Allview P9 Energy vs vivo X21i

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.

• Weight

  X21i: 24 g lighter

  P9 Energy:

  183 g

  X21i:

  159 g

• Screen diagonal

  P9 Energy: 0.78 in smaller diagonal

  P9 Energy:

  5.5 in

  X21i:

  6.28 in

• Chipset

  P9 Energy:

  Mediatek MT6755 Helio P10 (28 nm)

  X21i:

  Mediatek MT6771 Helio P60 (12 nm)

• Rear camera layout

  P9 Energy:

  Single

  X21i:

  Dual

• Depth

  X21i: 1.2 mm thinner

  P9 Energy:

  8.2 mm

  X21i:

  7 mm

• Height

  P9 Energy: 2.1 mm shorter

  P9 Energy:

  152.3 mm

  X21i:

  154.4 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. P9 Energy

   Height:

   152.3 mm

   Width:

   75.3 mm

   Depth:

   8.2 mm +1.2 mm versus X21i

2. 2. X21i

   Height:

   154.4 mm +2.1 mm versus P9 Energy

   Width:

   75 mm

   Depth:

   7 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. P9 Energy

   Screen diagonal:

   5.5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   83.4 cm²

2. 2. X21i

   Screen diagonal:

   6.28 in

   Aspect ratio (height:width):

   19:9

   Approximate rectangular screen area:

   98.4 cm²

X21i has approximately 18% more rectangular screen area than P9 Energy.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

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.