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Mi 8 vs Vivo X21 vs Redmi Note 5 Pro vs Samsung Galaxy S9 comparison

 Compare Mi 8
Mi 8
Compare Vivo X21
Vivo X21
Compare Redmi Note 5 Pro
Redmi Note 5 Pro
Compare Samsung Galaxy S9
Samsung Galaxy S9
key specs
Display6.21-inch6.28-inch5.99-inch5.80-inch
ProcessorQualcomm Snapdragon 845Qualcomm Snapdragon 660Qualcomm Snapdragon 636Samsung Exynos 9810
Front Camera20-megapixel 12-megapixel 20-megapixel 8-megapixel
Rear Camera12-megapixel + 12-megapixel 12-megapixel + 5-megapixel 12-megapixel + 5-megapixel 12-megapixel
RAM6GB6GB4GB4GB
Storage64GB128GB64GB64GB
Battery Capacity3400mAh3200mAh4000mAh3000mAh
OSAndroid OreoAndroid 8.1Android 7.1.1Android 8.0
Resolution1080x2248 pixels1080x2280 pixels1080x2160 pixels1440x2960 pixels
general
BrandXiaomiVivoXiaomiSamsung
ModelMi 8X21Redmi Note 5 ProGalaxy S9
Release dateMay 1, 2018March 1, 2018February 1, 2018March 1, 2018
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)154.90 x 74.80 x 7.60154.50 x 74.80 x 7.40158.60 x 75.40 x 8.05147.70 x 68.70 x 8.50
Weight (g)175.00156.20181.00163.00
Battery capacity (mAh)3400320040003000
ColoursWhite, Gold, Light Blue, BlackBlack, GoldBlack, Gold, Lake Blue, Rose GoldLilac Purple, Midnight Black, Coral Blue
Launched in India-YesYesYes
Removable battery-NoNoNo
Fast charging-Proprietary-Quick Charge 2.0
Body type--Metal-
SAR value--1.19-
Wireless charging---Yes
display
Screen size (inches)6.216.285.995.80
TouchscreenYesYesYesYes
Resolution1080x2248 pixels1080x2280 pixels1080x2160 pixels1440x2960 pixels
Aspect ratio18.7:919:918:918.5:9
Pixels per inch (PPI)402--568
Protection type--Gorilla GlassGorilla Glass
hardware
Processorocta-core (4x2.8GHz + 4x1.8GHz)2.2GHz octa-core1.8GHz octa-coreocta-core (4x2.7GHz + 4x1.7GHz)
Processor makeQualcomm Snapdragon 845Qualcomm Snapdragon 660Qualcomm Snapdragon 636Samsung Exynos 9810
RAM6GB6GB4GB4GB
Internal storage64GB128GB64GB64GB
Expandable storage-YesYesYes
Expandable storage type-microSDmicroSDmicroSD
Expandable storage up to (GB)-256128400
camera
Rear camera12-megapixel (f/1.8, 1.4-micron) + 12-megapixel (f/2.4, 1.0-micron)12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4)12-megapixel (f/2.2, 1.25-micron) + 5-megapixel (f/2.0, 1.12-micron)12-megapixel (1.4-micron)
Rear autofocusPhase detection autofocusPhase detection autofocusPhase detection autofocusPhase detection autofocus
Rear flashDual LEDLEDLEDLED
Front camera20-megapixel (f/2.0, 0.9-micron)12-megapixel (f/2.0)20-megapixel (f/2.2, 1.0-micron)8-megapixel (f/1.7, 1.22-micron)
Front flash--LEDNo
Front autofocus---Yes
software
Operating systemAndroid OreoAndroid 8.1Android 7.1.1Android 8.0
SkinMIUI 10FunTouch 4.0MIUI 9Experience 9.0
connectivity
Wi-FiYesYesYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac802.11 a/b/g/n/ac802.11 b/g/n/ac802.11 a/b/g/n/ac
GPSYesYesYesYes
BluetoothYes, v 5.00Yes, v 5.00Yes, v 5.00Yes, v 5.00
NFCYesNoNoYes
USB OTGYesYesYesYes
USB Type-CYes--Yes
Number of SIMs2222
Infrared-NoNo-
Micro-USB-YesYes-
Headphones-3.5mm3.5mm3.5mm
FM-NoYesNo
Wi-Fi Direct--YesYes
Mobile High-Definition Link (MHL)--No-
sim 1
SIM TypeNano-SIMNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sim 2
SIM TypeNano-SIMNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sensors
Face unlockYes-YesYes
Fingerprint sensorYesYesYesYes
Compass/ MagnetometerYesYesYesYes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYesYesYes
GyroscopeYesYesYesYes
BarometerYes-NoYes
3D face recognition--No-
Temperature sensor--No-
ratings
Overall NDTV Rating-Read ReviewRead ReviewRead Review
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-

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