71 Must-know Xiaomi Redmi Note 9S Specs

Main Camera
Selfie Cam
Key Specs
Release dateMar 31, 2020

Camera Details
Camera Resolution48-megapixel (combined with an 8-megapixel wide-angle cam, a 5-megapixel macro cam, and a 2-megapixel depth sensor)
Camera flashDual LED
Camera Optics6P lens
Camera Options
  • AI watermark
  • Burst mode
  • Cinematic portraits
  • Custom watermark
  • Document mode
  • Face recognition
  • Full screen frame
  • HDR
  • Kaleidoscope
  • Leveling
  • Night mode
  • Panorama mode
  • Photo timer
  • Portrait mode background blurring
  • Pro
  • Steady handheld night photography
  • Ultra wide-angle edge distortion correction
Camera Features
  • AI scene detection (27 recognizable tags)
  • Macro camera
  • 2-10cm AF
Camera ApertureF/1.79 (for main cam, f/2.2 for wide-angle cam, f/2.4 for macro and depth cams)
Camera pixel size1.6 microns (4-in-1 Super Pixel for main cam, 1.75-micron for depth cam)
Camera angle119 ° (for wide-angle lens)
Max Video Resolution3840 x 2160 px
Video frames per second960 (for 720p slow-motion, 60/30fps for standard videos)
Selfie Cam Resolution16-megapixel
Pixel size1
Selfie OptionsAI Beautify, AI portrait mode, Front camera HDR, Palm shutter, Panorama selfie
Selfie FeaturesAI scene detection, AI silhouette detection, Face recognition
Selfie flashScreen flash
Front-cam frames per second120 (Slo-Selfie)
Display size6.7 inches (actual diagonal size is 6.67 inches)
Display dots per inch392.8 DPI
Display Resolution2400 x 1080 px
Display's superficy16.8 square inches
Display's superficy (metric)426.72 square mm
Display finishCorning Gorilla Glass 5
Display total pixels2592000
Display contrast1500:1 nits
Display featuresReading mode 2.0
Processing Power
ProcessorQualcomm Snapdragon 720G (8nm chip with Qualcomm 5th-generation AI engine)
CPU Cores8
Processor Speed2.3GHz
RAM6GB (4GB version also available)
Graphic Processor (GPU)Adreno 618
Physical Features
Weight (grams)209g
Thickness (metric)8.8 mm
Width (metric)76.68 mm
Height (metric)165.75 mm
Grams per cubic cm0.19 g/cu cm
Headset Jack3.5mm
Available colors
  • Aurora Blue
  • Glacier White
  • Interstellar Grey
Included Accessories
  • 22.5W wire charger
  • Simple protective cover
  • SIM eject tool
Ambient light detector (in-screen)
Base technology
  • 8nm process technology
  • GSM (B2/3/5/8)
3G NetworksWCDMA (B1/2/4/5/8)
4G NetworksFDD-LTE (B1/2/3/4/5/7/8/20/28), TDD-LTE (B38/40)
SIM card typeNano SIM (Dual)
Wi-Fi802.11 a/b/g/n/ac (2.4GHz/5GHz)
Wi-Fi Direct
Bluetooth Technology5.0
Infrared communication
ConnectorsUSB Type-C
Storage Memory
Memory128GB (64GB version also available)
Memory ExpansionMicroSD
Expansion LimitUp to 512GB
Battery Life
Usage time780min. (for gaming)
Battery typeLithium-Ion Polymer (built-in)
Battery Power5020mAh
mAh per gram24 mAh/g
mAh per mm thick570 mAh/mm of thickness
mAh per display square in.299mAh/sqrin.
Charging system18W wired fast charging
Music / Multimedia
Audio file formatsAAC, MP3, AMR, FLAC, APE
Speakers1 (1216 X max 0.5mm high-amplitude ultra-linear)
General Specs
Phone lockAI face unlock
Other features
SensorsZ-axis linear vibration motor, Distance, IR blaster, Gyroscope, Accelerometer
Video FormatsM4V, MKV, MP4, WAV, XVID
Location servicesA-GPS, Beidou, GLONASS, Galileo
Sound QualityHD calling, VoLTE
Fingerprint detector
Finish3D-curved glass backing, Micron-level textured coating
CertificationsTÜV Rheinland (for low blue light)


Also called Xiaomi Note 9S.

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* We cannot guarantee that these specs are accurate. We urge you to do a confirmation of the key specs before making a final choice. Cell phone manufacturers sometimes omit certain functions, making it difficult for us to guess whether or not a specific cell phone has a specific function. If you see an error in this list of features, please let us know as soon as possible.

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