BLU J2 vs Lava Z40

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

  Z40: 26 g lighter

  J2:

  146 g

  Z40:

  120 g

• Width

  Z40: 9.2 mm narrower

  J2:

  73.1 mm

  Z40:

  63.9 mm

• Screen diagonal

  Z40: 1 in smaller diagonal

  J2:

  5 in

  Z40:

  4 in

• Depth

  J2: 1.4 mm thinner

  J2:

  10.3 mm

  Z40:

  11.7 mm

• Height

  Z40: 18.5 mm shorter

  J2:

  144 mm

  Z40:

  125.5 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. J2

   Height:

   144 mm +18.5 mm versus Z40

   Width:

   73.1 mm +9.2 mm versus Z40

   Depth:

   10.3 mm

   Weight:

   146 g

2. 2. Z40

   Height:

   125.5 mm

   Width:

   63.9 mm

   Depth:

   11.7 mm +1.4 mm versus J2

   Weight:

   120 g

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. J2

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

2. 2. Z40

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

J2 has approximately 51.3% more rectangular screen area than Z40.

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.