Micromax Bolt A51 vs O2 XDA IIi

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

    Bolt A51: 72 g lighter

    Bolt A51:
    118 g
    XDA IIi:
    190 g
  • Width

    Bolt A51: 7.5 mm narrower

    Bolt A51:
    62.5 mm
    XDA IIi:
    70 mm
  • Depth

    Bolt A51: 6.2 mm thinner

    Bolt A51:
    12.8 mm
    XDA IIi:
    19 mm
  • Height

    Bolt A51: 11.5 mm shorter

    Bolt A51:
    118.5 mm
    XDA IIi:
    130 mm
  • Release year

    Bolt A51:
    2013
    XDA IIi:
    2004

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. Bolt A51

    Height:
    118.5 mm
    Width:
    62.5 mm
    Depth:
    12.8 mm
  2. 2. XDA IIi

    Height:
    130 mm +11.5 mm versus Bolt A51
    Width:
    70 mm +7.5 mm versus Bolt A51
    Depth:
    19 mm +6.2 mm versus Bolt A51

Weight

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

  1. 1. Bolt A51

    118 g

  2. 2. XDA IIi

    190 g

    +72 g versus Bolt A51

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. Bolt A51

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    36.5 cm²
  2. 2. XDA IIi

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    37.9 cm²

XDA IIi has approximately 4% more rectangular screen area than Bolt A51.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Bolt A51: Original memory entry

512 MB · 256 MB RAM

XDA IIi: Original memory entry

128 MB RAM · 96 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. Bolt A51

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot)

2. XDA IIi

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details MMC/SDIO

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. Bolt A51

    1500 mAh

    +300 mAh versus XDA IIi

  2. 2. XDA IIi

    1200 mAh

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. Bolt A512. XDA IIi

Everyday essentials
Everyday essentials — specifications for Bolt A51, XDA IIi.
SpecificationBolt A51XDA IIi
Dimensions (HxWxD)
  • 118.5 Х 62.5 Х 12.8 mm
  • 130 Х 70 Х 19 mm
Weight
  • 118 g
  • 190 g
Technology
  • TFT
  • TFT
Screen size
  • 3.5" inch
  • 3.5" inch
Screen resolution
  • 320 x 480 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB
  • 256 MB RAM
  • 128 MB RAM
  • 96 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • MMC/SDIO
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Removable Li-Ion
  • 1200 mAh
  • Removable Li-Po
Operating system OS
  • Android 2.3.7 (Gingerbread)
  • Microsoft Windows Mobile 2003 SE PocketPC
Headphone jack
  • Yes
  • No
Display
Display — specifications for Bolt A51, XDA IIi.
SpecificationBolt A51XDA IIi
Touchscreen
  • touchscreen
  • resistive touchscreen
Display colors Unknown
  • 65K
Screen area
  • 36.5 cm2
  • 37.9 cm2
Screen format
  • 3:2 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 49.3%
  • 41.7%
PPI /points per inch/
  • 165 PPI
  • 114 PPI
Camera and Video
Camera and Video — specifications for Bolt A51, XDA IIi.
SpecificationBolt A51XDA IIi
Rear camera, main
  • 2 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 2 MP
  • 1.3 MP
Functions
  • LED flash
Unknown
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 0 MP,
Specifications
  • VGA
Unknown
Performance
Performance — specifications for Bolt A51, XDA IIi.
SpecificationBolt A51XDA IIi
Processor CPU
  • 832 MHz
  • Intel Xscale PXA272 520 MHz
General specs
General specs — specifications for Bolt A51, XDA IIi.
SpecificationBolt A51XDA IIi
Release date
  • 2013
  • April
  • 2004
  • Q4
Colors
  • Black/Silver
Unknown
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
Unknown
Battery life
  • Stand by time- Up to 140 h Talking time- Up to 4 h 30 min
  • Stand by time- Up to 150 h Talking time- Up to 3 h 30 min
Communication and Connectivity
Communication and Connectivity — specifications for Bolt A51, XDA IIi.
SpecificationBolt A51XDA IIi
SIM card
  • Dual SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Unknown
Speed
  • HSPA
Unknown
GPRS
  • Class 12
  • Class 10
Edge
  • Class 32
  • No
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11b
GPS
  • No
  • No
USB
  • microUSB
  • Proprietary
Bluetooth
  • 3.0
  • Yes
Music and Audio
Music and Audio — specifications for Bolt A51, XDA IIi.
SpecificationBolt A51XDA IIi
Radio
  • FM radio
  • No
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for Bolt A51, XDA IIi.
SpecificationBolt A51XDA IIi
Dop
  • Sensors Accelerometer
  • Infrared port - Pocket Office -MP3/MP4 player -PDF
  • PPT viewer -Voice memo - Produced by HTC. Functionally identical to Qtek 2020i.