Motorola A728 vs Oppo A31

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

  A728: 60 g lighter

  A728:

  120 g

  A31:

  180 g

• Width

  A728: 22.5 mm narrower

  A728:

  53 mm

  A31:

  75.5 mm

• Rear camera layout

  A728:

  Single

  A31:

  Triple

• Depth

  A31: 12.7 mm thinner

  A728:

  21 mm

  A31:

  8.3 mm

• Height

  A728: 62.9 mm shorter

  A728:

  101 mm

  A31:

  163.9 mm

• Release year

  A728:

  2005

  A31:

  2020

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. A728

   Height:

   101 mm

   Width:

   53 mm

   Depth:

   21 mm +12.7 mm versus A31

2. 2. A31

   Height:

   163.9 mm +62.9 mm versus A728

   Width:

   75.5 mm +22.5 mm versus A728

   Depth:

   8.3 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.

At least two phones need compatible screen dimensions for a drawing.

1. 1. A728

   A728: Screen geometry unavailable or conflicting.

2. 2. A31

   Screen diagonal:

   6.5 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   102 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.

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.