Oppo A57 vs Xiaomi Black Shark Helo

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

  A57:

  LCD

  Black Shark Helo:

  OLED

• Weight

  A57: 43 g lighter

  A57:

  147 g

  Black Shark Helo:

  190 g

• Width

  A57: 2.3 mm narrower

  A57:

  72.9 mm

  Black Shark Helo:

  75.2 mm

• Screen diagonal

  A57: 0.81 in smaller diagonal

  A57:

  5.2 in

  Black Shark Helo:

  6.01 in

• Chipset

  A57:

  Qualcomm MSM8940 Snapdragon 435 (28 nm)

  Black Shark Helo:

  Qualcomm SDM845 Snapdragon 845 (10 nm)

• Rear camera layout

  A57:

  Single

  Black Shark Helo:

  Dual

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. A57

   Height:

   149.1 mm

   Width:

   72.9 mm

   Depth:

   7.7 mm

2. 2. Black Shark Helo

   Height:

   160 mm +10.9 mm versus A57

   Width:

   75.2 mm +2.3 mm versus A57

   Depth:

   8.7 mm +1 mm versus A57

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. A57

   Screen diagonal:

   5.2 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   74.5 cm²

2. 2. Black Shark Helo

   Screen diagonal:

   6.01 in

   Aspect ratio (height:width):

   18:9

   Approximate rectangular screen area:

   93.2 cm²

Black Shark Helo has approximately 25% more rectangular screen area than A57.

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.