Oppo R819 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.

• Display technology

  OLED versus LCD

  R819:

  LCD

  Galaxy M31:

  OLED

• Weight

  R819: 81 g lighter

  R819:

  110 g

  Galaxy M31:

  191 g

• Width

  R819: 7.1 mm narrower

  R819:

  68 mm

  Galaxy M31:

  75.1 mm

• Screen diagonal

  R819: 1.7 in smaller diagonal

  R819:

  4.7 in

  Galaxy M31:

  6.4 in

• Chipset

  R819:

  Mediatek MT6589 (28 nm)

  Galaxy M31:

  Exynos 9611 (10nm)

• Rear camera layout

  R819:

  Single

  Galaxy M31:

  Triple

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. R819

   Height:

   136.5 mm

   Width:

   68 mm

   Depth:

   7.3 mm

2. 2. Galaxy M31

   Height:

   159.2 mm +22.7 mm versus R819

   Width:

   75.1 mm +7.1 mm versus R819

   Depth:

   8.9 mm +1.6 mm versus R819

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. R819

   Screen diagonal:

   4.7 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   60.9 cm²

2. 2. Galaxy M31

   Screen diagonal:

   6.4 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   100.5 cm²

Galaxy M31 has approximately 65.1% more rectangular screen area than R819.

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.