Xiaomi

Xiaomi 15T 12 GB + 256 GB Grey

Name: Xiaomi 15T 12 GB + 256 GB Grey
Brand: Xiaomi

6.83" AMOLED screen, 5,500 mAh battery and 67 W fast charging for extended use.

Manufacturer reference 4223711857

Colour Grey

Internal storage capacity 256 GB

256 GB
512 GB

Energy class View the energy label (PDF)

73 /100 Its best score: the best battery life, rated "very long" 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 + 256 GB Grey is worth

The Xiaomi 15T features a 6.83" AMOLED screen displaying 2772 x 1280 pixels with 3,200 nits brightness and 120 Hz refresh rate. Its 5,500 mAh battery earns a battery life score of 85/100, well above market median. The 67 W fast charging completes a full cycle in 50 minutes, and the manufacturer states 1,600 battery cycles.

For photography, the 50 MP Light Fusion 800 main sensor with OIS stabilisation and f/1.7 aperture pairs with a 12 MP ultra wide-angle and a 50 MP telephoto lens. The front camera delivers 32 MP. The 4 nm MediaTek Dimensity 8400-Ultra processor, combined with 12 GB LPDDR5X RAM and 256 GB UFS 4.1 storage, achieves a performance score of 80/100.

IP68 certified with water resistance up to 3 m, the 194 g body integrates dual SIM (Nano-SIM and eSIM), 5G, Wi-Fi 6E, Bluetooth 6.0 and contactless payment. Corning Gorilla Glass 7i screen protection, dual Dolby Atmos speakers and energy efficiency class A round out the package.

Its scores, criterion by criterion

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

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

Storage Limited

256 GB · category median: 384 GB

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 Grey

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 256 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 battery life: it happens to be its best score.

You want a good score on the power, 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 storage: skip it if that is decisive for you.

Frequently asked questions

Answers drawn from this model’s datasheet.

The 5,500 mAh battery offers an autonomy rated 85/100, qualified as very long, well above the market median of 4,500 mAh. It guarantees 1,600 charge cycles and fully recharges in 50 minutes thanks to 67 W fast charging.

Yes, the 6.83-inch AMOLED screen reaches 3,200 nits of maximum brightness, making it perfectly readable in direct sunlight. It displays 120 Hz refresh rate and 68 billion colours with Corning Gorilla Glass 7i protection.

The Xiaomi 15T has IP68 certification, which means it is dust resistant and can be immersed up to 3 m deep. This protection allows outdoor use without fear of splashes or rain.