Xiaomi

REDMI 15C 4 GB + 128 GB Green

Name: REDMI 15C 4 GB + 128 GB Green
Brand: Xiaomi

XXL 6.9" screen, 6,000 mAh battery and 33 W fast charging for days of use.

Manufacturer reference 4223711580

Colour Green

Black
Blue
Green

Internal storage capacity 128 GB

128 GB
256 GB

Energy class View the energy label (PDF)

65 /100 Its best score: the best battery life, rated "very long" on its category’s scale.

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What the REDMI 15C 4 GB + 128 GB Green is worth

The REDMI 15C is a 4G smartphone from Xiaomi, featuring a 6.9" 120 Hz display, a 6,000 mAh battery and a configuration of 4 GB RAM (expandable to 8 GB) with 128 GB internal storage. It runs on a MediaTek Helio G81-Ultra eight-core processor under Xiaomi HyperOS 2.

Battery life scores 93/100, well above market median thanks to the 6,000 mAh capacity. The screen earns 73/100 with its 6.9" diagonal, and the camera scores 70/100 driven by the 50 MP rear sensor. However, the 4 GB RAM and 128 GB storage fall short of current standards, limiting power and storage capacity.

This model suits those who prioritize long battery life and a large screen for multimedia, without demanding high-end power. 33 W fast charging, Bluetooth 5.4 connectivity and IP64 certification complete a balanced package for everyday use without compromising on runtime.

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

6,000 mAh · category median: 4,500 mAh

Screen Good

6.9 " · category median: 6.7 "

Camera Good

50 MP · category median: 50 MP

Storage Limited

128 GB · category median: 384 GB

Power Low

4 GB · category median: 8 GB

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Documents

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

Étiquette énergie PDF 65.4 KB Document in Français Fiche d’information produit PDF 61.3 KB Document in Français

Specifications

Design 2

Product colour Green

Water and dust resistance IP64

Memory 2

RAM capacity 4 GB

Expandable RAM Up to 8 GB

Storage media 3

Internal storage capacity 128 GB

Compatible memory cards Expandable up to 1 TB

Memory type LPDDR4X + eMMC 5.1

Screen 12

Display diagonal 6.9"

Display resolution 1600 x 720 pixels

Maximum refresh rate 120 Hz

Touch sampling rate Up to 240 Hz

Maximum brightness 660 nits (typ), 810 nits (HBM)

Contrast ratio 1200:1

Colour gamut 83% NTSC

Colour depth 8-bit, 16.7 million colours

Low Blue Light certification Yes

Flicker Free certification Yes

Circadian Friendly certification Yes

Dimming DC

- 1

Battery capacity 6,000 mAh

Camera 5

Rear camera resolution (numeric) 50 MP

Front camera resolution (numeric) 8 MP

Rear camera aperture number f/1.8

Front camera aperture number f/2.0

Night mode Yes

Network 11

Mobile network generation 4G

Bluetooth Yes

SIM card capability Dual SIM

Wi-Fi Yes

Wi-Fi standards 2.4 GHz | 5 GHz

Bluetooth version 5.4

Near Field Communication (NFC) Yes

2G band GSM: 2/3/5/8

3G band WCDMA: B1/5/8

4G LTE FDD band B1/3/5/7/8/20/28

4G LTE TDD band B38/40/41

Software 1

Operating system installed Xiaomi HyperOS 2

Processor 5

Processor model MediaTek Helio G81-Ultra

Processor cores 8

Maximum CPU frequency 2.0 GHz

CPU architecture Cortex-A75 + Cortex-A55

GPU Mali-G52 MC2

Representation / rendering 4

Fast charging Yes

Fingerprint reader Yes

Face recognition Yes

Wireless charging Yes

Power 1

USB Type-C required charging power (max) 33 W

Battery 2

Time to charge to 50% 31 minutes

Reverse charging Yes

Weight and dimensions 4

Weight 211 g

Height 173.16 mm

Width 81.07 mm

Depth 8.20 mm

Sensors 4

Fingerprint reader type Side-mounted

Proximity sensor Yes

Ambient light sensor Yes

Accelerometer Yes

Navigation 5

Electronic compass Yes

GPS (satellite) Yes

GLONASS Yes

Galileo Yes

BeiDou Yes

Connectivity 2

USB connector type USB Type-C

Headphone jack 3.5 mm

Audio 3

Music playback Up to 82 hours

Bluetooth codec AAC/SBC/LDAC

FM radio Yes

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 screen, 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 power: skip it if that is decisive for you.

Frequently asked questions

Answers drawn from this model’s datasheet.

At 173.16 mm tall and 81.07 mm wide with a weight of 211 g, the REDMI 15C remains manageable but often requires both hands to reach the upper corners. Its XXL format prioritises visual comfort over compactness.

The 6,000 mAh capacity significantly exceeds the market median of 4,500 mAh, which explains the battery score of 93/100. The manufacturer claims up to 82 hours of music playback. The 33 W fast charging reaches 50% in 31 minutes.

The 4 GB of physical RAM explains the power score of 45/100. The system compensates with virtual expansion up to 8 GB, but this remains behind for intensive multitasking or demanding games compared to current standards.