Vivo X21s vs Oppo K1 vs Honor 8X vs Samsung Galaxy S8+ comparison

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key specs
Display6.41-inch6.41-inch6.50-inch6.20-inch
ProcessorQualcomm Snapdragon 660Qualcomm Snapdragon 660HiSilicon Kirin 710Samsung Exynos 8895
Front Camera24.8-megapixel25-megapixel16-megapixel 8-megapixel
Rear Camera12-megapixel + 5-megapixel16-megapixel + 2-megapixel20-megapixel + 2-megapixel12-megapixel
RAM6GB4GB4GB4GB
Storage128GB64GB64GB64GB
Battery Capacity3400mAh3600mAh3750mAh3500mAh
OSAndroid 8.1 OreoAndroid 8.1 OreoAndroid 8.1 OreoAndroid 7.0
Resolution1080x2340 pixels1080x2340 pixels1080x2340 pixels1440x2960 pixels
general
BrandVivoOppoHonorSamsung
ModelX21sK18XGalaxy S8+
Release dateNovember 1, 2018February 1, 2019September 1, 2018March 1, 2017
Form factorTouchscreenTouchscreen-Touchscreen
Dimensions (mm)157.91 x 75.08 x 7.90158.30 x 75.50 x 7.40160.40 x 76.60 x 7.80159.50 x 73.40 x 8.10
Weight (g)156.00156.00175.00173.00
Battery capacity (mAh)3400360037503500
ColoursStarry Night BlackAstral Blue, Piano BlackBlack, BlueMidnight Black, Orchid Gray, Arctic Silver, Coral Blue, Maple Gold
Launched in India-Yes--
Body type-Plastic--
Removable battery-No-No
Wireless charging-No--
display
Screen size (inches)6.416.416.506.20
TouchscreenYesYesYesYes
Resolution1080x2340 pixels1080x2340 pixels1080x2340 pixels1440x2960 pixels
Aspect ratio19.5:919.5:919.5:9-
Protection type-Gorilla Glass--
Pixels per inch (PPI)--396529
hardware
Processorocta-core2.2GHz octa-core2.2GHz octa-core1.9GHz octa-core
Processor makeQualcomm Snapdragon 660Qualcomm Snapdragon 660HiSilicon Kirin 710Samsung Exynos 8895
RAM6GB4GB4GB4GB
Internal storage128GB64GB64GB64GB
Expandable storageYesYesYesYes
Expandable storage typemicroSDmicroSDmicroSD-
Expandable storage up to (GB)256256256256
Dedicated microSD slot-Yes--
camera
Rear camera12-megapixel + 5-megapixel16-megapixel + 2-megapixel20-megapixel (f/1.8) + 2-megapixel12-megapixel
Rear autofocusYesYesPhase detection autofocus-
Front camera24.8-megapixel25-megapixel16-megapixel (f/2.0)8-megapixel
Rear flash-Yes-Dual LED
software
Operating systemAndroid 8.1 OreoAndroid 8.1 OreoAndroid 8.1 OreoAndroid 7.0
Skin-ColorOS 5.2EMUI 8.2-
connectivity
Wi-FiYesYesYesYes
GPSYesYesYesYes
BluetoothYesYes, v 5.00Yes, v 4.20Yes
Micro-USBYesYesYes-
Headphones3.5mmYes3.5mm3.5mm
Number of SIMs2-21
Wi-Fi standards supported-802.11 a/b/g/n/ac802.11 a/b/g/n/ac802.11 a/b/g/n/ac
NFC-No-Yes
USB OTG-YesYesYes
FM-No-No
Active 4G on both SIM cards-Yes--
Wi-Fi Direct--NoNo
Infrared---No
Mobile High-Definition Link (MHL)---No
sim 1
GSM/CDMAGSM-GSMGSM
3GYes-YesYes
4G/ LTEYes-YesYes
SIM Type--Nano-SIM-
sim 2
GSM/CDMAGSM-GSM-
3GYes-Yes-
4G/ LTEYes-Yes-
SIM Type--Nano-SIM-
sensors
Face unlockYes---
Fingerprint sensorYesYesYes-
Compass/ MagnetometerYesYesYesYes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYesYesYes
GyroscopeYesYesYesYes
Barometer---Yes
Temperature sensor---No
ratings
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Value for Money Rating-

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