vivo Y9s vs Xiaomi Redmi 4

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

  Y9s:

  OLED

  Redmi 4:

  LCD

• Weight

  Redmi 4: 36.7 g lighter

  Y9s:

  186.7 g

  Redmi 4:

  150 g

• Width

  Redmi 4: 5.2 mm narrower

  Y9s:

  75.2 mm

  Redmi 4:

  70 mm

• Screen diagonal

  Redmi 4: 1.38 in smaller diagonal

  Y9s:

  6.38 in

  Redmi 4:

  5 in

• Chipset

  Y9s:

  Qualcomm SDM665 Snapdragon 665 (11 nm)

  Redmi 4:

  Qualcomm MSM8940 Snapdragon 435 (28 nm)

• Rear camera layout

  Y9s:

  Quad

  Redmi 4:

  Single

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. Y9s

   Height:

   159.3 mm +20.1 mm versus Redmi 4

   Width:

   75.2 mm +5.2 mm versus Redmi 4

   Depth:

   8.7 mm

2. 2. Redmi 4

   Height:

   139.2 mm

   Width:

   70 mm

   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. Y9s

   Screen diagonal:

   6.38 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   99.9 cm²

2. 2. Redmi 4

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

Y9s has approximately 45% more rectangular screen area than Redmi 4.

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.