Oppo F7 vs Vivo X21 vs Samsung Galaxy S8 comparison

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ratings
Overall NDTV RatingRead ReviewRead ReviewRead Review-
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
key specs
Display6.23-inch6.28-inch5.80-inch-
Processorocta-core 2.2GHz octa-coreocta-core -
Front Camera25-megapixel 12-megapixel 8-megapixel -
Resolution1080x2280 pixels1080x2280 pixels1440x2960 pixels-
RAM4GB6GB4GB-
OSAndroid 8.1Android 8.1Android 7.0-
Storage64GB128GB64GB-
Rear Camera16-megapixel 12-megapixel + 5-megapixel 12-megapixel -
Battery Capacity3400mAh3200mAh3000mAh-
general
Release dateMarch 2018March 2018March 2017-
Launched in IndiaYesYesYes-
Form factorTouchscreenTouchscreenTouchscreen-
Dimensions (mm)156.00 x 75.30 x 7.80154.50 x 74.80 x 7.40148.90 x 68.10 x 8.00-
Weight (g)158.00156.20155.00-
Battery capacity (mAh)340032003000-
Removable batteryNoNoNo-
ColoursDiamond Black, Moonlight Silver, Solar Red,Black, GoldMidnight Black, Orchid Gray, Arctic Silver, Coral Blue, Maple Gold-
SAR value1.27---
Fast charging-ProprietaryQuick Charge 2.0-
display
Screen size (inches)6.236.285.80-
TouchscreenYesYesYes-
Resolution1080x2280 pixels1080x2280 pixels1440x2960 pixels-
Protection typeGorilla Glass-Gorilla Glass-
Aspect ratio19:919:918.5:9-
Pixels per inch (PPI)405-570-
hardware
Processorocta-core (4x2GHz + 4x2GHz)2.2GHz octa-coreocta-core (4x2.35GHz + 4x1.9GHz)-
Processor makeMediaTek Helio P60Qualcomm Snapdragon 660Samsung Exynos 8895-
RAM4GB6GB4GB-
Internal storage64GB128GB64GB-
Expandable storageYesYesYes-
Expandable storage typemicroSDmicroSDmicroSD-
Expandable storage up to (GB)256256256-
camera
Rear camera16-megapixel (f/1.8)12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4)12-megapixel (f/1.7, 1.4-micron)-
Rear autofocusPhase detection autofocusPhase detection autofocusPhase detection autofocus-
Rear flashLEDLEDDual LED-
Front camera25-megapixel (f/2.0)12-megapixel (f/2.0)8-megapixel (f/1.7, 1.22-micron)-
Front flashNo---
Front autofocus--Yes-
software
Operating systemAndroid 8.1Android 8.1Android 7.0-
SkinColorOS 5.0FunTouch 4.0--
connectivity
Wi-FiYesYesYes-
Wi-Fi standards supported802.11 b/g/n/ac802.11 a/b/g/n/ac802.11 a/b/g/n/ac-
GPSYesYesYes-
BluetoothYes, v 4.20Yes, v 5.00Yes-
NFCNoNoYes-
InfraredNoNoNo-
USB OTGYesYesNo-
Headphones3.5mm3.5mm3.5mm-
FMYesNoNo-
Number of SIMs221-
Micro-USB-Yes--
USB Type-C--Yes-
sim 1
SIM TypeNano-SIMNano-SIM--
GSM/CDMAGSMGSMGSM-
3GYesYesYes-
4G/ LTEYesYesYes-
sim 2
SIM TypeNano-SIMNano-SIM--
GSM/CDMAGSMGSM--
3GYesYes--
4G/ LTEYesYes--
sensors
Fingerprint sensorYesYesYes-
Compass/ MagnetometerYesYesYes-
Proximity sensorYesYesYes-
AccelerometerYesYesYes-
Ambient light sensorYesYesYes-
GyroscopeYesYesYes-
Barometer--Yes-
Temperature sensor--No-