vivo X21i vs ZTE Obsidian

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

  Obsidian: 21.5 g lighter

  X21i:

  159 g

  Obsidian:

  137.5 g

• Width

  Obsidian: 6.4 mm narrower

  X21i:

  75 mm

  Obsidian:

  68.6 mm

• Screen diagonal

  Obsidian: 1.78 in smaller diagonal

  X21i:

  6.28 in

  Obsidian:

  4.5 in

• Chipset

  X21i:

  Mediatek MT6771 Helio P60 (12 nm)

  Obsidian:

  Mediatek MT6735M (28 nm)

• Rear camera layout

  X21i:

  Dual

  Obsidian:

  Single

• Depth

  X21i: 3.2 mm thinner

  X21i:

  7 mm

  Obsidian:

  10.2 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. X21i

   Height:

   154.4 mm +17 mm versus Obsidian

   Width:

   75 mm +6.4 mm versus Obsidian

   Depth:

   7 mm

2. 2. Obsidian

   Height:

   137.4 mm

   Width:

   68.6 mm

   Depth:

   10.2 mm +3.2 mm versus X21i

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. X21i

   Screen diagonal:

   6.28 in

   Aspect ratio (height:width):

   19:9

   Approximate rectangular screen area:

   98.4 cm²

2. 2. Obsidian

   Screen diagonal:

   4.5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   55.8 cm²

X21i has approximately 76.3% more rectangular screen area than Obsidian.

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.