O2 XDA II vs Samsung Galaxy M31

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.

• Width

  XDA II: 5.1 mm narrower

  XDA II:

  70 mm

  Galaxy M31:

  75.1 mm

• Screen diagonal

  XDA II: 2.9 in smaller diagonal

  XDA II:

  3.5 in

  Galaxy M31:

  6.4 in

• Rear camera layout

  XDA II:

  Single

  Galaxy M31:

  Triple

• Depth

  Galaxy M31: 10.1 mm thinner

  XDA II:

  19 mm

  Galaxy M31:

  8.9 mm

• Height

  XDA II: 29.2 mm shorter

  XDA II:

  130 mm

  Galaxy M31:

  159.2 mm

• Release year

  XDA II:

  2003

  Galaxy M31:

  2020

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 II

   Height:

   130 mm

   Width:

   70 mm

   Depth:

   19 mm +10.1 mm versus Galaxy M31

2. 2. Galaxy M31

   Height:

   159.2 mm +29.2 mm versus XDA II

   Width:

   75.1 mm +5.1 mm versus XDA II

   Depth:

   8.9 mm

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 II

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   37.9 cm²

2. 2. Galaxy M31

   Screen diagonal:

   6.4 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   100.5 cm²

Galaxy M31 has approximately 165% more rectangular screen area than XDA II.

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.

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.