Allview X4 Xtreme vs Celkon A40

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

  A40: 100.4 g lighter

  X4 Xtreme:

  226.9 g

  A40:

  126.5 g

• Width

  A40: 19.3 mm narrower

  X4 Xtreme:

  83.3 mm

  A40:

  64 mm

• Screen diagonal

  A40: 2 in smaller diagonal

  X4 Xtreme:

  6 in

  A40:

  4 in

• Depth

  X4 Xtreme: 1.7 mm thinner

  X4 Xtreme:

  9.1 mm

  A40:

  10.8 mm

• Height

  A40: 40.2 mm shorter

  X4 Xtreme:

  166.4 mm

  A40:

  126.2 mm

• Release year

  X4 Xtreme:

  2017

  A40:

  2014

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 +40.2 mm versus A40

   Width:

   83.3 mm +19.3 mm versus A40

   Depth:

   9.1 mm

2. 2. A40

   Height:

   126.2 mm

   Width:

   64 mm

   Depth:

   10.8 mm +1.7 mm versus X4 Xtreme

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. A40

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

X4 Xtreme has approximately 117.9% more rectangular screen area than A40.

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.