Xiaomi Redmi Note 8 vs Xiaomi Redmi Note 9S

Compare recorded specifications, size and practical differences.

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Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

  • Weight

    Redmi Note 8: 19 g lighter

    Redmi Note 8:
    190 g
    Redmi Note 9S:
    209 g
  • Width

    Redmi Note 8: 1.4 mm narrower

    Redmi Note 8:
    75.3 mm
    Redmi Note 9S:
    76.7 mm
  • Screen diagonal

    Redmi Note 8: 0.37 in smaller diagonal

    Redmi Note 8:
    6.3 in
    Redmi Note 9S:
    6.67 in
  • Chipset

    Redmi Note 8:
    Qualcomm SDM665 Snapdragon 665 (11 nm)
    Redmi Note 9S:
    Qualcomm SM7125 Snapdragon 720G (8 nm)
  • Height

    Redmi Note 8: 7.5 mm shorter

    Redmi Note 8:
    158.3 mm
    Redmi Note 9S:
    165.8 mm
  • Release year

    Redmi Note 8:
    2019
    Redmi Note 9S:
    2020

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

  1. 1. Redmi Note 8

    Height:
    158.3 mm
    Width:
    75.3 mm
    Depth:
    8.4 mm
  2. 2. Redmi Note 9S

    Height:
    165.8 mm +7.5 mm versus Redmi Note 8
    Width:
    76.7 mm +1.4 mm versus Redmi Note 8
    Depth:
    8.8 mm

Weight

Bars start at zero and share a scale within this chart.

  1. 1. Redmi Note 8

    190 g

  2. 2. Redmi Note 9S

    209 g

    +19 g versus Redmi Note 8

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

  1. 1. Redmi Note 8

    Screen diagonal:
    6.3 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    97.4 cm²
  2. 2. Redmi Note 9S

    Screen diagonal:
    6.67 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    107.4 cm²

Redmi Note 9S has approximately 10.2% more rectangular screen area than Redmi Note 8.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for Redmi Note 8, Redmi Note 9S, compared at the same storage capacity.
StorageRedmi Note 8Redmi Note 9S
32 GB 3 GB RAM Not recorded
64 GB Recorded for all phones 4 / 6 GB RAM Alternative RAM configurations 4 GB RAM
128 GB Recorded for all phones 4 / 6 GB RAM Alternative RAM configurations 6 GB RAM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Redmi Note 8

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (dedicated slot)

2. Redmi Note 9S

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSDXC (dedicated slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

  1. 1. Redmi Note 8

    4000 mAh

  2. 2. Redmi Note 9S

    5020 mAh

    +1020 mAh versus Redmi Note 8

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Redmi Note 82. Redmi Note 9S

Everyday essentials
Everyday essentials — specifications for Redmi Note 8, Redmi Note 9S.
SpecificationRedmi Note 8Redmi Note 9S
Dimensions (HxWxD)
  • 158.3 Х 75.3 Х 8.4 mm
  • 165.8 Х 76.7 Х 8.8 mm
Weight
  • 190 g
  • 209 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 6.3" inch
  • 6.67" inch
Screen resolution
  • 1080 x 2340 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32GB 3GB RAM
  • 64GB 4GB RAM
  • 64GB 6GB RAM
  • 128GB 4GB RAM
  • 128GB 6GB RAM
  • 64GB 4GB RAM
  • 128GB 6GB RAM
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4000 mAh
  • Non-removable Li-Po
  • 5020 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 9.0 (Pie); MIUI 10
  • Android 10.0; MIUI 11
Chipset
  • Qualcomm SDM665 Snapdragon 665 (11 nm)
  • Qualcomm SM7125 Snapdragon 720G (8 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Redmi Note 8, Redmi Note 9S.
SpecificationRedmi Note 8Redmi Note 9S
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 97.4 cm2
  • 107.4 cm2
Screen format
  • 19.5:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 81.7%
  • 84.5%
PPI /points per inch/
  • 409 PPI
  • 395 PPI
Screen protection
  • Corning Gorilla Glass 5
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Redmi Note 8, Redmi Note 9S.
SpecificationRedmi Note 8Redmi Note 9S
Rear camera, main
  • 48 MP
  • Quad
  • 48 MP
  • Quad
Camera specs
  • 48 MP
  • f/1.8
  • 26mm (wide)
  • 1/2"
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4"
  • 1.12µm -2 MP
  • f/2.4
  • 1/5"
  • 1.75µm (dedicated macro camera) -2 MP
  • 1.75µm
  • depth sensor
  • 48 MP
  • f/1.8
  • 26mm (wide)
  • 1/2.0''
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4.0''
  • 1.12µm -5 MP
  • f/2.4
  • (macro)
  • 1.12µm -2 MP
  • (depth)
Functions
  • HDR
  • panorama
  • HDR
  • panorama
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 13 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 13 MP
  • f/2.0
  • 1.12µm
  • 16 MP
  • f/2.5
  • (wide)
  • 1.0µm
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Redmi Note 8, Redmi Note 9S.
SpecificationRedmi Note 8Redmi Note 9S
Processor CPU
  • Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
  • Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver)
Graphics processor GPU
  • Adreno 610
  • Adreno 618
Antutu 7 score *
  • 143740
Unknown
GeekBench 4 Single Core *
  • 1499
Unknown
GeekBench 4 Multi-Core *
  • 5543
Unknown
Antutu 8 score *
  • 173592
Unknown
GeekBench 5 Single Core *
  • 309
Unknown
GeekBench 5 Multi-Core *
  • 1328
Unknown
General specs
General specs — specifications for Redmi Note 8, Redmi Note 9S.
SpecificationRedmi Note 8Redmi Note 9S
Release date
  • 2019
  • August
  • 2020
  • March 23
Colors
  • Neptune Blue
  • Moonlight White
  • Space Black
  • Aurora Blue
  • Glacier white
  • Interstellar Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 190 EUR
  • $ 199
Body build
  • Front/back glass (Gorilla Glass 5)
  • Glass front (Gorilla Glass 5)
  • glass back (Gorilla Glass 5)
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for Redmi Note 8, Redmi Note 9S.
SpecificationRedmi Note 8Redmi Note 9S
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 38(2600)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 28(700)
  • 38(2600)
  • 40(2300)
Speed
  • HSPA 42.2/11.5 Mbps
  • LTE-A
  • HSPA 42.2/5.76 Mbps
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 4.2
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Harmful irradiation
  • SAR - 0.26 W/kg (head) 1.00 W/kg (body) SAR EU - 0.26 W/kg (head) 1.00 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Redmi Note 8, Redmi Note 9S.
SpecificationRedmi Note 8Redmi Note 9S
Radio
  • FM radio
  • FM radio
  • recording
Others Unknown
  • 450 nits typ. brightness (advertised)
Other features
Other features — specifications for Redmi Note 8, Redmi Note 9S.
SpecificationRedmi Note 8Redmi Note 9S
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast battery charging 18W
  • Sensors Fingerprint (side-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast charging 18W - Splash-proof