Oppo K1 vs OnePlus 6T vs Samsung Galaxy A7 (2018) vs Mi A1 comparison

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ratings
Overall NDTV RatingRead ReviewRead ReviewRead ReviewRead Review
Design Rating
Display Rating
Software Rating
Performance Rating
Battery Life Rating
Camera Rating
Value for Money Rating
key specs
Display6.41-inch6.41-inch6.00-inch5.50-inch
Processor2.2GHz octa-coreocta-core 2.2GHz octa-core2GHz octa-core
Front Camera25-megapixel16-megapixel 24-megapixel 5-megapixel
Resolution1080x2340 pixels1080x2340 pixels1080x2220 pixels1080x1920 pixels
RAM4GB8GB4GB4GB
OSAndroid 8.1 OreoAndroid 9.0Android 8.0Android 7.1.2
Storage64GB128GB64GB64GB
Rear Camera16-megapixel + 2-megapixel16-megapixel + 20-megapixel 24-megapixel + 8-megapixel + 5-megapixel 12-megapixel
Battery Capacity3600mAh3700mAh3300mAh3080mAh
general
Release dateFebruary 2019October 2018September 2018September 2017
Launched in IndiaYes-YesYes
Form factorTouchscreenTouchscreen-Touchscreen
Body typePlasticGlass--
Dimensions (mm)158.30 x 75.50 x 7.40157.50 x 74.80 x 8.20159.80 x 76.80 x 7.50155.40 x 75.80 x 7.30
Weight (g)156.00185.00168.00165.00
Battery capacity (mAh)3600370033003080
Removable batteryNoNoNoNo
Wireless chargingNoNoNo-
ColoursAstral Blue, Piano BlackMidnight Black, Mirror BlackBlack, Blue, Gold, PinkRose Gold, Gold, Black
Fast charging-Proprietary--
display
Screen size (inches)6.416.416.005.50
TouchscreenYesYesYesYes
Resolution1080x2340 pixels1080x2340 pixels1080x2220 pixels1080x1920 pixels
Protection typeGorilla GlassGorilla Glass--
Aspect ratio19.5:919.5:918.5:916:9
hardware
Processor2.2GHz octa-coreocta-core (4x2.8GHz)2.2GHz octa-core2GHz octa-core
Processor makeQualcomm Snapdragon 660Qualcomm Snapdragon 845-Qualcomm Snapdragon 625
RAM4GB8GB4GB4GB
Internal storage64GB128GB64GB64GB
Expandable storageYesNoYesYes
Expandable storage typemicroSD-microSDmicroSD
Expandable storage up to (GB)256-512128
Dedicated microSD slotYes---
camera
Rear camera16-megapixel + 2-megapixel16-megapixel (f/1.7, 1.22-micron) + 20-megapixel (f/1.7, 1-micron)24-megapixel (f/1.7) + 8-megapixel (f/2.4) + 5-megapixel (f/2.2)12-megapixel
Rear autofocusYesPhase detection autofocusYes-
Rear flashYesDual LEDYesDual LED
Front camera25-megapixel16-megapixel (f/2.0, 1-micron)24-megapixel (f/2.0)5-megapixel
Front flash-NoYes-
Front autofocus--No-
software
Operating systemAndroid 8.1 OreoAndroid 9.0Android 8.0Android 7.1.2
SkinColorOS 5.2OxygenOS--
connectivity
Wi-FiYesYesYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac802.11 a/b/g/n/ac802.11 a/b/g/n/ac802.11 a/b/g/n/ac
GPSYesYesYesYes
BluetoothYes, v 5.00Yes, v 5.00Yes, v 5.00Yes, v 4.20
NFCNoYesNoNo
USB OTGYesYes-Yes
Micro-USBYes---
HeadphonesYesType-C-3.5mm
FMNo-YesNo
Active 4G on both SIM cardsYesYesYes-
USB Type-C-Yes-Yes
Number of SIMs-222
Infrared---Yes
sensors
Fingerprint sensorYesYesYesYes
Compass/ MagnetometerYesYesYesYes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYesYesYes
GyroscopeYesYesYesYes
Face unlock-YesYes-
Barometer---No
Temperature sensor---No
sim 1
SIM Type-Nano-SIMNano-SIMNano-SIM
GSM/CDMA-GSM-GSM
3G-Yes-Yes
4G/ LTE-Yes-Yes
sim 2
SIM Type-Nano-SIMNano-SIMNano-SIM
GSM/CDMA-GSM-GSM
3G-Yes-Yes
4G/ LTE-YesYesYes