O2 XDA Exec vs vivo X21

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

  X21: 128.8 g lighter

  XDA Exec:

  285 g

  X21:

  156.2 g

• Width

  X21: 6.2 mm narrower

  XDA Exec:

  81 mm

  X21:

  74.8 mm

• Screen diagonal

  XDA Exec: 2.68 in smaller diagonal

  XDA Exec:

  3.6 in

  X21:

  6.28 in

• Rear camera layout

  XDA Exec:

  Single

  X21:

  Dual

• Depth

  X21: 17.6 mm thinner

  XDA Exec:

  25 mm

  X21:

  7.4 mm

• Height

  XDA Exec: 27.5 mm shorter

  XDA Exec:

  127 mm

  X21:

  154.5 mm

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 Exec

   Height:

   127 mm

   Width:

   81 mm +6.2 mm versus X21

   Depth:

   25 mm +17.6 mm versus X21

2. 2. X21

   Height:

   154.5 mm +27.5 mm versus XDA Exec

   Width:

   74.8 mm

   Depth:

   7.4 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 Exec

   Screen diagonal:

   3.6 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   40.1 cm²

2. 2. X21

   Screen diagonal:

   6.28 in

   Aspect ratio (height:width):

   19:9

   Approximate rectangular screen area:

   98.4 cm²

X21 has approximately 145.3% more rectangular screen area than XDA Exec.

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.