Redmi K20 vs Xiaomi Mi 9

Bluetooth
Bluetooth5.0, A2DP, LE, aptX HD
Bluetooth5.0, A2DP, LE, aptX HD
Bluetooth
OSN
OSNAndroid
OSN
OSN

Height
Height6.17 inches
Height6.20 inches
Height
Width
Width2.93 inches
Width2.94 inches
Width
Thickness
Thickness0.35 inches
Thickness0.30 inches
Thickness
Weight
Weight191 g
Weight173 g
Weight
Color
ColorCarbon black, Red flame, Glacier blue
ColorLavender Violet, Ocean Blue, Piano Black
Color
Build
BuildFront/back glass, aluminum frame
BuildBack glass (Gorilla Glass 5), aluminum frame (7000 series)
Build
Color
ColorGlacier blue
ColorPiano Black
Color

Screen Size
Screen Size6.39 inches
Screen Size6.39 inches
Screen Size
Display Type
Display TypeAMOLED capacitive touchscreen
Display TypeSuper AMOLED capacitive touchscreen
Display Type
Display Resolution
Display Resolution1080 x 2340 pixels
Display Resolution1080 x 2340 pixels
Display Resolution
Pixel Density
Pixel Density403 ppi
Pixel Density403 ppi
Pixel Density
Aspect Ratio
Aspect Ratio19.5:9
Aspect Ratio
Aspect Ratio
Protection
ProtectionCorning Gorilla Glass 5
ProtectionCorning Gorilla Glass 6
Protection
Screen to Body Ratio
Screen to Body Ratio86.1%
Screen to Body Ratio85.20%
Screen to Body Ratio
Screen Resolution
Screen Resolution1080X2340
Screen Resolution
Screen Resolution
Display Size
Display Size6.25 inch to 6.5 inch
Display Size6.25 inch to 6.5 inch
Display Size
Display Type
Display Type
Display TypeSuper AMOLED
Display Type

OS
OSAndroid 9.0 (Pie) MIUI 10
OSAndroid 9.0 (Pie) MIUI 10
OS
GPU
GPUAdreno 618
GPUAdreno 640
GPU
RAM
RAM6 GB RAM
RAM8 GB RAM
RAM
Cores
Cores8
Cores
Cores
Chipset GP
Chipset GPQualcomm SDM730 Snapdragon 730 (8 nm)
Chipset GPQualcomm SDM855 Snapdragon 855 (7 nm)
Chipset GP
CPU
CPUOcta-core (2x2.2 GHz Kryo 470 Gold 6x1.8 GHz Kryo 470 Silver)
CPUOcta-core (1x2.84 GHz Kryo 485 3x2.42 GHz Kryo 485 4x1.8 GHz Kryo 485)
CPU

RAM/Internal Storage
RAM/Internal Storage256 GB, 8 GB RAM or 64/128 GB, 6 GB RAM
RAM/Internal Storage64/128 GB, 6/8 GB RAM
RAM/Internal Storage
Storage
Storage128 GB
Storage128 GB
Storage
Expandable Memory
Expandable MemoryNo
Expandable MemoryNo
Expandable Memory

Triple Camera
Triple Camera48 MP, f/1.8, 26mm (wide), 1/2, 0.8 micron|8 MP, f/2.4, 53mm (telephoto), 1/4, 1.12 micron, 2x optical zoom|13 MP, f/2.4, 12mm (ultrawide), 1/3, 1.12 micron
Triple Camera48 MP, f/1.8, 27mm (wide), 1/2, 0.8 micron|12 MP, f/2.2, 54mm (telephoto), 1/3.6, 1.0 micron, 2x optical zoom|16 MP, f/2.2, 13mm (ultrawide), 1/3.0, 1.0 micron
Triple Camera
Autofocus
AutofocusPDAF
AutofocusLaser/PDAF
Autofocus
Back Camera Video
Back Camera Video2160p30fps, 1080p30/120/240fps, 1080p960fps
Back Camera Video2160p30/60fps, 1080p30/120/240fps, 1080p960fps
Back Camera Video
Back Camera Features
Back Camera FeaturesDual-LED flash, HDR, panorama
Back Camera FeaturesDual-LED flash, HDR, panorama
Back Camera Features

Single Camera
Single CameraMotorized pop-up 20 MP, f/2.2, 0.8 micron
Single Camera20 MP, f/2.0, 0.9 micron
Single Camera
Front Camera Video
Front Camera Video1080p30fps
Front Camera Video1080p30fps
Front Camera Video
Front Camera Features
Front Camera FeaturesHDR
Front Camera FeaturesHDR
Front Camera Features

HeadPhone Jack
HeadPhone JackYes
HeadPhone JackYes
HeadPhone Jack
Loudspeaker
LoudspeakerYes
LoudspeakerYes
Loudspeaker
Audio Features
Audio Features24-bit/192kHz audio|Active noise cancellation with dedicated mic
Audio FeaturesActive noise cancellation with dedicated mic
Audio Features

Battery Capacity
Battery Capacity4000 mAh
Battery Capacity3300 mAh
Battery Capacity
User Replaceable
User ReplaceableNon-removable
User ReplaceableNon-removable
User Replaceable
Charging
ChargingFast battery charging 18W
ChargingFast battery charging 27W (Quick Charge 4)|Fast wireless charging 20W
Charging
Battery Capacity
Battery Capacity4000 mAh
Battery Capacity3200 mAh to 3400 mAh
Battery Capacity
Battery Type
Battery TypeLi-Po
Battery TypeLi-Po
Battery Type

WLAN
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot
WLAN
GPS
GPSYes, with A-GPS, GLONASS, GALILEO, BDS
GPSYes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS
GPS
Radio
RadioYes
RadioNo
Radio
USB
USB2.0, Type-C 1.0 reversible connector, USB On-The-Go
USB2.0, Type-C 1.0 reversible connector, USB On-The-Go
USB
NFC
NFCYes
NFCYes
NFC
SIM
SIMDual SIM (Nano-SIM, dual stand-by)
SIMDual SIM (Nano-SIM, dual stand-by)
SIM
Network Support
Network SupportGSM / HSPA / LTE
Network SupportGSM / CDMA / HSPA / LTE
Network Support

Sensors
SensorsFingerprint (under display), accelerometer, gyro, proximity, compass
SensorsFingerprint (under display), accelerometer, gyro, proximity, compass
Sensors

Announced On
Announced On2019, May
Announced On2019, February
Announced On
Status
StatusAvailable. Released 2019, June
StatusAvailable. Released 2019, March
Status