Vivo Y91 vs Redmi Note 7 vs Oppo A7 vs Nokia 3.1 Plu comparison

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key specs
Display6.22-inch6.30-inch6.20-inch6.00-inch
ProcessorMediaTek Helio P22 Qualcomm Snapdragon 660-MediaTek Helio P22
Front Camera8-megapixel 13-megapixel 16-megapixel8-megapixel
Rear Camera13-megapixel + 2-megapixel 12-megapixel + 2-megapixel13-megapixel + 2-megapixel 13-megapixel + 5-megapixel
RAM2GB4GB4GB3GB
Storage32MB64GB64GB32GB
Battery Capacity4030mAh4000mAh4230mAh3500mAh
OSAndroid 8.1Android 9.0Android 8.1Android 8.1 Oreo
Resolution720x1520 pixels1080x2340 pixels-720x1440 pixels
general
BrandVivoXiaomiOppoNokia
ModelY91Redmi Note 7A73.1 Plus
Release dateJanuary 1, 2019January 1, 2019November 1, 2018October 1, 2018
Launched in IndiaYesYesYesYes
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)155.11 x 75.09 x 8.28159.21 x 75.21 x 8.10155.90 x 75.40 x 8.10156.68 x 76.44 x 8.19
Weight (g)163.50185.00168.00180.00
Battery capacity (mAh)4030400042303500
ColoursStarry Black, Ocean BlueOnyx Black, Ruby Red, Sapphire BlueGlaring Gold, Glaze BlueBlue, White, Baltic
Body type-GlassPlasticMetal
Removable battery-NoNoNo
Fast charging-Quick Charge--
Wireless charging-No-No
SAR value-0.961.37-
display
Screen size (inches)6.226.306.206.00
TouchscreenYesYesYesYes
Resolution720x1520 pixels1080x2340 pixels-720x1440 pixels
Protection type-Gorilla Glass--
Aspect ratio-19.5:919.5:918:9
Pixels per inch (PPI)-409--
hardware
Processorocta-core2.2GHz-1.5GHz octa-core (4x2GHz + 4x1.5GHz)
Processor makeMediaTek Helio P22 (MT6762R)Qualcomm Snapdragon 660Qualcomm Snapdragon 450MediaTek Helio P22 (MT6762)
RAM2GB4GB4GB3GB
Internal storage32MB64GB64GB32GB
Expandable storageYesYesYesYes
Expandable storage typemicroSDmicroSDmicroSDmicroSD
Expandable storage up to (GB)256256256-
Dedicated microSD slotYesNoYesYes
camera
Rear camera13-megapixel (f/f/2.2) + 2-megapixel (f/f/2.4)12-megapixel (f/2.2, 1.25-micron) + 2-megapixel13-megapixel (f/2.2) + 2-megapixel (f/2.4)13-megapixel (f/2.0, 1.12-micron) + 5-megapixel (f/2.4, 1.12-micron)
Rear flashLEDLEDYesLED
Front camera8-megapixel (f/f/1.8)13-megapixel (f/2.0, 1.12-micron)16-megapixel8-megapixel (f/2.2, 1.12-micron)
Front flashNo-NoNo
Rear autofocus-YesYesPhase detection autofocus
Front autofocus--No-
software
Operating systemAndroid 8.1Android 9.0Android 8.1Android 8.1 Oreo
SkinFuntouch OS 4.5MIUI 10ColorOS 5.2-
connectivity
Wi-FiYesYesYesYes
BluetoothYes, v 5.00Yes, v 5.00Yes, v 4.20Yes, v 4.20
NFCNo--No
Micro-USBYes-YesYes
Headphones3.5mm3.5mm3.5mm3.5mm
Number of SIMs2222
Active 4G on both SIM cardsYesYesYesYes
Wi-Fi standards supported-802.11 a/b/g/n/ac802.11 a/b/g/n802.11 b/g/n
GPS-YesYesYes
USB OTG-YesYesYes
USB Type-C-Yes-No
FM-YesYesYes
Infrared---No
sim 1
SIM TypeNano-SIMNano-SIM-Nano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sim 2
SIM TypeNano-SIMNano-SIM-Nano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sensors
Face unlockYesYesYesYes
Fingerprint sensorYesYesYesYes
Compass/ MagnetometerYes-YesYes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYesYesYes
GyroscopeYesYesYesYes
Barometer---No
Temperature sensor---No
ratings
Overall NDTV Rating-Read ReviewRead ReviewRead Review
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-

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