Nokia N81 8GB vs vivo X9

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

  N81 8GB: 14 g lighter

  N81 8GB:

  140 g

  X9:

  154 g

• Width

  N81 8GB: 24 mm narrower

  N81 8GB:

  50 mm

  X9:

  74 mm

• Screen diagonal

  N81 8GB: 3.1 in smaller diagonal

  N81 8GB:

  2.4 in

  X9:

  5.5 in

• Depth

  X9: 10.9 mm thinner

  N81 8GB:

  17.9 mm

  X9:

  7 mm

• Height

  N81 8GB: 50.6 mm shorter

  N81 8GB:

  102 mm

  X9:

  152.6 mm

• Release year

  N81 8GB:

  2007

  X9:

  2016

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. N81 8GB

   Height:

   102 mm

   Width:

   50 mm

   Depth:

   17.9 mm +10.9 mm versus X9

2. 2. X9

   Height:

   152.6 mm +50.6 mm versus N81 8GB

   Width:

   74 mm +24 mm versus N81 8GB

   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. N81 8GB

   Screen diagonal:

   2.4 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   17.8 cm²

2. 2. X9

   Screen diagonal:

   5.5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   83.4 cm²

X9 has approximately 367.5% more rectangular screen area than N81 8GB.

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.