LG K40 vs Oppo A91

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

  K40:

  LCD

  A91:

  OLED

• Weight

  K40: 22 g lighter

  K40:

  150 g

  A91:

  172 g

• Width

  K40: 1.4 mm narrower

  K40:

  71.9 mm

  A91:

  73.3 mm

• Screen diagonal

  K40: 0.7 in smaller diagonal

  K40:

  5.7 in

  A91:

  6.4 in

• Chipset

  K40:

  Mediatek MT6762 Helio P22 (12 nm)

  A91:

  Mediatek MT6771V Helio P70 (12nm)

• Rear camera layout

  K40:

  Single

  A91:

  Quad

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. K40

   Height:

   153 mm

   Width:

   71.9 mm

   Depth:

   8.3 mm

2. 2. A91

   Height:

   160.2 mm +7.2 mm versus K40

   Width:

   73.3 mm +1.4 mm versus K40

   Depth:

   7.9 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. K40

   Screen diagonal:

   5.7 in

   Aspect ratio (height:width):

   18:9

   Approximate rectangular screen area:

   83.8 cm²

2. 2. A91

   Screen diagonal:

   6.4 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   98.9 cm²

A91 has approximately 17.9% more rectangular screen area than K40.

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.