Xiaomi

POCO X8 12 GB + 256 GB White

Name: POCO X8 12 GB + 256 GB White
Brand: Xiaomi

Exceptional 8340 mAh battery and 6.83" AMOLED screen for multi-day endurance.

Manufacturer reference 4223718621

Colour White

Black
Orange
White

RAM capacity 12 GB

8 GB
12 GB

Energy class View the energy label (PDF)

75 /100 Its best score: the best battery life, rated "very long" on its category’s scale.

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What the POCO X8 12 GB + 256 GB White is worth

The POCO X8 packs 12 GB of RAM and 256 GB of storage in a design featuring a 6.83" AMOLED screen at 120 Hz. Its silicon-carbon 8340 mAh battery delivers autonomy far above the market median, complemented by 67 W fast charging.

With a battery score of 95/100, it stands out clearly in its category. The screen earns 72/100, the camera 70/100 thanks to the 50 MP sensor with OIS stabilization, and performance reaches 80/100. Storage remains limited (58/100) compared to better-equipped models. IP68 certification and Gorilla Glass Victus 2 protection enhance durability.

This smartphone suits those seeking exceptional autonomy without daily recharging, while enjoying a large, fluid screen and complete 5G connectivity. The Snapdragon 6s Gen 4 processor in 4 nm handles everyday tasks, though the most demanding applications will find their limits in this market segment.

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

8,340 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

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Documents

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

Étiquette énergie PDF 65.9 KB Document in Français Fiche d’information produit PDF 61.4 KB Document in Français

Specifications

Memory 1

RAM capacity 12 GB

Storage media 1

Internal storage capacity 256 GB

Design 1

Product colour White

Screen 11

Display diagonal 6.83"

Display resolution 2772 x 1280 pixels

Panel type AMOLED

Maximum refresh rate 120 Hz

Maximum display brightness (Outdoor) 3500 nits

Display brightness 1060 nits

Screen protection Corning Gorilla Glass Victus 2

Pixel density 447 PPI

Touch sampling rate 240 Hz

Colour depth 12-bit

Contrast ratio 8,000,000:1

Camera 9

Rear camera resolution (numeric) 50 MP

Front camera resolution (numeric) 16 MP

Rear camera aperture number 1.8

Image stabilizer Yes

Image stabilizer type OIS

Second rear camera resolution (numeric) 2 MP

Second rear camera aperture number 2.4

Front camera aperture number 2.4

Video recording modes 1080p

Processor 4

Processor model Snapdragon 6s Gen 4

Processor cores 8

Etching technology 4 nm

Maximum processor frequency 2.4 GHz

- 1

Battery capacity 8340 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

Network 8

Mobile network generation 5G

Top Wi-Fi standard Wi-Fi 5 (802.11ac)

Bluetooth Yes

SIM card capability Dual SIM

SIM card type Nano-SIM

Wi-Fi Yes

Bluetooth version 5.1

Near Field Communication (NFC) Yes

Connectivity 1

USB connector type USB Type-C

Navigation 6

GPS (satellite) Yes

GLONASS Yes

BeiDou Yes

Galileo Yes

Quasi-Zenith Satellite System (QZSS) Yes

Electronic compass Yes

Software 1

Operating system installed Xiaomi HyperOS 3

Weight and dimensions 4

Weight 223 g

Height 163.45 mm

Width 78.27 mm

Depth 8.6 mm

Sensors 5

Proximity sensor Yes

Ambient light sensor Yes

Accelerometer Yes

Gyroscope Yes

Infrared emitter Yes

multimedia 1

Speakers stereo

Resistance 1

Protection rating IP66, IP68

Audio 1

Audio technologies Dolby Atmos, Hi-Res

Battery 1

Battery type Silicon-carbon

Battery life 1

Energy efficiency class B

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 8340 mAh battery offers exceptional autonomy, well above the market median of 4500 mAh. This capacity allows you to go several days without recharging, depending on your usage.

Yes, this 6.83-inch AMOLED screen offers a resolution of 2772 x 1280 pixels, a 120 Hz refresh rate and a maximum brightness of 3500 nits outdoors, for optimal daily comfort.

The POCO X8 features IP66 and IP68 protection against water and dust, as well as a Corning Gorilla Glass Victus 2 screen to resist scratches and everyday shocks.