NIU Tek 4D2 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

  Tek 4D2: 57 g lighter

  Tek 4D2:

  152 g

  Redmi Note 9S:

  209 g

• Width

  Tek 4D2: 13.7 mm narrower

  Tek 4D2:

  63 mm

  Redmi Note 9S:

  76.7 mm

• Screen diagonal

  Tek 4D2: 2.67 in smaller diagonal

  Tek 4D2:

  4 in

  Redmi Note 9S:

  6.67 in

• Chipset

  Tek 4D2:

  Mediatek MT6572M (28 nm)

  Redmi Note 9S:

  Qualcomm SM7125 Snapdragon 720G (8 nm)

• Rear camera layout

  Tek 4D2:

  Single

  Redmi Note 9S:

  Quad

• Depth

  Redmi Note 9S: 1.5 mm thinner

  Tek 4D2:

  10.3 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. Tek 4D2

   Height:

   123 mm

   Width:

   63 mm

   Depth:

   10.3 mm +1.5 mm versus Redmi Note 9S

2. 2. Redmi Note 9S

   Height:

   165.8 mm +42.8 mm versus Tek 4D2

   Width:

   76.7 mm +13.7 mm versus Tek 4D2

   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. Tek 4D2

   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 Tek 4D2.

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.