• 6.67" (2400x1080) IPS LCD
  • 4GB/6GB
    Snapdragon 720 SoC
    64GB/128GB Storage
  • 48-MP, f/1.79 Rear: 1 Camera
  • 5020 mAh
  • 6.5" (2400x1080) Super AMOLED
  • 6GB/8GB
    Samsung Exynos 980 SoC
    128GB Storage
  • 48-MP, f/2 Rear: 4 Cameras
  • 4500 mAh

Specifications Highlights
Product NameRedmi Note 9SGalaxy A51 5G
ProductRedmi Note 9S (2020)Galaxy A51 5G (2020), Price: 499.99 USD at Amazon
Display6.67" 2400x1080 IPS LCD 6.5" 2400x1080 Super AMOLED
Rear Camera(s)
  • 48-MP f/1.79 (Primary)
  • 26mm 48-MP f/2 (Primary)
  • 13mm 12-MP f/2.2
  • 5-MP f/2.2 +Bokeh Sensor
  • 40mm 5-MP f/2
Selfie Camera(s)
  • 16-MP f/2.48
  • 32-MP f/2.2
Computing
  • Snapdragon 720 SoC
  • 4GB/6GB RAM
  • 64GB/128GB Storage
  • MicroSDXC
  • Samsung Exynos 980 SoC
  • 6GB/8GB RAM
  • 128GB Storage
  • MicroSDXC
Battery5020 mAh4500 mAh
DesignIP Rating, 209g (7.4oz), 76.68x165.75x8.8 mm (3.02 x 6.53 x 0.35 inches)IP Rating, 187g (6.6oz), 73.6x158.9x8.7 mm (2.90 x 6.26 x 0.34 inches)
Price (Market)$499.99
Price at Launch$499.99
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Display
Product NameRedmi Note 9SGalaxy A51 5G
TypeIPS LCDSuper AMOLED
Diagonal (inches)6.67"6.5"
Display/Body Ratio84.5%87.2%
Resolution2400x10802400x1080
Sharpness (PPI)395 PPI405 PPI
Brightness (specs)450 NITs
Display Glass TypeGorilla Glass 5
Features
  • Multitouch
  • Glossy
  • 2.5D
  • Multitouch
  • Glossy
Color Depth24 bit (16,777,216 Colors)24 bit (16,777,216 Colors)
Primary Camera
Product NameRedmi Note 9SGalaxy A51 5G
Megapixel48-MP48-MP
Aperturef/1.79f/2
Focal Length (35mm) 26mm
Sensor SizeMediumMedium
Autofocus Features
  • Phase Detection
Hardware Features
  • LED Flash
  • Quad Bayer
Video Resolutions
  • 720p/960fps
  • 1080p/120fps
  • 2160p/30fps
Ultrawide Camera
Product NameGalaxy A51 5G
Megapixel12-MP
Aperturef/2.2
Focal Length (35mm) 13mm
Sensor SizeSmall
Macro Camera
Product NameGalaxy A51 5G
Megapixel5-MP
Aperturef/2
Focal Length (35mm) 40mm
Sensor SizeVery small
Hardware Features
  • Macro Lens
Battery
Product NameRedmi Note 9SGalaxy A51 5G
Battery TypeLi-PolyLi-Ion
Battery Capacity (mAh)5020 mAh4500 mAh
Battery Features
  • Fast Charge
  • Non-Removable
  • Fast Charge
  • Non-Removable
Computing
Product NameRedmi Note 9SGalaxy A51 5G
Processor BrandQualcomm
Processor NameSnapdragon 720Samsung Exynos 980
Processor # Cores88
Main Processor Frequency (GHz)2.3 GHz2.2 GHz
RAM Options4GB/6GB6GB/8GB
Internal Storage Options64GB/128GB128GB
Memory Card TypeMicroSDXCMicroSDXC
Operating System + VersionAndroid 10Android 10
Communications
Product NameRedmi Note 9SGalaxy A51 5G
LTE Category (Download)LTE CAT12 603 Mbps
LTE Bands1, 3, 40, 41, 5, 7, 81, 3, 5, 7, 8
Modem Features
  • UMTS
  • EDGE
  • GPRS
  • HSPA+
  • LTE
  • EV-DO A
  • TD-SCDMA
  • TD-HSDPA
  • UMTS
  • EDGE
  • GPRS
  • HSPA+
  • LTE
  • 5G NSA
  • 5G SA
WiFi Speed
  • a
  • b
  • g
  • n
  • ac
  • a
  • b
  • g
  • n
  • ac
WiFi Features
  • Dual-band
  • Hotspot
  • WiFi Direct
  • Dual-band
  • Hotspot
  • WiFi Direct
Bluetooth VersionBluetooth 5.0Bluetooth 5.0
Bluetooth Features
  • A2DP
  • BT EDR
  • HID
  • BT LE
  • A2DP
  • AVRCP
  • DIP
  • HFP
  • HID
  • HSP
  • MAP
  • OPP
  • PAN
  • PBAP/PAB
NFC Features
  • NFC Supported
Connector TypeUSB Type CUSB Type C
Connector Features
  • USB 2.0
  • USB OTG
  • USB 2.0
  • USB OTG
SAR US Head0.8 W/Kg
SAR US Body0.67 W/Kg
SAR EU Head0.369 W/Kg
SAR EU Body1.59 W/Kg
Sim Card 0
Product NameRedmi Note 9SGalaxy A51 5G
NameSIM0SIM0
SIM TypeNano SIMNano SIM
Sim Card 1
Product NameRedmi Note 9SGalaxy A51 5G
NameSIM1SIM1
SIM TypeNano SIMNano SIM
Multimedia
Product NameRedmi Note 9SGalaxy A51 5G
Multimedia Features
  • IR
Audio Features
  • Loudspeaker
  • FM Radio
  • 3.5mm Port
  • Loudspeaker
  • FM Radio
  • 3.5mm Port
Audio Formats
  • AAC
  • 3GA
  • AMR
  • RA
  • AWB
  • FLAC
  • MID
  • MIDI
  • MP3
  • OGA
  • OGG
  • WMA
  • WAV
  • AAC
  • 3GA
  • AMR
  • RA
  • AWB
  • FLAC
  • M4A
  • MID
  • MIDI
  • MP3
  • OGA
  • OGG
  • WMA
  • WAV
Video Formats
  • DIVX
  • H.263
  • H.264
  • MPEG-4
  • H.265
  • MP4
  • VC-1
  • XVID
  • H.263
  • H.264
  • MPEG-4
  • H.265
  • MP4
  • VC-1
  • VP8
  • VP9
  • WMV7
  • WMV8
  • XVID
Sensors
  • Proximity
  • Accelerometer
  • Compass
  • Gyroscope
  • Fingerprint
  • GPS
  • A-GPS
  • GLONASS
  • Galileo
  • Proximity
  • Accelerometer
  • Compass
  • Gyroscope
  • Fingerprint
  • GPS
  • A-GPS
  • GLONASS
  • BeiDou
  • Galileo

Xiaomi Redmi Note 9S vs. Samsung Galaxy A51 5G Specs & Speed Benchmarks

Battery Capacity (mAh)

Higher is better