O2 XDA Stellar 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

    XDA Stellar: 19 g lighter

    XDA Stellar:
    190 g
    Redmi Note 9S:
    209 g
  • Width

    XDA Stellar: 17.7 mm narrower

    XDA Stellar:
    59 mm
    Redmi Note 9S:
    76.7 mm
  • Screen diagonal

    XDA Stellar: 3.87 in smaller diagonal

    XDA Stellar:
    2.8 in
    Redmi Note 9S:
    6.67 in
  • Chipset

    XDA Stellar:
    Qualcomm MSM7200
    Redmi Note 9S:
    Qualcomm SM7125 Snapdragon 720G (8 nm)
  • Rear camera layout

    XDA Stellar:
    Single
    Redmi Note 9S:
    Quad
  • Depth

    Redmi Note 9S: 9.8 mm thinner

    XDA Stellar:
    18.6 mm
    Redmi Note 9S:
    8.8 mm

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. XDA Stellar

    Height:
    112 mm
    Width:
    59 mm
    Depth:
    18.6 mm +9.8 mm versus Redmi Note 9S
  2. 2. Redmi Note 9S

    Height:
    165.8 mm +53.8 mm versus XDA Stellar
    Width:
    76.7 mm +17.7 mm versus XDA Stellar
    Depth:
    8.8 mm

Weight

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

  1. 1. XDA Stellar

    190 g

  2. 2. Redmi Note 9S

    209 g

    +19 g versus XDA Stellar

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. XDA Stellar

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 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 342.4% more rectangular screen area than XDA Stellar.

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 XDA Stellar, Redmi Note 9S, compared at the same storage capacity.
StorageXDA StellarRedmi Note 9S
64 GB Unknown 4 GB RAM
128 GB Unknown 6 GB RAM
XDA Stellar: Original memory entry

128 MB RAM · 256 MB ROM

Practical features

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

1. XDA Stellar

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD

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. XDA Stellar

    1350 mAh

  2. 2. Redmi Note 9S

    5020 mAh

    +3670 mAh versus XDA Stellar

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. XDA Stellar2. Redmi Note 9S

Everyday essentials
Everyday essentials — specifications for XDA Stellar, Redmi Note 9S.
SpecificationXDA StellarRedmi Note 9S
Dimensions (HxWxD)
  • 112 Х 59 Х 18.6 mm
  • 165.8 Х 76.7 Х 8.8 mm
Weight
  • 190 g
  • 209 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.8" inch
  • 6.67" inch
Screen resolution
  • 240 x 320 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 MB RAM
  • 256 MB ROM
  • 64GB 4GB RAM
  • 128GB 6GB RAM
Memory card support
  • microSD
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1350 mAh
  • Removable Li-Ion
  • 5020 mAh
  • Non-removable Li-Po
Operating system OS
  • Microsoft Windows Mobile 6.0 Professional
  • Android 10.0; MIUI 11
Chipset
  • Qualcomm MSM7200
  • Qualcomm SM7125 Snapdragon 720G (8 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for XDA Stellar, Redmi Note 9S.
SpecificationXDA StellarRedmi Note 9S
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 107.4 cm2
Screen format
  • 4:3 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 36.7%
  • 84.5%
PPI /points per inch/
  • 143 PPI
  • 395 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for XDA Stellar, Redmi Note 9S.
SpecificationXDA StellarRedmi Note 9S
Rear camera, main
  • 3.15 MP
  • Single
  • 48 MP
  • Quad
Camera specs
  • 3.15 MP
  • AF
  • 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 Unknown
  • HDR
  • panorama
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 16 MP
  • Single
Specifications
  • VGA videocall camera
  • 16 MP
  • f/2.5
  • (wide)
  • 1.0µm
Performance
Performance — specifications for XDA Stellar, Redmi Note 9S.
SpecificationXDA StellarRedmi Note 9S
Processor CPU
  • 400 MHz ARM 11
  • Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver)
Graphics processor GPU
  • Adreno 130
  • Adreno 618
General specs
General specs — specifications for XDA Stellar, Redmi Note 9S.
SpecificationXDA StellarRedmi Note 9S
Release date
  • 2007
  • November
  • 2020
  • March 23
Colors
  • Silver
  • Aurora Blue
  • Glacier white
  • Interstellar Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • $ 199
Battery life
  • Stand by time- Up to 365 h Talking time- Up to 5 h
Unknown
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • glass back (Gorilla Glass 5)
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for XDA Stellar, Redmi Note 9S.
SpecificationXDA StellarRedmi Note 9S
SIM card
  • Mini-SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • 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 3.6/0.384 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11b/g
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • 2.0
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 2.0
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for XDA Stellar, Redmi Note 9S.
SpecificationXDA StellarRedmi Note 9S
Radio
  • No
  • FM radio
  • recording
Others
  • Handwriting recognition
  • 450 nits typ. brightness (advertised)
Other features
Other features — specifications for XDA Stellar, Redmi Note 9S.
SpecificationXDA StellarRedmi Note 9S
Dop
  • Pocket Office -Business card reader -Voice memo -Media Player 10 HTC Kaiser platform
  • Sensors Fingerprint (side-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast charging 18W - Splash-proof