Micromax Bolt A51 vs O2 XDA II

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 II:

  190 g

• Width

  Bolt A51: 7.5 mm narrower

  Bolt A51:

  62.5 mm

  XDA II:

  70 mm

• Depth

  Bolt A51: 6.2 mm thinner

  Bolt A51:

  12.8 mm

  XDA II:

  19 mm

• Height

  Bolt A51: 11.5 mm shorter

  Bolt A51:

  118.5 mm

  XDA II:

  130 mm

• Release year

  Bolt A51:

  2013

  XDA II:

  2003

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 II

   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

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 II

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   37.9 cm²

XDA II 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.

Practical features

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

Battery capacity

Capacity is not battery life. No endurance test is implied.

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.