Allview V4 Viper Pro 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.

• Width

  XDA II: 12 mm narrower

  V4 Viper Pro:

  82 mm

  XDA II:

  70 mm

• Screen diagonal

  XDA II: 3.3 in smaller diagonal

  V4 Viper Pro:

  6.8 in

  XDA II:

  3.5 in

• Depth

  V4 Viper Pro: 10.2 mm thinner

  V4 Viper Pro:

  8.8 mm

  XDA II:

  19 mm

• Height

  XDA II: 41 mm shorter

  V4 Viper Pro:

  171 mm

  XDA II:

  130 mm

• Release year

  V4 Viper Pro:

  2020

  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. V4 Viper Pro

   Height:

   171 mm +41 mm versus XDA II

   Width:

   82 mm +12 mm versus XDA II

   Depth:

   8.8 mm

2. 2. XDA II

   Height:

   130 mm

   Width:

   70 mm

   Depth:

   19 mm +10.2 mm versus V4 Viper Pro

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. V4 Viper Pro

   Screen diagonal:

   6.8 in

   Aspect ratio (height:width):

   19:9

   Approximate rectangular screen area:

   115.4 cm²

2. 2. XDA II

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   37.9 cm²

V4 Viper Pro has approximately 204.2% 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.