Lava Z40 vs Xiaomi Redmi Note 9S

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

  Z40: 89 g lighter

  Z40:

  120 g

  Redmi Note 9S:

  209 g

• Width

  Z40: 12.8 mm narrower

  Z40:

  63.9 mm

  Redmi Note 9S:

  76.7 mm

• Screen diagonal

  Z40: 2.67 in smaller diagonal

  Z40:

  4 in

  Redmi Note 9S:

  6.67 in

• Chipset

  Z40:

  Unisoc SC9832E

  Redmi Note 9S:

  Qualcomm SM7125 Snapdragon 720G (8 nm)

• Rear camera layout

  Z40:

  Single

  Redmi Note 9S:

  Quad

• Depth

  Redmi Note 9S: 2.9 mm thinner

  Z40:

  11.7 mm

  Redmi Note 9S:

  8.8 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. Z40

   Height:

   125.5 mm

   Width:

   63.9 mm

   Depth:

   11.7 mm +2.9 mm versus Redmi Note 9S

2. 2. Redmi Note 9S

   Height:

   165.8 mm +40.3 mm versus Z40

   Width:

   76.7 mm +12.8 mm versus Z40

   Depth:

   8.8 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. Z40

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

2. 2. Redmi Note 9S

   Screen diagonal:

   6.67 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   107.4 cm²

Redmi Note 9S has approximately 135.9% more rectangular screen area than Z40.

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.