Allview X4 Xtreme vs vivo iQOO

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.

• Display technology

  OLED versus LCD

  X4 Xtreme:

  LCD

  iQOO:

  OLED

• Weight

  iQOO: 46.9 g lighter

  X4 Xtreme:

  226.9 g

  iQOO:

  180 g

• Width

  iQOO: 8.1 mm narrower

  X4 Xtreme:

  83.3 mm

  iQOO:

  75.2 mm

• Screen diagonal

  X4 Xtreme: 0.41 in smaller diagonal

  X4 Xtreme:

  6 in

  iQOO:

  6.41 in

• Chipset

  X4 Xtreme:

  Mediatek MT6757T Helio P25 (16 nm)

  iQOO:

  Qualcomm SDM855 Snapdragon 855 (7 nm)

• Depth

  iQOO: 0.6 mm thinner

  X4 Xtreme:

  9.1 mm

  iQOO:

  8.5 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. X4 Xtreme

   Height:

   166.4 mm +8.7 mm versus iQOO

   Width:

   83.3 mm +8.1 mm versus iQOO

   Depth:

   9.1 mm +0.6 mm versus iQOO

2. 2. iQOO

   Height:

   157.7 mm

   Width:

   75.2 mm

   Depth:

   8.5 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. X4 Xtreme

   Screen diagonal:

   6 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   99.2 cm²

2. 2. iQOO

   Screen diagonal:

   6.41 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   100.9 cm²

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.