Celkon A9 Dual vs verykool s401

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

  s401: 16 g lighter

  A9 Dual:

  116 g

  s401:

  100 g

• Width

  A9 Dual: 1.1 mm narrower

  A9 Dual:

  63.9 mm

  s401:

  65 mm

• Screen diagonal

  A9 Dual: 0.5 in smaller diagonal

  A9 Dual:

  3.5 in

  s401:

  4 in

• Height

  A9 Dual: 5.5 mm shorter

  A9 Dual:

  120.5 mm

  s401:

  126 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. A9 Dual

   Height:

   120.5 mm

   Width:

   63.9 mm

   Depth:

   10.6 mm

2. 2. s401

   Height:

   126 mm +5.5 mm versus A9 Dual

   Width:

   65 mm +1.1 mm versus A9 Dual

   Depth:

   10.4 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. A9 Dual

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   36.5 cm²

2. 2. s401

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

s401 has approximately 24.8% more rectangular screen area than A9 Dual.

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.