Vivo Y91i vs Vivo Y81 vs Redmi 6 comparison

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key specs
Display6.22-inch6.22-inch5.45-inch
ProcessorMediaTek Helio P22 MediaTek Helio P22 MediaTek Helio P22
Front Camera5-megapixel 5-megapixel 5-megapixel
Rear Camera13-megapixel 13-megapixel 12-megapixel + 5-megapixel
RAM2GB3GB3GB
Storage16GB32GB32GB
Battery Capacity4030mAh3260mAh3000mAh
OSAndroid 8.1Android 8.1Android 8.1 Oreo
Resolution720x1520 pixels720x1520 pixels720x1440 pixels
general
BrandVivoVivoXiaomi
ModelY91iY81Redmi 6
Release dateMarch 1, 2019June 1, 2018June 1, 2018
Launched in IndiaYesYesYes
Form factorTouchscreenTouchscreenTouchscreen
Dimensions (mm)155.11 x 75.09 x 8.28155.06 x 75.00 x 7.77147.50 x 71.50 x 8.30
Weight (g)163.50146.50146.00
Battery capacity (mAh)403032603000
ColoursFusion Black, Ocean BlueBlackLake Blue, Gold, Rose Gold, Black
Body type-PlasticPlastic
Removable battery--No
Wireless charging--No
display
Screen size (inches)6.226.225.45
TouchscreenYesYesYes
Resolution720x1520 pixels720x1520 pixels720x1440 pixels
Aspect ratio19:919:918:9
Pixels per inch (PPI)-270295
hardware
Processorocta-core2GHz octa-core2GHz octa-core (8x2GHz)
Processor makeMediaTek Helio P22 (MT6762)MediaTek Helio P22 (MT6762)MediaTek Helio P22 (MT6762)
RAM2GB3GB3GB
Internal storage16GB32GB32GB
Expandable storageYesYesYes
Expandable storage typemicroSDmicroSDmicroSD
Expandable storage up to (GB)-256256
Dedicated microSD slot--Yes
camera
Rear camera13-megapixel (f/2.2)13-megapixel (f/2.2)12-megapixel (f/2.2, 1.25-micron) + 5-megapixel
Rear autofocusYesPhase detection autofocusPhase detection autofocus
Rear flashYesLEDLED
Front camera5-megapixel (f/1.8)5-megapixel (f/2.2)5-megapixel (f/2.2, 1.12-micron)
Front flash--No
software
Operating systemAndroid 8.1Android 8.1Android 8.1 Oreo
SkinFuntouch OS 4.5FunTouch OS 4.0MIUI 9.6
connectivity
Wi-FiYesYesYes
GPSYesYesYes
BluetoothYes, v 5.00Yes, v 5.00Yes, v 4.20
USB OTGYes-Yes
Micro-USBYesYesYes
Headphones3.5mm3.5mm3.5mm
FMYes-Yes
Number of SIMs222
Wi-Fi standards supported-802.11 b/g/n802.11 b/g/n
Wi-Fi Direct-Yes-
NFC--No
Infrared--No
USB Type-C--No
Active 4G on both SIM cards--Yes
sim 1
SIM TypeNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSM
3GYesYesYes
4G/ LTEYesYesYes
sim 2
SIM TypeNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSM
3GYesYesYes
4G/ LTEYesYesYes
sensors
Face unlockYes-Yes
Fingerprint sensorNo-Yes
Compass/ MagnetometerYesYesYes
Proximity sensorYesYesYes
AccelerometerYesYesYes
Ambient light sensorYes-Yes
GyroscopeYes-No
3D face recognition--No
ratings
Overall NDTV Rating--Read Review
Design Rating--
Display Rating--
Software Rating--
Performance Rating--
Battery Life Rating--
Camera Rating--
Value for Money Rating--

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