Xiaomi Redmi 9

Brand and model

Brand	Xiaomi
Model	Redmi 9
Model alias	M2004J19G

Design

Width	77.01 mm 7.701 cm 0.253 ft 3.032 in
Height	163.32 mm 16.332 cm 0.536 ft 6.43 in
Thickness	9.1 mm 0.91 cm 0.03 ft 0.358 in
Weight	198 g 0.44 lbs 6.98 oz
Volume	114.45 cm³ 6.95 in³
Colors	Carbon Grey Sunset Purple Ocean Green
Body materials	Plastic

SIM card

SIM card type	Nano-SIM (4FF — fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm)
Number of SIM cards	2
Features	Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)

Networks

GSM	GSM 850 MHz (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2)
CDMA	CDMA 800 MHz (BC0)
W-CDMA	W-CDMA 850 MHz (B5) W-CDMA 900 MHz (B8) W-CDMA 1700 MHz (B4) W-CDMA 1900 MHz (B2) W-CDMA 2100 MHz (B1)
LTE	LTE-FDD 700 MHz (B28) LTE-FDD 800 MHz (B20) LTE-FDD 850 MHz (B5) LTE-FDD 900 MHz (B8) LTE-FDD 1700 MHz (B4) LTE-FDD 1800 MHz (B3) LTE-FDD 1900 MHz (B2) LTE-FDD 2100 MHz (B1) LTE-FDD 2600 MHz (B7) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38)

Mobile network technologies and bandwidth

Mobile network technologies

UMTS (384 kbit/s ) EDGE GPRS HSPA+ LTE Cat 12 (102.0 Mbit/s , 603.0 Mbit/s ) EV-DO Rev. A (1.8 Mbit/s , 3.1 Mbit/s )

Operating system

Operating system (OS)

MIUI V12 (Android 10)

System on Chip (SoC)

SoC	MediaTek Helio G80
Process technology	12 nm
CPU	2x 2.0 GHz Cortex-A75, 6x 1.8 GHz Cortex-A55
CPU bits	64 bit
Instruction set	ARMv8-A
CPU cores	8
CPU frequency	2000 MHz
GPU	ARM Mali-G52 2EEMC2
GPU frequency	950 MHz
RAM capacity	3 GB 4 GB
RAM type	LPDDR4X
RAM channels	Double channel
RAM frequency	2133 MHz

Storage

Storage	32 GB 64 GB
	eMMC 5.1

Memory cards

Types

microSD microSDHC microSDXC

Display

Type/technology	IPS
Diagonal size	6.53 in 165.86 mm 16.59 cm
Width	2.74 in 69.51 mm 6.95 cm
Height	5.93 in 150.6 mm 15.06 cm
Aspect ratio	2.167:1
Resolution	1080 x 2340 pixels
Pixel density	395 ppi 155 ppcm
Color depth	24 bit 16777216 colors
Display area	83.49 %
Other features	Capacitive Scratch resistant
	2.5D curved glass screen Corning Gorilla Glass 3 400 cd/m² 70% NTSC 1500:1

Sensors

Sensors

Proximity Light Accelerometer Compass Gyroscope Fingerprint

Rear camera

Sensor type	CMOS (complementary metal-oxide semiconductor)
Aperture	f/2.2
Field of view	75.2 ° (degrees)
Flash type	LED
Image resolution	4160 x 3120 pixels 12.98 MP
Video resolution	1920 x 1080 pixels 2.07 MP
Video FPS	30 fps
Features	Autofocus Digital zoom Digital image stabilization Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Macro mode Phase detection autofocus (PDAF)
	Secondary rear camera — 8 MP (ultra-wide) Sensor model — OmniVision OV8856 (#2) GalaxyCore GC8034 version also available(#2) Sensor size — 1/4″ (#2) Pixel size — 1.12 μm (#2) Aperture size — f/2.2 (#2) Angle of view — 118° (#2) Focal length (35 mm equivalent) — 13 mm (#2) Third rear camera — 2MP (depth-sensing) Sensor model — GalaxyCore GC02M1 (#3) Sensor size — 1/5″ (#3) Pixel size — 1.75 μm (#3) Aperture size — f/2.4 (#3) Fourth rear camera — 5MP (macro) Pixel size — 1.12 μm (#4) Aperture size — f/2.4 (#4)

Front camera

Aperture	f/2
Field of view	77.8 ° (degrees)
Image resolution	3264 x 2448 pixels 7.99 MP
Video resolution	1920 x 1080 pixels 2.07 MP
Video FPS	30 fps
Features	Face unlock HDR Face detection

Audio

Speaker	Loudspeaker Earpiece
	Smart PA Dual microphones with active noise cancellation 1216 linear speaker Vibration motor

Radio

Radio

Yes

Tracking / Positioning

Tracking / Positioning

GPS A-GPS GLONASS Galileo Beidou

Wi-Fi

Wi-Fi

802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) Wi-Fi Hotspot Wi-Fi Direct Wi-Fi Display

Bluetooth

Version	5.0
Features	A2DP (Advanced Audio Distribution Profile) EDR (Enhanced Data Rate) HID (Human Interface Profile) LE (Low Energy)

USB

Connector type	USB Type-C
Version	2.0
Features	Charging Mass storage On-The-Go

Headphone jack

Headphone jack

Yes

Connectivity

Connectivity	Computer sync OTA sync Infrared Tethering NFC VoLTE ViLTE VoWiFi
	NFC market dependent

Browser

Browser

HTML HTML5 CSS 3

Audio file formats/codecs

Audio file formats/codecs

AAC (Advanced Audio Coding) AAC+ / aacPlus / HE-AAC v1 AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga) AMR-WB (Adaptive Multi-Rate Wideband, .awb) aptX / apt-X aptX HD / apt-X HD / aptX Lossless eAAC+ / aacPlus v2 / HE-AAC v2 FLAC (Free Lossless Audio Codec, .flac) MIDI MP3 (MPEG-2 Audio Layer II, .mp3) OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus) WMA (Windows Media Audio, .wma) WAV (Waveform Audio File Format, .wav, .wave) LDAC

Video file formats/codecs

Video file formats/codecs

3GPP (3rd Generation Partnership Project, .3gp) AVI (Audio Video Interleaved, .avi) DivX (.avi, .divx, .mkv) H.263 H.264 / MPEG-4 Part 10 / AVC video H.265 / MPEG-H Part 2 / HEVC MKV (Matroska Multimedia Container, .mkv .mk3d .mka .mks) MP4 (MPEG-4 Part 14, .mp4, .m4a, .m4p, .m4b, .m4r, .m4v) VC-1 Xvid

Battery

Capacity	5020 mAh
Type	Li-Ion
Charger output power	5 V / 2 A 9 V / 2 A
Quick charge technology	Qualcomm Quick Charge 3.0
Features	Fast charging Non-removable

Additional features

Additional features

P2i splash-proof nano-coating