BLU J4 vs Lava X28

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.

• WidthJ4: 5.7 mm narrowerJ4: 72.3 mm · X28: 78 mm
• DepthX28: 1 mm thinnerX28: 9 mm · J4: 10 mm
• HeightJ4: 4 mm shorterJ4: 151 mm · X28: 155 mm
• Release year2019 / 2016J4: 2019 · X28: 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. J4

   Height

   151 mm

   Width

   72.3 mm

   Depth

   10 mm+1 mm versus X28

   Weight

   158 g

2. 2. X28

   Height

   155 mm+4 mm versus J4

   Width

   78 mm+5.7 mm versus J4

   Depth

   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 5.5 in · 18:9 About 78.1 cm² rectangular area
2. 2. X28 5.5 in · 16:9 About 83.4 cm² rectangular area

X28 has approximately 6.8% more rectangular screen area than J4.

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.