Redmi K20 vs Samsung Galaxy M40 vs OnePlus 6T

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

Height
Height6.17 inches
Height6.11 inches
Height6.20 inches
Width
Width2.93 inches
Width2.91 inches
Width2.94 inches
Thickness
Thickness0.35 inches
Thickness0.31 inches
Thickness0.32 inches
Weight
Weight191 g
Weight168 g
Weight185 g
Color
ColorCarbon black, Red flame, Glacier blue
ColorSweater Blue, Midnight Blue
ColorThunder Purple, Mirror Black, Midnight Black
Build
BuildFront/back glass, aluminum frame
BuildFront glass, plastic body
BuildFront/back glass, aluminum frame
Color
ColorGlacier blue
ColorMidnight Blue
ColorMidnight Black

Screen Size
Screen Size6.39 inches
Screen Size6.3 inches
Screen Size6.41 inches
Display Type
Display TypeAMOLED capacitive touchscreen
Display TypePLS TFT capacitive touchscreen
Display TypeOptic AMOLED capacitive touchscreen
Display Resolution
Display Resolution1080 x 2340 pixels
Display Resolution1080 x 2340 pixels
Display Resolution1080 x 2340 pixels
Pixel Density
Pixel Density403 ppi
Pixel Density409 ppi
Pixel Density402 ppi
Aspect Ratio
Aspect Ratio19.5:9
Aspect Ratio19.5:9
Aspect Ratio
Protection
ProtectionCorning Gorilla Glass 5
ProtectionCorning Gorilla Glass (unspecified)
ProtectionCorning Gorilla Glass 6
Screen to Body Ratio
Screen to Body Ratio86.1%
Screen to Body Ratio84.9%
Screen to Body Ratio85.60%
Screen Resolution
Screen Resolution1080X2340
Screen Resolution
Screen Resolution1080X2340
Display Size
Display Size6.25 inch to 6.5 inch
Display Size6.25 inch to 6.5 inch
Display Size6.25 inch to 6.5 inch
Display Type
Display Type
Display TypePLS TFT
Display TypeOptic AMOLED

OS
OSAndroid 9.0 (Pie) MIUI 10
OSAndroid 9.0 (Pie) One UI
OSAndroid 9.0 (Pie) OxygenOS 9.0.5
GPU
GPUAdreno 618
GPUAdreno 612
GPUAdreno 630
RAM
RAM6 GB RAM
RAM4 GB RAM
RAM8 GB RAM
Cores
Cores8
Cores
Cores8
Chipset GP
Chipset GPQualcomm SDM730 Snapdragon 730 (8 nm)
Chipset GPQualcomm SDM675 Snapdragon 675 (11 nm)
Chipset GPQualcomm SDM845 Snapdragon 845 (10 nm)
CPU
CPUOcta-core (2x2.2 GHz Kryo 470 Gold 6x1.8 GHz Kryo 470 Silver)
CPUOcta-core (2x2.0 GHz Kryo 460 Gold 6x1.7 GHz Kryo 460 Silver)
CPUOcta-core (4x2.8 GHz Kryo 385 Gold 4x1.7 GHz Kryo 385 Silver)
Chipset
Chipset
Chipset
ChipsetQualcomm SDM845 Snapdragon 845

RAM/Internal Storage
RAM/Internal Storage256 GB, 8 GB RAM or 64/128 GB, 6 GB RAM
RAM/Internal Storage128 GB, 6 GB RAM or 64 GB, 4 GB RAM
RAM/Internal Storage256 GB, 8 GB RAM, 128 GB, 6/8 GB RAM
Storage
Storage128 GB
Storage64 GB
Storage256 GB
Expandable Memory
Expandable MemoryNo
Expandable MemorymicroSD, up to 1 TB (uses shared SIM slot)
Expandable MemoryNo

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 Camera32 MP, f/1.7, 0.8 micron|8 MP, f/2.2, 12mm (ultrawide), 1.12 micron|5 MP, f/2.2, depth sensor
Triple Camera
Autofocus
AutofocusPDAF
AutofocusPDAF
AutofocusPDAF
Back Camera Video
Back Camera Video2160p30fps, 1080p30/120/240fps, 1080p960fps
Back Camera Video2160p30fps, 1080p30fps
Back Camera Video2160p30/60fps, 1080p30/60/240fps, 720p480fps, Auto HDR, gyro-EIS
Back Camera Features
Back Camera FeaturesDual-LED flash, HDR, panorama
Back Camera FeaturesLED flash, panorama, HDR
Back Camera FeaturesDual-LED flash, HDR, panorama
Dual Camera
Dual Camera
Dual Camera
Dual Camera16 MP, f/1.7, 25mm (wide), 1/2.6, 1.22 micron|20 MP (16 MP effective), f/1.7, 25mm (wide), 1/2.8, 1.0 micron
OIS
OIS
OIS
OISOIS

Single Camera
Single CameraMotorized pop-up 20 MP, f/2.2, 0.8 micron
Single Camera16 MP, f/2.0
Single Camera16 MP, f/2.0, 25mm (wide), 1/3.1, 1.0 micron
Front Camera Video
Front Camera Video1080p30fps
Front Camera Video1080p30fps
Front Camera Video1080p30fps
Front Camera Features
Front Camera FeaturesHDR
Front Camera FeaturesHDR
Front Camera FeaturesAuto-HDR, gyro-EIS

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

Battery Capacity
Battery Capacity4000 mAh
Battery Capacity3500 mAh
Battery Capacity3700 mAh
User Replaceable
User ReplaceableNon-removable
User ReplaceableNon-removable
User ReplaceableNon-removable
Charging
ChargingFast battery charging 18W
ChargingFast battery charging 15W
ChargingFast battery charging 20W
Battery Capacity
Battery Capacity4000 mAh
Battery Capacity3400 mAh to 3600 mAh
Battery Capacity3700 mAh
Battery Type
Battery TypeLi-Po
Battery TypeLi-Po
Battery TypeLi-Po

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

Sensors
SensorsFingerprint (under display), accelerometer, gyro, proximity, compass
SensorsFingerprint (rear-mounted), accelerometer, gyro, proximity, compass
SensorsFingerprint (under display), accelerometer, gyro, proximity, compass

Announced On
Announced On2019, May
Announced On2019, June
Announced On2018, October
Status
StatusAvailable. Released 2019, June
StatusAvailable. Released 2019, June
StatusAvailable. Released 2018, November