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Redmi A7 4G vs Vivo Y21T comparison

 Compare Redmi A7 4G
Redmi A7 4G
Compare Vivo Y21T
Vivo Y21T
key specs
Display6.88-inch6.58-inch
ProcessorUnisoc T7250Qualcomm Snapdragon 680
Front Camera8-megapixel8-megapixel
Rear Camera13-megapixel50-megapixel + 2-megapixel + 2-megapixel
RAM4GB4GB
Storage64GB128GB
Battery Capacity5200mAh5000mAh
OSAndroid 16Android 11
Resolution720x1640 pixels1080x2408 pixels
general
BrandRedmiVivo
ModelA7 4GY21T
Release dateApril 21, 2026January 1, 2022
AI EnabledNo-
Launched in IndiaYesYes
Form factorTouchscreenTouchscreen
Dimensions (mm)171.79 x 79.77 x 8.26164.26 x 76.08 x 8.00
Weight (g)193.00182.00
IP ratingIP52-
Battery capacity (mAh)52005000
Removable batteryNo-
Fast charging15W Fast ChargingProprietary
Wireless chargingNo-
ColoursBlack, Sky BlueMidnight Blue, Pearl White
display
Refresh Rate120 Hz90 Hz
Resolution StandardHD+-
Screen size (inches)6.886.58
TouchscreenYesYes
Resolution720x1640 pixels1080x2408 pixels
hardware
Processor1.8GHz octa-coreocta-core
Processor makeUnisoc T7250Qualcomm Snapdragon 680
RAM4GB4GB
Internal storage64GB128GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)20481000
Dedicated microSD slotYesYes
camera
Rear camera13-megapixel50-megapixel (f/1.8) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)
No. of Rear Cameras13
Front camera8-megapixel8-megapixel (f/1.8)
No. of Front Cameras11
Rear autofocus-Yes
Rear flash-Yes
software
Operating systemAndroid 16Android 11
SkinHyperOS 3FunTouch OS 12
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 ac-
GPSYesYes
BluetoothYes, v 5.20Yes, v 5.00
USB Type-CYesYes
Number of SIMs22
Active 4G on both SIM cardsYes-
USB OTG-Yes
Headphones-3.5mm
FM-Yes
sim 1
SIM TypeNano-SIMNano-SIM
3GYesYes
4G/ LTEYesYes
GSM/CDMA-GSM
sim 2
SIM TypeNano-SIMNano-SIM
3GYesYes
4G/ LTEYesYes
GSM/CDMA-GSM
sensors
Fingerprint sensorYesYes
Compass/ MagnetometerYesYes
AccelerometerYesYes
Ambient light sensorYesYes
Proximity sensor-Yes
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