Redmi A7 4G vs Vivo Y55s comparison

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key specs
Display6.88-inch5.20-inch
ProcessorUnisoc T7250Qualcomm Snapdragon 425
Front Camera8-megapixel5-megapixel
Rear Camera13-megapixel13-megapixel
RAM4GB3GB
Storage64GB16GB
Battery Capacity5200mAh2730mAh
OSAndroid 16Android 6.0
Resolution720x1640 pixels1280x720 pixels
general
BrandRedmiVivo
ModelA7 4GY55s
Release dateApril 21, 2026February 1, 2017
AI EnabledNo-
Launched in IndiaYesYes
Form factorTouchscreenTouchscreen
Dimensions (mm)171.79 x 79.77 x 8.26147.90 x 72.90 x 7.50
Weight (g)193.00142.00
IP ratingIP52-
Battery capacity (mAh)52002730
Removable batteryNoNo
Fast charging15W Fast Charging-
Wireless chargingNo-
ColoursBlack, Sky BlueGold, Space Grey
SAR value-1.08
display
Refresh Rate120 Hz-
Resolution StandardHD+-
Screen size (inches)6.885.20
TouchscreenYesYes
Resolution720x1640 pixels1280x720 pixels
Aspect ratio-16:9
Pixels per inch (PPI)-282
hardware
Processor1.8GHz octa-core1.4GHz quad-core
Processor makeUnisoc T7250Qualcomm Snapdragon 425
RAM4GB3GB
Internal storage64GB16GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)2048256
Dedicated microSD slotYes-
camera
Rear camera13-megapixel13-megapixel (f/2.2)
No. of Rear Cameras1-
Front camera8-megapixel5-megapixel (f/2.2)
No. of Front Cameras1-
Rear autofocus-Yes
Rear flash-LED
software
Operating systemAndroid 16Android 6.0
SkinHyperOS 3Funtouch OS 3.0
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 ac-
GPSYesYes
BluetoothYes, v 5.20Yes
USB Type-CYes-
Number of SIMs22
Active 4G on both SIM cardsYes-
NFC-No
Infrared-No
USB OTG-Yes
Micro-USB-Yes
Headphones-3.5mm
FM-Yes
Wi-Fi Direct-No
Mobile High-Definition Link (MHL)-No
sim 1
SIM TypeNano-SIMMicro-SIM
3GYesYes
4G/ LTEYesYes
GSM/CDMA-GSM
sim 2
SIM TypeNano-SIM-
3GYesNo
4G/ LTEYesNo
sensors
Fingerprint sensorYes-
Compass/ MagnetometerYesYes
AccelerometerYesYes
Ambient light sensorYesYes
Proximity sensor-Yes
Gyroscope-Yes
Barometer-No
Temperature sensor-No
ratings
Overall NDTV Rating-Read Review
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-

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