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Oppo R17 vs Vivo X21 vs Vivo V9 comparison

 Compare Oppo R17
Oppo R17
Compare Vivo X21
Vivo X21
Compare Vivo V9
Vivo V9
key specs
Display6.40-inch6.28-inch6.30-inch
ProcessorQualcomm Snapdragon 670Qualcomm Snapdragon 660Qualcomm Snapdragon 626
Front Camera25-megapixel 12-megapixel 24-megapixel
Rear Camera16-megapixel + 5-megapixel12-megapixel + 5-megapixel 16-megapixel + 5-megapixel
RAM8GB6GB4GB
Storage128GB128GB64GB
Battery Capacity3500mAh3200mAh3260mAh
OSAndroid 8.1Android 8.1Android 8.1
Resolution1080x2280 pixels1080x2280 pixels1080x2280 pixels
general
BrandOppoVivoVivo
ModelR17X21V9
Release dateAugust 1, 2018March 1, 2018March 1, 2018
Form factorTouchscreenTouchscreenTouchscreen
Battery capacity (mAh)350032003260
Fast chargingVOOCProprietary-
ColoursStreamer Blue, Neon PurpleBlack, GoldPearl Black, Gold
Launched in India-YesYes
Dimensions (mm)-154.50 x 74.80 x 7.40154.80 x 75.00 x 7.90
Weight (g)-156.20150.00
Removable battery-NoNo
SAR value--1.38
display
Screen size (inches)6.406.286.30
TouchscreenYesYesYes
Resolution1080x2280 pixels1080x2280 pixels1080x2280 pixels
Aspect ratio19:919:919:9
Pixels per inch (PPI)374--
hardware
Processorocta-core (2x2GHz + 6x1.7GHz)2.2GHz octa-core2.2GHz octa-core
Processor makeQualcomm Snapdragon 670Qualcomm Snapdragon 660Qualcomm Snapdragon 626
RAM8GB6GB4GB
Internal storage128GB128GB64GB
Expandable storageNoYesYes
Expandable storage type-microSDmicroSD
Expandable storage up to (GB)-256256
camera
Rear camera16-megapixel (f/1.8, 1.22-micron) + 5-megapixel12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4)16-megapixel (f/2.0) + 5-megapixel
Rear autofocusPhase detection autofocusPhase detection autofocusPhase detection autofocus
Rear flashDual LEDLEDDual LED
Front camera25-megapixel (f/2.0)12-megapixel (f/2.0)24-megapixel (f/2.0)
software
Operating systemAndroid 8.1Android 8.1Android 8.1
SkinColorOS 5.2FunTouch 4.0FunTouch OS 4.0
connectivity
Wi-FiYesYesYes
GPSYesYesYes
BluetoothYes, v 5.00Yes, v 5.00Yes, v 4.20
Micro-USBYesYesYes
Headphones3.5mm3.5mm3.5mm
Wi-Fi DirectYes--
Wi-Fi standards supported-802.11 a/b/g/n/ac-
NFC-No-
Infrared-No-
USB OTG-YesYes
FM-NoYes
Number of SIMs-22
sensors
Fingerprint sensorYesYesYes
Proximity sensorYesYesYes
AccelerometerYesYesYes
Ambient light sensorYesYesYes
GyroscopeYesYesYes
Compass/ Magnetometer-YesYes
Face unlock--Yes
ratings
Overall NDTV Rating-Read ReviewRead Review
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
sim 1
SIM Type-Nano-SIMNano-SIM
GSM/CDMA-GSMGSM
3G-YesYes
4G/ LTE-YesYes
sim 2
SIM Type-Nano-SIMNano-SIM
GSM/CDMA-GSMGSM
3G-YesYes
4G/ LTE-YesYes

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