Oppo Ace2 vs Xiaomi Mi 4

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

  Ace2:

  OLED

  Mi 4:

  LCD

• Weight

  Mi 4: 37 g lighter

  Ace2:

  186 g

  Mi 4:

  149 g

• Width

  Mi 4: 6.9 mm narrower

  Ace2:

  75.4 mm

  Mi 4:

  68.5 mm

• Screen diagonal

  Mi 4: 1.55 in smaller diagonal

  Ace2:

  6.55 in

  Mi 4:

  5 in

• Chipset

  Ace2:

  Qualcomm SM8250 Snapdragon 865 (7 nm+)

  Mi 4:

  Qualcomm MSM8974AC Snapdragon 801 (28 nm)

• Rear camera layout

  Ace2:

  Quad

  Mi 4:

  Single

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. Ace2

   Height:

   160 mm +20.8 mm versus Mi 4

   Width:

   75.4 mm +6.9 mm versus Mi 4

   Depth:

   8.6 mm

2. 2. Mi 4

   Height:

   139.2 mm

   Width:

   68.5 mm

   Depth:

   8.9 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. Ace2

   Screen diagonal:

   6.55 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   103.6 cm²

2. 2. Mi 4

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

Ace2 has approximately 50.3% more rectangular screen area than Mi 4.

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.