Xiaomi Mi 9 vs Xiaomi Redmi 9
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Display
Size
Resolution
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
GPU
Adreno 640
Mali G52 MC2
RAM
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
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
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
Weight
the average is 6.2 oz (176 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
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
