Xiaomi Mi 8 SE 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.

  • Display technology

    OLED versus LCD

    Mi 8 SE:
    OLED
    Redmi Note 9S:
    LCD
  • Weight

    Mi 8 SE: 45 g lighter

    Mi 8 SE:
    164 g
    Redmi Note 9S:
    209 g
  • Width

    Mi 8 SE: 3.6 mm narrower

    Mi 8 SE:
    73.1 mm
    Redmi Note 9S:
    76.7 mm
  • Screen diagonal

    Mi 8 SE: 0.79 in smaller diagonal

    Mi 8 SE:
    5.88 in
    Redmi Note 9S:
    6.67 in
  • Chipset

    Mi 8 SE:
    Qualcomm SDM710 Snapdragon 710 (10 nm)
    Redmi Note 9S:
    Qualcomm SM7125 Snapdragon 720G (8 nm)
  • Rear camera layout

    Mi 8 SE:
    Dual
    Redmi Note 9S:
    Quad

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. Mi 8 SE

    Height:
    147.3 mm
    Width:
    73.1 mm
    Depth:
    7.5 mm
  2. 2. Redmi Note 9S

    Height:
    165.8 mm +18.5 mm versus Mi 8 SE
    Width:
    76.7 mm +3.6 mm versus Mi 8 SE
    Depth:
    8.8 mm +1.3 mm versus Mi 8 SE

Weight

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

  1. 1. Mi 8 SE

    164 g

  2. 2. Redmi Note 9S

    209 g

    +45 g versus Mi 8 SE

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. Mi 8 SE

    Screen diagonal:
    5.88 in
    Aspect ratio (height:width):
    18.7:9
    Approximate rectangular screen area:
    87.2 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 23.2% more rectangular screen area than Mi 8 SE.

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 Mi 8 SE, Redmi Note 9S, compared at the same storage capacity.
StorageMi 8 SERedmi Note 9S
64 GB Unknown 4 GB RAM
128 GB Unknown 6 GB RAM
Mi 8 SE: Original memory entry

128 GB · 6 GB RAM 64 GB · 4/6 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. Mi 8 SE

NFC:
Unknown
Headphone jack:
No
Memory card support:
No

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. Mi 8 SE

    3120 mAh

  2. 2. Redmi Note 9S

    5020 mAh

    +1900 mAh versus Mi 8 SE

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. Mi 8 SE2. Redmi Note 9S

Everyday essentials
Everyday essentials — specifications for Mi 8 SE, Redmi Note 9S.
SpecificationMi 8 SERedmi Note 9S
Dimensions (HxWxD)
  • 147.3 Х 73.1 Х 7.5 mm
  • 165.8 Х 76.7 Х 8.8 mm
Weight
  • 164 g
  • 209 g
Technology
  • Super AMOLED
  • IPS LCD
Screen size
  • 5.88" inch
  • 6.67" inch
Screen resolution
  • 1080 x 2244 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 GB
  • 6 GB RAM 64 GB
  • 4/6 GB RAM
  • 64GB 4GB RAM
  • 128GB 6GB RAM
Memory card support
  • No
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3120 mAh
  • Non-removable Li-Po
  • 5020 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 (Oreo); MIUI 9.5
  • Android 10.0; MIUI 11
Chipset
  • Qualcomm SDM710 Snapdragon 710 (10 nm)
  • Qualcomm SM7125 Snapdragon 720G (8 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for Mi 8 SE, Redmi Note 9S.
SpecificationMi 8 SERedmi Note 9S
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 87.6 cm2
  • 107.4 cm2
Screen format
  • 18.7:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 81.3%
  • 84.5%
PPI /points per inch/
  • 423 PPI
  • 395 PPI
Screen protection
  • Corning Gorilla Glass 5
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Mi 8 SE, Redmi Note 9S.
SpecificationMi 8 SERedmi Note 9S
Rear camera, main
  • 12 MP
  • Dual
  • 48 MP
  • Quad
Camera specs
  • 12 MP
  • f/1.9
  • 1/2.55''
  • 1.4µm
  • dual pixel PDAF -5 MP
  • f/2.0
  • 1.12µm
  • 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
  • LED flash
  • HDR
  • panorama
  • HDR
  • panorama
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 20 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 20 MP
  • f/2.0
  • 1.0µm
  • 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 Mi 8 SE, Redmi Note 9S.
SpecificationMi 8 SERedmi Note 9S
Processor CPU
  • Octa-core (2x2.2 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver)
  • Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver)
Graphics processor GPU
  • Adreno 616
  • Adreno 618
GeekBench 4 Single Core *
  • 1823
Unknown
GeekBench 4 Multi-Core *
  • 5718
Unknown
GeekBench 4 RenderScript *
  • 6683
Unknown
Antutu 8 score *
  • 218159
Unknown
GeekBench 5 Single Core *
  • 385
Unknown
GeekBench 5 Multi-Core *
  • 1428
Unknown
General specs
General specs — specifications for Mi 8 SE, Redmi Note 9S.
SpecificationMi 8 SERedmi Note 9S
Release date
  • 2018
  • May
  • 2020
  • March 23
Colors
  • Gray
  • Blue
  • Red
  • Gold
  • Aurora Blue
  • Glacier white
  • Interstellar Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 260 EUR
  • $ 199
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • glass back (Gorilla Glass 5)
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for Mi 8 SE, Redmi Note 9S.
SpecificationMi 8 SERedmi 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 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 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 42.2/5.76 Mbps
  • LTE-A Cat15 800/150 Mbps
  • 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
  • GALILEO
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • Type-C 1.0 reversible connector
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Mi 8 SE, Redmi Note 9S.
SpecificationMi 8 SERedmi Note 9S
Radio
  • No
  • FM radio
  • recording
Others
  • HDR10 -DCI-P3
  • Active noise cancellation with dedicated mic
  • 450 nits typ. brightness (advertised)
Other features
Other features — specifications for Mi 8 SE, Redmi Note 9S.
SpecificationMi 8 SERedmi Note 9S
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast battery charging (Quick Charge 3.0)
  • Sensors Fingerprint (side-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast charging 18W - Splash-proof