Coolpad Mega vs vivo X21

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

  Mega:

  LCD

  X21:

  OLED

• Weight

  Mega: 13.2 g lighter

  Mega:

  143 g

  X21:

  156.2 g

• Width

  X21: 2 mm narrower

  Mega:

  76.8 mm

  X21:

  74.8 mm

• Screen diagonal

  Mega: 0.78 in smaller diagonal

  Mega:

  5.5 in

  X21:

  6.28 in

• Chipset

  Mega:

  Mediatek MT6735P (28 nm)

  X21:

  Qualcomm SDM660 Snapdragon 660 (14 nm)

• Rear camera layout

  Mega:

  Single

  X21:

  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. Mega

   Height:

   153 mm

   Width:

   76.8 mm +2 mm versus X21

   Depth:

   7.9 mm +0.5 mm versus X21

2. 2. X21

   Height:

   154.5 mm

   Width:

   74.8 mm

   Depth:

   7.4 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.

At least two phones need compatible screen dimensions for a drawing.

1. 1. Mega

   Mega: Screen geometry unavailable or conflicting.

2. 2. X21

   Screen diagonal:

   6.28 in

   Aspect ratio (height:width):

   19:9

   Approximate rectangular screen area:

   98.4 cm²

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.