Xiaomi Mi 9 vs Xiaomi Redmi 9

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$300 VIEW ON AMAZON
$141 VIEW ON AMAZON

Display

Size

6.4 inches
6.5 inches

Resolution

2340 x 1080 pixels, 19.5:9 ratio,
403 PPI
2340 x 1080 pixels, 19.5:9 ratio,
395 PPI

Technology

AMOLED
IPS LCD

Screen-to-body

85.23 %
83.27 %

Peak brightness

600 cd/m2 (nit)
 

Features

HDR video support, Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor
Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip

Qualcomm Snapdragon 855
MediaTek Helio G80

Processor

Octa-core, 2840 MHz, Kryo 485, 64-bit, 7 nm
Octa-core, 2000 MHz, Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm

GPU

Adreno 640
Mali G52 MC2

RAM

6GB LPDDR4
3GB LPDDR4

Internal storage

128GB, not expandable
32GB (eMMC 5.1)

Storage expansion

 
microSDXC

OS

Android (9.0 Pie), Xiaomi MI UI
Android

Battery

Capacity

3300 mAh
5020 mAh

Type

Not user replaceable
Not user replaceable

Battery life test results

 

Charging

Qualcomm Quick Charge 4+, Qi wireless charging
Qualcomm Quick Charge 3.0

Max charge speed

 
Wired: 18.0W

Camera

Rear

Triple camera
Quad camera

Main camera

48 MP (Sapphire crystal lens cover, Laser and PDAF, CMOS image sensor)
13 MP (PDAF)

Specifications

Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F2.2

Second camera

12 MP (Telephoto, Sapphire crystal lens cover, PDAF)
8 MP (Ultra-wide)

Specifications

Optical zoom: 2x; Aperture size: F2.2; Focal Length: 50 mm; Sensor size: 1/3.4"; Pixel size: 1 μm
Aperture size: F2.2

Third camera

16 MP (Ultra-wide, Sapphire crystal lens cover, PDAF)
5 MP (Macro)

Specifications

Aperture size: F2.2; Focal Length: 17 mm; Sensor size: 1/3"; Pixel size: 1 μm
Aperture size: F2.4

Fourth camera

 
2 MP (Depth information)

Video recording

3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (960 fps), 1280x720 (HD) (960 fps)
1920x1080 (Full HD)

Features

Continuous autofocus, EIS, Video calling, Video sharing
 

Front

20 MP (HDR)
8 MP (HDR)

Design

Dimensions

6.20 x 2.94 x 0.30 inches (157.5 x 74.67 x 7.61 mm)
6.43 x 3.03 x 0.36 inches (163.32 x 77.01 x 9.1 mm)

Weight

6.10 oz (173.0 g)
the average is 6.2 oz (176 g)
6.98 oz (198.0 g)
the average is 6.2 oz (176 g)

Materials

Back: Glass (Corning Gorilla Glass 5); Frame: Metal
 

Biometrics

In-screen fingerprint
2D Face unlock, Fingerprint (touch)

Colors

Black, Purple, Blue
Carbon gray, Sunset purple, Ocean green

Cellular

LTE (FDD)

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 20(800 DD), 28(700 APT)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)

LTE (TDD)

Bands 38(2600), 39(1900+), 40(2300)
Bands 38(2600), 40(2300), 41(2600+)

UMTS

850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed

LTE-A, HSPA, HSUPA
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

Yes
Yes

SIM type

Nano SIM
Nano SIM

HD Voice

Yes
Yes

VoLTE

Yes
Yes

Multimedia

Headphones

No 3.5mm jack
3.5mm jack

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features

aptX-HD
 

Screen mirroring

Wireless screen share
Wireless screen share

Radio

 
FM

Additional microphone(s)

 
for Noise cancellation

Connectivity & Features

Bluetooth

5.0
5.0

Wi-Fi

802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot
802.11 b, g, n; Wi-Fi Direct, Hotspot

USB

Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0

Features

Mass storage device, OTG, Charging, Headphones port
Charging

Location

GPS, A-GPS, Glonass, Galileo, BeiDou
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning

Sensors

Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass

Other

NFC, Infrared, VoIP, Tethering, Computer sync, OTA sync
NFC, Infrared

Phone features

Notifications

Haptic feedback, Music ringtones, Vibration
 

Other features

Voice dialing, Voice commands, Voice recording
 

Buyers information

In The Box

Case, 18W Charger, USB Type-C cable, Type-c to 3.5 mm adapter, SIM removal tool, Documentation
10W Charger, TPU case, USB Type-C cable, SIM eject tool, Warranty card, User guide
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