O2 Cosmo vs Xiaomi Redmi Note 9 Pro Max

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

  Cosmo: 79 g lighter

  Cosmo:

  130 g

  Redmi Note 9 Pro Max:

  209 g

• Width

  Cosmo: 14.7 mm narrower

  Cosmo:

  62 mm

  Redmi Note 9 Pro Max:

  76.7 mm

• Screen diagonal

  Cosmo: 4.27 in smaller diagonal

  Cosmo:

  2.4 in

  Redmi Note 9 Pro Max:

  6.67 in

• Chipset

  Cosmo:

  TI OMAP 850

  Redmi Note 9 Pro Max:

  Qualcomm SM7125 Snapdragon 720G (8 nm)

• Rear camera layout

  Cosmo:

  Single

  Redmi Note 9 Pro Max:

  Quad

• Depth

  Redmi Note 9 Pro Max: 4.2 mm thinner

  Cosmo:

  13 mm

  Redmi Note 9 Pro Max:

  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. Cosmo

   Height:

   111 mm

   Width:

   62 mm

   Depth:

   13 mm +4.2 mm versus Redmi Note 9 Pro Max

2. 2. Redmi Note 9 Pro Max

   Height:

   165.5 mm +54.5 mm versus Cosmo

   Width:

   76.7 mm +14.7 mm versus Cosmo

   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. Cosmo

   Screen diagonal:

   2.4 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   17.8 cm²

2. 2. Redmi Note 9 Pro Max

   Screen diagonal:

   6.67 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   107.4 cm²

Redmi Note 9 Pro Max has approximately 502.2% more rectangular screen area than Cosmo.

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.

At least two unambiguous positive capacity values are needed for a chart. Original entries remain in the specifications.

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.