Samsung Galaxy A21 vs Xiaomi Redmi Note 3 (MediaTek)

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

  Galaxy A21:

  OLED

  Redmi Note 3 (MediaTek):

  LCD

• Screen diagonal

  Redmi Note 3 (MediaTek): 1 in smaller diagonal

  Galaxy A21:

  6.5 in

  Redmi Note 3 (MediaTek):

  5.5 in

• Rear camera layout

  Galaxy A21:

  Quad

  Redmi Note 3 (MediaTek):

  Single

• Release year

  Galaxy A21:

  2020

  Redmi Note 3 (MediaTek):

  2015

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. Galaxy A21

   Height:

   Unknown

   Width:

   Unknown

   Depth:

   Unknown

   Weight:

   Unknown

   Unavailable dimensions are omitted from the drawing.

2. 2. Redmi Note 3 (MediaTek)

   Height:

   150 mm

   Width:

   76 mm

   Depth:

   8.7 mm

   Weight:

   164 g

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. Galaxy A21

   Screen diagonal:

   6.5 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   102 cm²

2. 2. Redmi Note 3 (MediaTek)

   Screen diagonal:

   5.5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   83.4 cm²

Galaxy A21 has approximately 22.3% more rectangular screen area than Redmi Note 3 (MediaTek).

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.