Want to compare Vivo S1 vs Redmi Note 9 mobile? You have come to the right place. Here you can find Vivo S1 vs Redmi Note 9 comparison based on display size, processor speed, camera resolution, user experience, memory size, connectivity strength, and overall dimension.

Related: Check out latest Vivo S1 price on Priceo.

On one hand, Vivo S1 offers a good-looking design, long-lasting battery life, and dependable performance. It also offers better performance to boot, along with sharper cameras at the back. It has a 6.38-inch Super AMOLED display, which has a pixel density of 404 PPI. The Vivo S1 is armed with a triple camera setup consisting of 16MP, 8MP, and 2MP lenses.

On the other hand, on Redmi Note 9 you get access to a lot of stunning specs including an impressive quad-camera and selfie shooter setup, decent RAM and processor duo, backed by a powerful 5,020mAh battery. The Xiaomi device offers a stunning AI Quad-camera setup at its rear side, featuring a 48MP f/1.79 Primary ISOCELL Plus sensor, an 8MP f/2.2 ultra wide lens for amazing photography and cinematography.

Our recommendation: We recommend buying Vivo S1 over Redmi Note 9 due to its faster performance and higher internal storage options.

Vivo S1 vs Redmi Note 9 Comparison Table

Key Specs
Display6.53-inch6.38-inch
ProcessorMediaTek Helio G85MediaTek Helio P65
Front Camera13-megapixel32-megapixel
Rear Camera48-megapixel + 8-megapixel + 2-megapixel + 2-megapixel16-megapixel + 8-megapixel + 5-megapixel
RAM4GB4GB
Storage64GB128GB
Battery Capacity5020mAh4500mAh
OSAndroid 10Android Pie
Resolution1080×2340 pixels1080×2340 pixels
Ratings
Overall RatingRead ReviewRead Review
Design Rating  
Display Rating  
Software Rating  
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Battery Life Rating  
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Value for Money Rating  
General
BrandXiaomiVivo
ModelRedmi Note 9S1
Release dateApril 30, 2020July 1, 2019
Launched in IndiaYesYes
Form factorTouchscreenTouchscreen
Dimensions (mm)162.30 x 77.20 x 8.90159.53 x 75.23 x 8.13
Weight (g)199.00179.00
Battery capacity (mAh)50204500
Fast chargingProprietaryProprietary
ColoursAqua Green, Arctic White, Pebble Grey, Scarlet RedSkyline Blue, Diamond Black
Removable batteryNo
Wireless chargingNo
Display
Screen size (inches)6.536.38
TouchscreenYesYes
Resolution1080×2340 pixels1080×2340 pixels
Aspect ratio19.5:919.5:9
Hardware
Processor1.8GHz octa-core (6×1.8GHz + 2x2GHz)octa-core
Processor makeMediaTek Helio G85MediaTek Helio P65 (MT6768)
RAM4GB4GB
Internal storage64GB128GB
Expandable storageYesNo
Expandable storage typemicroSD
Expandable storage up to (GB)512
Dedicated microSD slotYesNo
Camera
Rear camera48-megapixel (f/1.79) + 8-megapixel (f/2.2) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)16-megapixel (f/1.78) + 8-megapixel (f/2.2) + 5-megapixel (f/2.4)
Rear autofocusYes
Rear flashYes
Front camera13-megapixel32-megapixel (f/2.0)
Software
Operating systemAndroid 10Android Pie
SkinMIUI 11Funtouch OS 9
Connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n
GPSYesYes
BluetoothYes, v 5.00Yes, v 5.00
NFCYes
InfraredYes
USB Type-CYes
Headphones3.5mm
Number of SIMs22
USB OTGYes
Sim 1
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSM
3GYes
4G/ LTEYes
Sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSM
3GYes
4G/ LTEYes
Sensors
Face unlockYes
Fingerprint sensorYesYes
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYesYes