LG Optimus 2X vs Samsung Galaxy A21

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

  Optimus 2X:

  LCD

  Galaxy A21:

  OLED

• Screen diagonal

  Optimus 2X: 2.5 in smaller diagonal

  Optimus 2X:

  4 in

  Galaxy A21:

  6.5 in

• Rear camera layout

  Optimus 2X:

  Single

  Galaxy A21:

  Quad

• Release year

  Optimus 2X:

  2010

  Galaxy A21:

  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. Optimus 2X

   Height:

   123.9 mm

   Width:

   63.2 mm

   Depth:

   10.9 mm

   Weight:

   139 g

2. 2. Galaxy A21

   Height:

   Unknown

   Width:

   Unknown

   Depth:

   Unknown

   Weight:

   Unknown

   Unavailable dimensions are omitted from the drawing.

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. Optimus 2X

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

2. 2. Galaxy A21

   Screen diagonal:

   6.5 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   102 cm²

Galaxy A21 has approximately 124% more rectangular screen area than Optimus 2X.

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.