GB

Battery life Very long

5,500 mAh · category median: 4,500 mAh

Power Adequate

12 GB · category median: 8 GB

Screen Good

6.8 " · category median: 6.7 "

Camera Good

50 MP · category median: 50 MP

All offers

Amazon Price not collected View

Kalyneo only shows a price when it has been collected automatically from the merchant, together with its collection date. For merchants whose prices are not connected, the page links to the merchant without showing a price. No price is ever entered by hand.

Documents

What the manufacturer publishes about this model. Each document opens in a new tab.

Étiquette énergie PDF 65.8 KB Document in Français Fiche d’information produit PDF 61.4 KB Document in Français

Specifications

Design 5

Product colour Black

Screen protection Corning Gorilla Glass 7i

IP certification IP68

Water resistance depth 3 m

Vibration motor X-axis linear

Memory 2

RAM capacity 12 GB

RAM type LPDDR5X 8,533 Mbit/s

Storage media 2

Internal storage capacity 512 GB

Storage type UFS 4.1

Screen 11

Display diagonal 6.83"

Display resolution 2772 x 1280 pixels

Display brightness 3,200 nits

Maximum refresh rate 120 Hz

Panel type AMOLED

Pixel density 447 ppi

Colour depth 68 billion colours

Brightness dimming PWM up to 3,840 Hz

Touch sampling rate 480 Hz

Instant touch sampling rate 2,560 Hz

Contrast ratio 5000000:1

Camera 20

Rear camera resolution (numeric) 50 MP

Front camera resolution (numeric) 32 MP

Second rear camera resolution (numeric) 50 MP

Ultra wide-angle camera resolution 12 MP

Rear camera aperture number f/1.7

Second rear camera aperture number f/2.2

Front camera aperture number f/1.9

Main image sensor Light Fusion 800

Main sensor size 1/1.55"

Pixel size 2.0μm

Image stabilizer OIS

Digital zoom 60x

Video recording modes 4K 60 fps, 1080p, 720p

Slow motion mode Yes

Time lapse mode Yes

Night mode Yes

Dynamic range 13.2EV

Main equivalent focal length 23 mm

Ultra wide-angle equivalent focal length 15 mm

Telephoto equivalent focal length 46 mm

- 1

Battery capacity 5,500 mAh

Representation / rendering 3

Fast charging Yes

Fingerprint reader Yes

Face recognition Yes

Power 2

USB Type-C required charging power (max) 67 W

USB Type-C charging port Yes

Battery 2

Full charge time 50 minutes

Battery life cycles 1,600 cycles

Processor 5

Processor model MediaTek Dimensity 8400-Ultra

Manufacturing process 4 nm

CPU architecture 1x Cortex-A725 3.25 GHz, 3x Cortex-A725 3.0 GHz, 4x Cortex-A725 2.1 GHz

GPU Mali-G720

NPU NPU 880

Software 1

Operating system installed Xiaomi HyperOS 2

Weight and dimensions 4

Weight 194 g

Height 163.2 mm

Width 78.0 mm

Depth 7.50 mm

Network 8

Mobile network generation 5G

SIM card capability Dual SIM

SIM card type Nano-SIM, eSIM

Top Wi-Fi standard Wi-Fi 6E

Bluetooth Yes

Wi-Fi Yes

Bluetooth version 6.0

Near Field Communication (NFC) Yes

Navigation 6

GPS (satellite) Yes

Galileo Yes

GLONASS Yes

BeiDou Yes

Quasi-Zenith Satellite System (QZSS) Yes

Electronic compass Yes

Connectivity 1

USB connector type USB Type-C

Sensors 7

Proximity sensor Yes

Ambient light sensor Yes

Accelerometer Yes

Gyroscope Yes

Flicker sensor Yes

Colour temperature sensor Yes

Infrared emitter Yes

multimedia 2

Speakers Dual speaker

Audio Dolby Atmos, Hi-Res

Battery life 1

Energy efficiency class A

Power management 1

Energy efficiency scale A to G

Who this model suits

It’s for you if

Your first criterion is the storage: it happens to be its best score.

You want a good score on the battery life, above its category average.

You prefer a model tracked across several merchants, to buy at the right time.

Skip it if

Its lowest score is on the camera: skip it if that is decisive for you.

Frequently asked questions

Answers drawn from this model’s datasheet.

The Xiaomi 15T’s 5,500 mAh battery scores 85/100 for battery life, rated as very long. It significantly exceeds the market median of 4,500 mAh. Full charge takes 50 minutes with the 67 W fast charger, and the battery is guaranteed for 1,600 cycles.

The 6.83-inch AMOLED screen scores 72/100, rated as good. It displays a resolution of 2772 x 1280 pixels with 447 ppi density, 120 Hz refresh rate and peak brightness of 3,200 nits. It is protected by Corning Gorilla Glass 7i and covers 68 billion colours.

The 512 GB storage scores 90/100, rated as very large, and far exceeds the market median of 384 GB. The memory uses UFS 4.1 standard for fast transfers. Combined with 12 GB of LPDDR5X RAM, this configuration allows installing a very large number of apps and storing many photos and videos.