Vivo X21s vs Oppo RX17 Neo vs Oppo R15x comparison

Compare Vivo X21s
Compare Oppo RX17 Neo
Compare Oppo R15x
key specs
Display6.41-inch6.40-inch6.40-inch
ProcessorQualcomm Snapdragon 660Qualcomm Snapdragon 660Qualcomm Snapdragon 660
Front Camera24.8-megapixel25-megapixel 25-megapixel
Rear Camera12-megapixel + 5-megapixel16-megapixel + 2-megapixel 16-megapixel + 2-megapixel
RAM6GB4GB6GB
Storage128GB128GB128GB
Battery Capacity3400mAh3600mAh3500mAh
OSAndroid 8.1 OreoAndroid 8.1 OreoAndroid Oreo
Resolution1080x2340 pixels1080x2340 pixels-
general
BrandVivoOppoOppo
ModelX21sRX17 NeoR15x
Release dateNovember 1, 2018November 1, 2018November 1, 2018
Form factorTouchscreenTouchscreen-
Dimensions (mm)157.91 x 75.08 x 7.90158.30 x 75.50 x 7.40-
Weight (g)156.00156.00-
Battery capacity (mAh)340036003500
ColoursStarry Night BlackMocha Red, Astral BlueNebula, Ice Blue
Launched in India-No-
display
Screen size (inches)6.416.406.40
TouchscreenYesYesYes
Resolution1080x2340 pixels1080x2340 pixels-
Aspect ratio19.5:919:9-
Protection type-Gorilla Glass-
hardware
Processorocta-coreocta-core (2x2.2GHz + 6x1.7GHz)octa-core
Processor makeQualcomm Snapdragon 660Qualcomm Snapdragon 660Qualcomm Snapdragon 660
RAM6GB4GB6GB
Internal storage128GB128GB128GB
Expandable storageYes--
Expandable storage typemicroSD--
Expandable storage up to (GB)256--
camera
Rear camera12-megapixel + 5-megapixel16-megapixel (f/1.75) + 2-megapixel (f/2.4)16-megapixel + 2-megapixel
Rear autofocusYes--
Front camera24.8-megapixel25-megapixel (f/2.0)25-megapixel
Rear flash-LED-
software
Operating systemAndroid 8.1 OreoAndroid 8.1 OreoAndroid Oreo
Skin-ColorOS 5.2ColorOS 5.2
connectivity
Wi-FiYesYesYes
GPSYesYesYes
BluetoothYesYes, v 5.00Yes
Micro-USBYes--
Headphones3.5mm-3.5mm
Number of SIMs2--
Wi-Fi standards supported-802.11 ac-
NFC-Yes-
USB Type-C-Yes-
Active 4G on both SIM cards-Yes-
sim 1
GSM/CDMAGSM--
3GYes--
4G/ LTEYes--
sim 2
GSM/CDMAGSM--
3GYes--
4G/ LTEYes--
sensors
Face unlockYes--
Fingerprint sensorYes--
Compass/ MagnetometerYes--
Proximity sensorYes--
AccelerometerYes--
Ambient light sensorYes--
GyroscopeYes--

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