Oppo Find X vs Vivo Nex S vs Vivo X21 comparison

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ratings
Overall NDTV Rating---
Design Rating---
Display Rating---
Software Rating---
Performance Rating---
Battery Life Rating---
Camera Rating---
Value for Money Rating---
general
Release dateJune 2018June 2018March 2018-
Form factorTouchscreenTouchscreenTouchscreen-
Dimensions (mm)156.70 x 74.30 x 9.40162.00 x 77.00 x 7.98154.50 x 74.80 x 7.40-
Weight (g)186.00-156.20-
Battery capacity (mAh)373040003200-
Removable batteryNo-No-
ColoursBordeaux Red, Glacier BlueRuby Red and Star Diamond BlackBlack, Gold-
display
Screen size (inches)6.426.596.28-
TouchscreenYesYesYes-
Resolution1080x2340 pixels1080x2316 pixels1080x2280 pixels-
hardware
Processor2.5GHz octa-core2.2GHz octa-core2.2GHz octa-core-
Processor makeSnapdragon 845 SoCQualcomm Snapdragon 845Qualcomm Snapdragon 660-
RAM8GB8GB6GB-
Internal storage256GB128GB128GB-
Expandable storage--Yes-
Expandable storage type--microSD-
Expandable storage up to (GB)--256-
camera
Rear camera16-megapixel12-megapixel12-megapixel-
Rear FlashLED-LED-
Front camera25-megapixel8-megapixel12-megapixel-
software
Operating SystemAndroid 8.1Android 8.1 OreoAndroid 8.1-
SkinColor OS 5.1-FunTouch 4.0-
connectivity
Wi-FiYesYesYes-
Wi-Fi standards supported802.11 a/b/g/n/ac-802.11 a/b/g/n/ac-
GPSYesYesYes-
BluetoothYes, v 5.00Yes, v 5.00Yes, v 5.00-
HeadphonesNo-3.5mm-
Number of SIMs222-
USB OTG-YesYes-
NFC--No-
Infrared--No-
FM--No-
sim 1
SIM TypeNano-SIM-Nano-SIM-
GSM/CDMAGSM + CDMAGSMGSM-
3GYes-Yes-
4G/ LTEYesYesYes-
sim 2
SIM TypeNano-SIM-Nano-SIM-
GSM/CDMAGSM + CDMAGSMGSM-
4G/ LTE-YesYes-
3G--Yes-
sensors
Proximity sensor-YesYes-
Accelerometer-YesYes-
Ambient light sensor-YesYes-
Compass/ Magnetometer--Yes-
Gyroscope--Yes-