O2 XDA vs Samsung Galaxy M21

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

  Galaxy M21: 13 g lighter

  XDA:

  201 g

  Galaxy M21:

  188 g

• Width

  XDA: 2.1 mm narrower

  XDA:

  73 mm

  Galaxy M21:

  75.1 mm

• Screen diagonal

  XDA: 2.9 in smaller diagonal

  XDA:

  3.5 in

  Galaxy M21:

  6.4 in

• Depth

  Galaxy M21: 9.1 mm thinner

  XDA:

  18 mm

  Galaxy M21:

  8.9 mm

• Height

  XDA: 30 mm shorter

  XDA:

  129 mm

  Galaxy M21:

  159 mm

• Release year

  XDA:

  2003

  Galaxy M21:

  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

   Height:

   129 mm

   Width:

   73 mm

   Depth:

   18 mm +9.1 mm versus Galaxy M21

2. 2. Galaxy M21

   Height:

   159 mm +30 mm versus XDA

   Width:

   75.1 mm +2.1 mm versus XDA

   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

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   37.9 cm²

2. 2. Galaxy M21

   Screen diagonal:

   6.4 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   100.5 cm²

Galaxy M21 has approximately 165% more rectangular screen area than XDA.

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.

At least two unambiguous positive capacity values are needed for a chart. Original entries remain in the 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.