Xiaomi

REDMI 17 4 GB + 256 GB Black

Name: REDMI 17 4 GB + 256 GB Black
Brand: Xiaomi

Record 7,500 mAh battery and 6.9" screen, but limited to 4 GB RAM.

Manufacturer reference 4223717665

Colour Black

Black
Blue
Green
Violet

Internal storage capacity 256 GB

128 GB
256 GB

Energy class View the energy label (PDF)

68 /100 Its best score: the best battery life, rated "very long" on its category’s scale.

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What the REDMI 17 4 GB + 256 GB Black is worth

The REDMI 17 4 GB + 256 GB Black is a mid-range smartphone from Xiaomi, powered by a MediaTek Helio G91-Ultra processor and 256 GB storage expandable up to 2 TB. Its 6.9" screen displays 1600 x 720 pixels with a 120 Hz refresh rate, protected by Gorilla Glass 7i.

Battery life earns the top score of 95/100 with its 7,500 mAh capacity, well above the market median of 4,500 mAh. The screen scores 73/100 and the 50 MP rear camera reaches 70/100. However, 4 GB RAM limits performance to 45/100, and 256 GB storage falls short of the 384 GB median.

This model suits users seeking very long battery life and a large screen for everyday tasks, but 4 GB RAM may slow heavy apps or intensive multitasking. Weighing 232 g with IP64 rating, it focuses on endurance.

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

7,500 mAh · category median: 4,500 mAh

Screen Good

6.9 " · category median: 6.7 "

Camera Good

50 MP · category median: 50 MP

Storage Limited

256 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 64.3 KB Document in Français Fiche d’information produit PDF 59.7 KB Document in Français

Specifications

Design 2

Product colour Black

Resistance IP64

Memory 3

RAM capacity 4 GB

Memory extension Up to 8 GB

Memory type LPDDR4X + eMMC 5.1

Storage media 2

Internal storage capacity 256 GB

Compatible memory cards Expandable up to 2 TB

Screen 11

Display diagonal 6.9"

Display resolution 1600 x 720 pixels

Maximum refresh rate 120 Hz

Touch sampling rate 240 Hz

Display brightness 675 nits typ., 825 nits HBM

Contrast ratio 1400:1

Colour gamut 83% NTSC

Colour depth 8-bit, 16.7 million colours

Protection Corning Gorilla Glass 7i

TÜV Rheinland certifications Low Blue Light, Flicker Free, Circadian Friendly

Dimming DC dimming

Camera 10

Rear camera resolution (numeric) 50 MP

Front camera resolution (numeric) 8 MP

Rear camera aperture number f/1.8

Rear camera lens 5P lens

Front camera aperture number f/2.05

Video recording modes 1080p at 30 fps, 720p at 30 fps

Night mode Yes

Time lapse mode Yes

Rear camera functions FilmCamera, HDR Mode, Portrait Mode, Time-lapse, Dual Camera Recording, Document Mode

Front camera functions HDR Mode, Soft Light Ring, Portrait Mode, Time-lapse, Night Mode, Dual Camera Recording

Processor 6

Processor model MediaTek Helio G91-Ultra

Processor cores 8

CPU architecture Cortex-A75+Cortex-A55

Max. CPU frequency 2 GHz

Process 12 nm

GPU Mali-G52 MC2

- 1

Battery capacity 7,500 mAh

Representation / rendering 3

Fast charging Yes

Fingerprint reader Yes

Face recognition Yes

Power 1

USB Type-C required charging power (max) 45 W

Charge 1

Wired reverse charging 22.5 W

Software 1

Operating system installed Xiaomi HyperOS 3

Network 11

Bluetooth Yes

SIM card type 3-in-2 hybrid SIM + microSD

Wi-Fi Yes

Wi-Fi standards 2.4 GHz, 5 GHz

Bluetooth version 5.4

Bluetooth codecs AAC / SBC / LDAC

Near Field Communication (NFC) Yes

GSM bands 2/3/5/8

WCDMA bands B1/5/8

LTE FDD bands B1/3/5/7/8/20/28

LTE TDD bands B38/40/41

Navigation 5

GPS (satellite) Yes

GLONASS Yes

Galileo Yes

BeiDou Yes

Electronic compass Yes

Connectivity 3

USB connector type USB Type-C

Headphone jack 3.5 mm

FM radio Yes (with headphone jack)

Security 1

Fingerprint sensor type Side-mounted fingerprint sensor

Sensors 4

Ambient light sensor Yes

Proximity sensor Yes

Proximity sensor type Virtual proximity sensor

Accelerometer Yes

Weight and dimensions 4

Weight 232 g

Height 170.12 mm

Width 78.42 mm

Depth 8.8 mm

Video 1

Video encoding HEVC

Playback 2

Supported video formats MP4, 3GP, MKV, WEBM, MPEG2, H.263, MPEG4, H.264, VP8, VP9, AV1

Supported audio formats AAC, M4A, MP4, 3GP, AMR, MID, MIDI, IMY, MP3, OGG, WAV, FLAC, MKV(opus)

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 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.

Yes, with 7,500 mAh, this REDMI 17 scores 95/100 for battery life. The market median stands at 4,500 mAh, nearly 40% less. This battery enables extended use without frequent recharging.

Yes, the REDMI 17 accepts a microSD card up to 2 TB via the 3-in-2 hybrid SIM slot. RAM can also be extended up to 8 GB through dynamic expansion technology.

The score reflects the 4 GB of RAM, well below the market median of 8 GB. The MediaTek Helio G91-Ultra with 12 nm process remains suitable for everyday tasks, but may show limitations on demanding apps or heavy multitasking.