BLU J4 vs Xolo Opus HD

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.

• Width

  Opus HD: 1.3 mm narrower

  J4:

  72.3 mm

  Opus HD:

  71 mm

• Screen diagonal

  Opus HD: 0.51 in smaller diagonal

  J4:

  5.5 in

  Opus HD:

  4.99 in

• Depth

  Opus HD: 2.1 mm thinner

  J4:

  10 mm

  Opus HD:

  7.9 mm

• Height

  Opus HD: 8 mm shorter

  J4:

  151 mm

  Opus HD:

  143 mm

• Release year

  J4:

  2019

  Opus HD:

  2014

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. J4

   Height:

   151 mm +8 mm versus Opus HD

   Width:

   72.3 mm +1.3 mm versus Opus HD

   Depth:

   10 mm +2.1 mm versus Opus HD

   Weight:

   158 g

2. 2. Opus HD

   Height:

   143 mm

   Width:

   71 mm

   Depth:

   7.9 mm

   Weight:

   Unknown

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. J4

   Screen diagonal:

   5.5 in

   Aspect ratio (height:width):

   18:9

   Approximate rectangular screen area:

   78.1 cm²

2. 2. Opus HD

   Screen diagonal:

   4.99 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.6 cm²

J4 has approximately 13.7% more rectangular screen area than Opus HD.

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.