Redmi 9 vs Vivo X21i comparison

Compare Redmi 9
Compare Vivo X21i
ratings
Overall NDTV RatingRead Review-
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
key specs
Display6.53-inch6.28-inch
ProcessorMediaTek Helio G35MediaTek Helio P60
Front Camera5-megapixel 24-megapixel
Rear Camera13-megapixel + 2-megapixel 12-megapixel
RAM4GB4GB
Storage64GB64GB
Battery Capacity5000mAh3245mAh
OSAndroid 10Android 8.1
Resolution720x1600 pixels1080x2280 pixels
general
BrandXiaomiVivo
ModelRedmi 9X21i
Release date27th August 2020May 2018
Launched in IndiaYes-
Form factorTouchscreenTouchscreen
Dimensions (mm)164.90 x 77.07 x 9.00154.37 x 74.98 x 6.99
Weight (g)196.00159.00
Battery capacity (mAh)50003245
Fast chargingProprietary-
ColoursCarbon Black, Sporty Orange, Sky BlueAurora White, Polar Night, Ruby Red
display
Screen size (inches)6.536.28
TouchscreenYesYes
Resolution720x1600 pixels1080x2280 pixels
Aspect ratio20:9-
hardware
Processorocta-core2GHz octa-core
Processor makeMediaTek Helio G35MediaTek Helio P60 (MT6771)
RAM4GB4GB
Internal storage64GB64GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)512256
Dedicated microSD slotYes-
camera
Rear camera13-megapixel (f/2.2) + 2-megapixel (f/2.4)12-megapixel
Rear autofocusYes-
Rear flashYesDual LED
Front camera5-megapixel (f/2.2, 1.12-micron)24-megapixel
software
Operating systemAndroid 10Android 8.1
SkinMIUI 12Funtouch OS 4
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 b/g/n802.11 b/g/n
GPSYesYes
BluetoothYes, v 5.00Yes
Micro-USBYes-
Headphones3.5mm-
FMYesYes
Number of SIMs22
USB OTG-Yes
sim 1
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
sensors
Face unlockYes-
Fingerprint sensorYes-
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
Gyroscope-Yes
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