verykool s400 vs vivo Y9s

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

  s400: 66.7 g lighter

  s400:

  120 g

  Y9s:

  186.7 g

• Width

  s400: 10.2 mm narrower

  s400:

  65 mm

  Y9s:

  75.2 mm

• Screen diagonal

  s400: 2.38 in smaller diagonal

  s400:

  4 in

  Y9s:

  6.38 in

• Chipset

  s400:

  Mediatek MT6589 (28 nm)

  Y9s:

  Qualcomm SDM665 Snapdragon 665 (11 nm)

• Rear camera layout

  s400:

  Single

  Y9s:

  Quad

• Depth

  Y9s: 3.3 mm thinner

  s400:

  12 mm

  Y9s:

  8.7 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. s400

   Height:

   119 mm

   Width:

   65 mm

   Depth:

   12 mm +3.3 mm versus Y9s

2. 2. Y9s

   Height:

   159.3 mm +40.3 mm versus s400

   Width:

   75.2 mm +10.2 mm versus s400

   Depth:

   8.7 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. s400

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

2. 2. Y9s

   Screen diagonal:

   6.38 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   99.9 cm²

Y9s has approximately 119.4% more rectangular screen area than s400.

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.