alcatel Pop S7 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

  Pop S7:

  LCD

  X21:

  OLED

• Weight

  X21: 5.8 g lighter

  Pop S7:

  162 g

  X21:

  156.2 g

• Width

  Pop S7: 2.8 mm narrower

  Pop S7:

  72 mm

  X21:

  74.8 mm

• Screen diagonal

  Pop S7: 1.28 in smaller diagonal

  Pop S7:

  5 in

  X21:

  6.28 in

• Rear camera layout

  Pop S7:

  Single

  X21:

  Dual

• Depth

  X21: 2 mm thinner

  Pop S7:

  9.4 mm

  X21:

  7.4 mm

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. Pop S7

   Height:

   141 mm

   Width:

   72 mm

   Depth:

   9.4 mm +2 mm versus X21

2. 2. X21

   Height:

   154.5 mm +13.5 mm versus Pop S7

   Width:

   74.8 mm +2.8 mm versus Pop S7

   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.

1. 1. Pop S7

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

2. 2. X21

   Screen diagonal:

   6.28 in

   Aspect ratio (height:width):

   19:9

   Approximate rectangular screen area:

   98.4 cm²

X21 has approximately 42.8% more rectangular screen area than Pop S7.

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.