O2 XDA Star 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 Star: 89 g lighter

    XDA Star:
    120 g
    Redmi Note 9S:
    209 g
  • Width

    XDA Star: 21.7 mm narrower

    XDA Star:
    55 mm
    Redmi Note 9S:
    76.7 mm
  • Screen diagonal

    XDA Star: 4.07 in smaller diagonal

    XDA Star:
    2.6 in
    Redmi Note 9S:
    6.67 in
  • Chipset

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

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

    Redmi Note 9S: 7 mm thinner

    XDA Star:
    15.8 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 Star

    Height:
    107 mm
    Width:
    55 mm
    Depth:
    15.8 mm +7 mm versus Redmi Note 9S
  2. 2. Redmi Note 9S

    Height:
    165.8 mm +58.8 mm versus XDA Star
    Width:
    76.7 mm +21.7 mm versus XDA Star
    Depth:
    8.8 mm

Weight

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

  1. 1. XDA Star

    120 g

  2. 2. Redmi Note 9S

    209 g

    +89 g versus XDA Star

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 Star

    Screen diagonal:
    2.6 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    20.9 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 413.1% more rectangular screen area than XDA Star.

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

96 MB RAM · 128 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 Star

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 Star

    1120 mAh

  2. 2. Redmi Note 9S

    5020 mAh

    +3900 mAh versus XDA Star

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 Star2. Redmi Note 9S

Everyday essentials
Everyday essentials — specifications for XDA Star, Redmi Note 9S.
SpecificationXDA StarRedmi Note 9S
Dimensions (HxWxD)
  • 107 Х 55 Х 15.8 mm
  • 165.8 Х 76.7 Х 8.8 mm
Weight
  • 120 g
  • 209 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.6" 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.
  • 96 MB RAM
  • 128 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.
  • 1120 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 Star, Redmi Note 9S.
SpecificationXDA StarRedmi Note 9S
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 20.9 cm2
  • 107.4 cm2
Screen format
  • 4:3 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 35.6%
  • 84.5%
PPI /points per inch/
  • 154 PPI
  • 395 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for XDA Star, Redmi Note 9S.
SpecificationXDA StarRedmi Note 9S
Rear camera, main
  • 2 MP
  • Single
  • 48 MP
  • Quad
Camera specs
  • 2 MP
  • 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
  • CIF videocall camera
  • 16 MP
  • f/2.5
  • (wide)
  • 1.0µm
Performance
Performance — specifications for XDA Star, Redmi Note 9S.
SpecificationXDA StarRedmi 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 Star, Redmi Note 9S.
SpecificationXDA StarRedmi Note 9S
Release date
  • 2007
  • October
  • 2020
  • March 23
Colors
  • Black
  • 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 250 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 Star, Redmi Note 9S.
SpecificationXDA StarRedmi 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
  • Yes
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • miniUSB
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 2.0
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for XDA Star, Redmi Note 9S.
SpecificationXDA StarRedmi Note 9S
Radio
  • No
  • FM radio
  • recording
Others
  • TouchFLO finger swipe navigation -Handwriting recognition
  • 450 nits typ. brightness (advertised)
Other features
Other features — specifications for XDA Star, Redmi Note 9S.
SpecificationXDA StarRedmi Note 9S
Dop
  • Pocket Office -Voice memo -MP3/AAC player HTC Nike platform
  • Sensors Fingerprint (side-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast charging 18W - Splash-proof