Vivo Y91 vs LG Q9 vs Xiaomi Mi A2 vs Redmi Note 5 Pro comparison

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key specs
Display6.22-inch6.10-inch5.99-inch5.99-inch
ProcessorMediaTek Helio P22 Qualcomm Snapdragon 821Qualcomm Snapdragon 660Qualcomm Snapdragon 636
Front Camera8-megapixel 8-megapixel 20-megapixel 20-megapixel
Rear Camera13-megapixel + 2-megapixel 16-megapixel 12-megapixel + 20-megapixel 12-megapixel + 5-megapixel
RAM2GB4GB4GB4GB
Storage32MB32GB64GB64GB
Battery Capacity4030mAh3000mAh3000mAh4000mAh
OSAndroid 8.1Android 8.1 OreoAndroid 8.1 OreoAndroid 7.1.1
Resolution720x1520 pixels1440x3120 pixels1080x2160 pixels1080x2160 pixels
general
BrandVivoLGXiaomiXiaomi
ModelY91Q9Mi A2Redmi Note 5 Pro
Release dateJanuary 1, 2019January 1, 2019July 1, 2018February 1, 2018
Launched in IndiaYesNoYesYes
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)155.11 x 75.09 x 8.28153.20 x 71.90 x 7.90158.70 x 75.40 x 7.30158.60 x 75.40 x 8.05
Weight (g)163.50159.00168.00181.00
Battery capacity (mAh)4030300030004000
ColoursStarry Black, Ocean BlueCarmine Red, Aurora Black, Moroccan BlueBlack, Gold, Lake Blue, Rose GoldBlack, Gold, Lake Blue, Rose Gold
Fast charging-Quick Charge 3.0--
Removable battery--NoNo
Body type---Metal
SAR value---1.19
display
Screen size (inches)6.226.105.995.99
TouchscreenYesYesYesYes
Resolution720x1520 pixels1440x3120 pixels1080x2160 pixels1080x2160 pixels
Aspect ratio-19.5:918:918:9
Pixels per inch (PPI)-564403-
Protection type---Gorilla Glass
hardware
Processorocta-core2.4GHz quad-coreocta-core (4x2.2GHz + 4x1.8GHz)1.8GHz octa-core
Processor makeMediaTek Helio P22 (MT6762R)Qualcomm Snapdragon 821Qualcomm Snapdragon 660Qualcomm Snapdragon 636
RAM2GB4GB4GB4GB
Internal storage32MB32GB64GB64GB
Expandable storageYesYesNoYes
Expandable storage typemicroSDmicroSDmicroSDmicroSD
Expandable storage up to (GB)2562000-128
Dedicated microSD slotYes---
camera
Rear camera13-megapixel (f/f/2.2) + 2-megapixel (f/f/2.4)16-megapixel (f/2.2)12-megapixel (f/1.8, 1.25-micron) + 20-megapixel (f/1.8, 1.0-micron)12-megapixel (f/2.2, 1.25-micron) + 5-megapixel (f/2.0, 1.12-micron)
Rear flashLEDLEDDual LEDLED
Front camera8-megapixel (f/f/1.8)8-megapixel (f/1.9)20-megapixel (f/2.2, 1.0-micron)20-megapixel (f/2.2, 1.0-micron)
Front flashNo-LEDLED
Rear autofocus--Phase detection autofocusPhase detection autofocus
software
Operating systemAndroid 8.1Android 8.1 OreoAndroid 8.1 OreoAndroid 7.1.1
SkinFuntouch OS 4.5--MIUI 9
connectivity
Wi-FiYesYesYesYes
BluetoothYes, v 5.00Yes, v 5.00Yes, v 5.00Yes, v 5.00
NFCNoYesYesNo
Micro-USBYes--Yes
Headphones3.5mm-No3.5mm
Number of SIMs2-22
Active 4G on both SIM cardsYes---
Wi-Fi standards supported-802.11 a/b/g/n/ac802.11 a/b/g/n/ac802.11 b/g/n/ac
GPS-YesYesYes
USB Type-C-Yes--
FM-Yes-Yes
USB OTG--YesYes
Wi-Fi Direct--YesYes
Infrared---No
Mobile High-Definition Link (MHL)---No
sim 1
SIM TypeNano-SIM-Nano-SIMNano-SIM
GSM/CDMAGSM-GSMGSM
3GYes-YesYes
4G/ LTEYes-YesYes
sim 2
SIM TypeNano-SIM-Nano-SIMNano-SIM
GSM/CDMAGSM-GSMGSM
3GYes-YesYes
4G/ LTEYes-YesYes
sensors
Face unlockYes--Yes
Fingerprint sensorYesYesYesYes
Compass/ MagnetometerYes-YesYes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYesYesYes
GyroscopeYes-YesYes
3D face recognition---No
Barometer---No
Temperature sensor---No
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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