Oppo A7 vs Vivo X21s vs Oppo A7X comparison

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ratings
Overall NDTV RatingRead Review--
Design Rating--
Display Rating--
Software Rating--
Performance Rating--
Battery Life Rating--
Camera Rating--
Value for Money Rating--
key specs
Display6.20-inch6.41-inch6.30-inch
Front Camera16-megapixel24.8-megapixel8-megapixel
Rear Camera13-megapixel + 2-megapixel 12-megapixel + 5-megapixel16-megapixel
RAM4GB6GB4GB
Storage64GB128GB128GB
Battery Capacity4230mAh3400mAh-
OSAndroid 8.1Android 8.1 OreoAndroid Oreo
Processor-Qualcomm Snapdragon 660MediaTek Helio P60
Resolution-1080x2340 pixels-
general
BrandOppoVivoOppo
ModelA7X21sA7X
Release dateNovember 1, 2018November 1, 2018September 1, 2018
Launched in IndiaYes-No
Form factorTouchscreenTouchscreenTouchscreen
Body typePlastic--
Dimensions (mm)155.90 x 75.40 x 8.10157.91 x 75.08 x 7.90-
Weight (g)168.00156.00-
Battery capacity (mAh)42303400-
Removable batteryNo--
ColoursGlaring Gold, Glaze BlueStarry Night BlackStar Purple, Ice Flame Blue
SAR value1.37--
display
Screen size (inches)6.206.416.30
TouchscreenYesYesYes
Aspect ratio19.5:919.5:919.5:9
Resolution-1080x2340 pixels-
hardware
Processor makeQualcomm Snapdragon 450Qualcomm Snapdragon 660MediaTek Helio P60 (MT6771)
RAM4GB6GB4GB
Internal storage64GB128GB128GB
Expandable storageYesYesYes
Expandable storage typemicroSDmicroSD-
Expandable storage up to (GB)256256-
Dedicated microSD slotYes--
Processor-octa-core2GHz octa-core
camera
Rear camera13-megapixel (f/2.2) + 2-megapixel (f/2.4)12-megapixel + 5-megapixel16-megapixel
Rear autofocusYesYes-
Rear flashYes-Yes
Front camera16-megapixel24.8-megapixel8-megapixel
Front autofocusNo--
Front flashNo--
software
Operating systemAndroid 8.1Android 8.1 OreoAndroid Oreo
SkinColorOS 5.2-Color OS 5.2
connectivity
Wi-FiYesYesYes
Wi-Fi standards supported802.11 a/b/g/n-802.11 a/b/g/n/ac
GPSYesYesYes
BluetoothYes, v 4.20Yes-
USB OTGYes--
Micro-USBYesYesYes
Headphones3.5mm3.5mm-
FMYes--
Number of SIMs22-
Active 4G on both SIM cardsYes--
sim 1
GSM/CDMAGSMGSM-
3GYesYes-
4G/ LTEYesYes-
sim 2
GSM/CDMAGSMGSM-
3GYesYes-
4G/ LTEYesYes-
sensors
Face unlockYesYes-
Fingerprint sensorYesYesYes
Compass/ MagnetometerYesYesYes
Proximity sensorYesYesYes
AccelerometerYesYesYes
Ambient light sensorYesYesYes
GyroscopeYesYes-
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