O2 XDA Atom vs Xiaomi MI-2a

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

    MI-2a: 7 g lighter

    XDA Atom:
    140 g
    MI-2a:
    133 g
  • Width

    XDA Atom: 8.5 mm narrower

    XDA Atom:
    58 mm
    MI-2a:
    66.5 mm
  • Screen diagonal

    XDA Atom: 1.8 in smaller diagonal

    XDA Atom:
    2.7 in
    MI-2a:
    4.5 in
  • Depth

    MI-2a: 9 mm thinner

    XDA Atom:
    18.5 mm
    MI-2a:
    9.5 mm
  • Height

    XDA Atom: 31 mm shorter

    XDA Atom:
    102 mm
    MI-2a:
    133 mm
  • Release year

    XDA Atom:
    2005
    MI-2a:
    2013

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 Atom

    Height:
    102 mm
    Width:
    58 mm
    Depth:
    18.5 mm +9 mm versus MI-2a
  2. 2. MI-2a

    Height:
    133 mm +31 mm versus XDA Atom
    Width:
    66.5 mm +8.5 mm versus XDA Atom
    Depth:
    9.5 mm

Weight

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

  1. 1. XDA Atom

    140 g

    +7 g versus MI-2a

  2. 2. MI-2a

    133 g

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 Atom

    Screen diagonal:
    2.7 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    22.6 cm²
  2. 2. MI-2a

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    55.8 cm²

MI-2a has approximately 147.3% more rectangular screen area than XDA Atom.

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 Atom, MI-2a, compared at the same storage capacity.
StorageXDA AtomMI-2a
16 GB Unknown 1 GB RAM
XDA Atom: Original memory entry

64 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 Atom

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

2. MI-2a

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

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 Atom

    1530 mAh

  2. 2. MI-2a

    2030 mAh

    +500 mAh versus XDA Atom

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 Atom2. MI-2a

Everyday essentials
Everyday essentials — specifications for XDA Atom, MI-2a.
SpecificationXDA AtomMI-2a
Dimensions (HxWxD)
  • 102 Х 58 Х 18.5 mm
  • 133 Х 66.5 Х 9.5 mm
Weight
  • 140 g
  • 133 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.7" inch
  • 4.5" inch
Screen resolution
  • 240 x 320 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 MB RAM
  • 128 MB ROM
  • 16 GB
  • 1 GB RAM
Memory card support
  • miniSD
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1530 mAh
  • Removable Li-Po
  • 2030 mAh
  • Removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 5.0 PocketPC
  • Android 4.1 (Jelly Bean)
Chipset Unknown
  • Xiaolong S4 Pro
NFC Unknown
  • Yes
Headphone jack
  • No
  • Yes
Display
Display — specifications for XDA Atom, MI-2a.
SpecificationXDA AtomMI-2a
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 22.6 cm2
  • 55.8 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 38.2%
  • 63.1%
PPI /points per inch/
  • 148 PPI
  • 326 PPI
Camera and Video
Camera and Video — specifications for XDA Atom, MI-2a.
SpecificationXDA AtomMI-2a
Rear camera, main
  • 2 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 2 MP
  • 8 MP
  • AF
  • f/2.0
Functions
  • LED flash
  • LED flash
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 2 MP
  • Single
Specifications Unknown
  • 2 MP
Performance

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

Performance — specifications for XDA Atom, MI-2a.
SpecificationXDA AtomMI-2a
Processor CPU
  • Intel PXA272 416 MHz
  • Dual-core 1.7 GHz
Graphics processor GPU Unknown
  • Adreno 320
Antutu 7 score * Unknown
  • 21326
GeekBench 4 Single Core * Unknown
  • 742
GeekBench 4 Multi-Core * Unknown
  • 1151
GeekBench 4 RenderScript * Unknown
  • 1277
General specs
General specs — specifications for XDA Atom, MI-2a.
SpecificationXDA AtomMI-2a
Release date
  • 2005
  • November
  • 2013
Colors
  • Silver
  • Black (front panel)
  • 4 color options (back panel)
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 260 EUR
Unknown
Battery life
  • Stand by time- Up to 150 h Talking time- Up to 5 h 30 min
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for XDA Atom, MI-2a.
SpecificationXDA AtomMI-2a
SIM card
  • Mini-SIM
  • Mini-SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed Unknown
  • HSPA 21.1/5.76 Mbps
GPRS
  • Class 10
  • Class 12
Edge
  • Class 10
  • Class 12
Wi-Fi
  • Wi-Fi 802.11b
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
USB
  • miniUSB
  • microUSB 2.0
  • USB Host
Bluetooth
  • 1.2
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for XDA Atom, MI-2a.
SpecificationXDA AtomMI-2a
Radio
  • FM radio
  • FM radio
Others
  • Handwriting recognition
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for XDA Atom, MI-2a.
SpecificationXDA AtomMI-2a
Dop
  • Infrared port - Pocket Office -MP3/AAC/AAC+/WMA/OGG/AMR player -WMV/MP4 player - Produced by Quanta Computer. Functionally identical to HP iPAQ rw6815
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass