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Vivo Y91i vs Realme U1 vs Xiaomi Redmi Note 6 Pro vs Vivo Y81 comparison

 Compare Vivo Y91i
Vivo Y91i
Compare Realme U1
Realme U1
Compare Xiaomi Redmi Note 6 Pro
Xiaomi Redmi Note 6 Pro
Compare Vivo Y81
Vivo Y81
key specs
Display6.22-inch6.30-inch6.26-inch6.22-inch
ProcessorMediaTek Helio P22 MediaTek Helio P70Qualcomm Snapdragon 636MediaTek Helio P22
Front Camera5-megapixel 25-megapixel 20-megapixel + 2-megapixel5-megapixel
Rear Camera13-megapixel 13-megapixel + 2-megapixel 12-megapixel + 5-megapixel13-megapixel
RAM2GB4GB4GB3GB
Storage16GB64GB64GB32GB
Battery Capacity4030mAh3500mAh4000mAh3260mAh
OSAndroid 8.1Android 8.1 OreoAndroidAndroid 8.1
Resolution720x1520 pixels1080x2340 pixels1080x2280 pixels720x1520 pixels
general
BrandVivoRealmeXiaomiVivo
ModelY91iU1Redmi Note 6 ProY81
Release dateMarch 1, 2019November 1, 2018September 28, 2018June 1, 2018
Launched in IndiaYesYes-Yes
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)155.11 x 75.09 x 8.28157.00 x 74.00 x 8.00157.91 x 76.38 x 8.26155.06 x 75.00 x 7.77
Weight (g)163.50168.00-146.50
Battery capacity (mAh)4030350040003260
ColoursFusion Black, Ocean BlueAmbitious Black, Brave Blue, and Fiery GoldBlack, Blue, Rose GoldBlack
Removable battery-NoNo-
Wireless charging-NoNo-
SAR value-1.311.05-
Fast charging--Quick Charge 3.0-
Body type---Plastic
display
Screen size (inches)6.226.306.266.22
TouchscreenYesYesYesYes
Resolution720x1520 pixels1080x2340 pixels1080x2280 pixels720x1520 pixels
Aspect ratio19:919.5:919:919:9
Protection type-Gorilla Glass--
Pixels per inch (PPI)-409-270
hardware
Processorocta-core2.1GHz octa-coreocta-core2GHz octa-core
Processor makeMediaTek Helio P22 (MT6762)MediaTek Helio P70Qualcomm Snapdragon 636MediaTek Helio P22 (MT6762)
RAM2GB4GB4GB3GB
Internal storage16GB64GB64GB32GB
Expandable storageYesYesYesYes
Expandable storage typemicroSDmicroSDmicroSDmicroSD
Expandable storage up to (GB)-256-256
Dedicated microSD slot-YesNo-
camera
Rear camera13-megapixel (f/2.2)13-megapixel (f/2.2) + 2-megapixel (f/2.4)12-megapixel (f/1.9, 1.4-micron) + 5-megapixel13-megapixel (f/2.2)
Rear autofocusYes-YesPhase detection autofocus
Rear flashYesLEDYesLED
Front camera5-megapixel (f/1.8)25-megapixel (f/2.0)20-megapixel (f/2.0, 1.8-micron) + 2-megapixel5-megapixel (f/2.2)
software
Operating systemAndroid 8.1Android 8.1 OreoAndroidAndroid 8.1
SkinFuntouch OS 4.5ColorOS 5.2MIUIFunTouch OS 4.0
connectivity
Wi-FiYesYesYesYes
GPSYesYesYesYes
BluetoothYes, v 5.00Yes, v 4.20Yes, v 5.00Yes, v 5.00
USB OTGYesYes--
Micro-USBYesYesYesYes
Headphones3.5mm3.5mm-3.5mm
FMYesYes--
Number of SIMs2222
Wi-Fi standards supported-802.11 a/b/g/n/ac-802.11 b/g/n
Active 4G on both SIM cards-YesYes-
NFC--No-
Wi-Fi Direct---Yes
sim 1
SIM TypeNano-SIMNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sim 2
SIM TypeNano-SIMNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sensors
Face unlockYesYes--
Fingerprint sensorNoYesYes-
Compass/ MagnetometerYesYes-Yes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYes--
GyroscopeYesYes--
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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