Acer M900 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

  M900: 21 g lighter

  M900:

  188 g

  Redmi Note 9S:

  209 g

• Width

  M900: 14.7 mm narrower

  M900:

  62 mm

  Redmi Note 9S:

  76.7 mm

• Screen diagonal

  M900: 2.87 in smaller diagonal

  M900:

  3.8 in

  Redmi Note 9S:

  6.67 in

• Rear camera layout

  M900:

  Single

  Redmi Note 9S:

  Quad

• Depth

  Redmi Note 9S: 8.3 mm thinner

  M900:

  17.1 mm

  Redmi Note 9S:

  8.8 mm

• Height

  M900: 46.8 mm shorter

  M900:

  119 mm

  Redmi Note 9S:

  165.8 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. M900

   Height:

   119 mm

   Width:

   62 mm

   Depth:

   17.1 mm +8.3 mm versus Redmi Note 9S

2. 2. Redmi Note 9S

   Height:

   165.8 mm +46.8 mm versus M900

   Width:

   76.7 mm +14.7 mm versus M900

   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. M900

   Screen diagonal:

   3.8 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   41.1 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 161.3% more rectangular screen area than M900.

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.