Oppo Reno4 Pro vs Samsung Galaxy M31

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

  Reno4 Pro: 30 g lighter

  Reno4 Pro:

  161 g

  Galaxy M31:

  191 g

• Width

  Reno4 Pro: 1.9 mm narrower

  Reno4 Pro:

  73.2 mm

  Galaxy M31:

  75.1 mm

• Memory variants

  At 128 GB storage

  Reno4 Pro:

  8 GB RAM

  Galaxy M31:

  6 GB RAM

• Rear camera layout

  Reno4 Pro:

  Quad

  Galaxy M31:

  Triple

• Depth

  Reno4 Pro: 1.2 mm thinner

  Reno4 Pro:

  7.7 mm

  Galaxy M31:

  8.9 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. Reno4 Pro

   Height:

   160.2 mm

   Width:

   73.2 mm

   Depth:

   7.7 mm

2. 2. Galaxy M31

   Height:

   159.2 mm

   Width:

   75.1 mm +1.9 mm versus Reno4 Pro

   Depth:

   8.9 mm +1.2 mm versus Reno4 Pro

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. Reno4 Pro

   Screen diagonal:

   6.5 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   102 cm²

2. 2. Galaxy M31

   Screen diagonal:

   6.4 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   100.5 cm²

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.