BLU C4 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.

• Display technology

  OLED versus LCD

  C4:

  LCD

  X9:

  OLED

• Weight

  C4: 36 g lighter

  C4:

  118 g

  X9:

  154 g

• Width

  C4: 9.8 mm narrower

  C4:

  64.2 mm

  X9:

  74 mm

• Screen diagonal

  C4: 1.5 in smaller diagonal

  C4:

  4 in

  X9:

  5.5 in

• Depth

  X9: 3.9 mm thinner

  C4:

  10.9 mm

  X9:

  7 mm

• Height

  C4: 28.3 mm shorter

  C4:

  124.3 mm

  X9:

  152.6 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. C4

   Height:

   124.3 mm

   Width:

   64.2 mm

   Depth:

   10.9 mm +3.9 mm versus X9

2. 2. X9

   Height:

   152.6 mm +28.3 mm versus C4

   Width:

   74 mm +9.8 mm versus C4

   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. C4

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 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 83.1% more rectangular screen area than C4.

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.