Vivo X21s vs Oppo R15x vs Xiaomi Redmi Note 6 Pro vs Realme 2 comparison

Compare Vivo X21s
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Compare Xiaomi Redmi Note 6 Pro
Compare Realme 2
key specs
Display6.41-inch6.40-inch6.26-inch6.20-inch
ProcessorQualcomm Snapdragon 660Qualcomm Snapdragon 660Qualcomm Snapdragon 636Qualcomm Snapdragon 450
Front Camera24.8-megapixel25-megapixel20-megapixel + 2-megapixel8-megapixel
Rear Camera12-megapixel + 5-megapixel16-megapixel + 2-megapixel12-megapixel + 5-megapixel13-megapixel + 2-megapixel
RAM6GB6GB4GB3GB
Storage128GB128GB64GB32GB
Battery Capacity3400mAh3500mAh4000mAh4230mAh
OSAndroid 8.1 OreoAndroid OreoAndroidAndroid 8.1
Resolution1080x2340 pixels-1080x2280 pixels720x1520 pixels
general
BrandVivoOppoXiaomiRealme
ModelX21sR15xRedmi Note 6 Pro2
Release dateNovember 1, 2018November 1, 2018September 28, 2018August 1, 2018
Form factorTouchscreen-TouchscreenTouchscreen
Dimensions (mm)157.91 x 75.08 x 7.90-157.91 x 76.38 x 8.26156.20 x 75.60 x 8.20
Weight (g)156.00--168.00
Battery capacity (mAh)3400350040004230
ColoursStarry Night BlackNebula, Ice BlueBlack, Blue, Rose GoldDiamond Black, Diamond Blue, Diamond Red
Removable battery--No-
Fast charging--Quick Charge 3.0-
Wireless charging--No-
SAR value--1.05-
Launched in India---Yes
display
Screen size (inches)6.416.406.266.20
TouchscreenYesYesYesYes
Resolution1080x2340 pixels-1080x2280 pixels720x1520 pixels
Aspect ratio19.5:9-19:919:9
Protection type---Gorilla Glass
Pixels per inch (PPI)---271
hardware
Processorocta-coreocta-coreocta-core1.8GHz octa-core
Processor makeQualcomm Snapdragon 660Qualcomm Snapdragon 660Qualcomm Snapdragon 636Qualcomm Snapdragon 450
RAM6GB6GB4GB3GB
Internal storage128GB128GB64GB32GB
Expandable storageYes-YesYes
Expandable storage typemicroSD-microSDmicroSD
Expandable storage up to (GB)256--256
Dedicated microSD slot--No-
camera
Rear camera12-megapixel + 5-megapixel16-megapixel + 2-megapixel12-megapixel (f/1.9, 1.4-micron) + 5-megapixel13-megapixel (f/2.2, 1.12-micron) + 2-megapixel (f/2.4, 1.75-micron)
Rear autofocusYes-Yes-
Front camera24.8-megapixel25-megapixel20-megapixel (f/2.0, 1.8-micron) + 2-megapixel8-megapixel (f/2.2, 1.12-micron)
Rear flash--YesYes
software
Operating systemAndroid 8.1 OreoAndroid OreoAndroidAndroid 8.1
Skin-ColorOS 5.2MIUIColorOS 5.1
connectivity
Wi-FiYesYesYesYes
GPSYesYesYesYes
BluetoothYesYesYes, v 5.00Yes, v 4.20
Micro-USBYes-YesYes
Headphones3.5mm3.5mm-3.5mm
Number of SIMs2-22
NFC--No-
Active 4G on both SIM cards--Yes-
sim 1
GSM/CDMAGSM-GSMGSM
3GYes-YesYes
4G/ LTEYes-YesYes
SIM Type--Nano-SIMNano-SIM
sim 2
GSM/CDMAGSM-GSMGSM
3GYes-YesYes
4G/ LTEYes-YesYes
SIM Type--Nano-SIMNano-SIM
sensors
Face unlockYes--Yes
Fingerprint sensorYes-YesYes
Compass/ MagnetometerYes--Yes
Proximity sensorYes-YesYes
AccelerometerYes-YesYes
Ambient light sensorYes--Yes
GyroscopeYes---
ratings
Overall NDTV Rating--Read ReviewRead Review
Design Rating--
Display Rating--
Software Rating--
Performance Rating--
Battery Life Rating--
Camera Rating--
Value for Money Rating--

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