Allview A4 Duo vs BLU J4

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.

• WeightA4 Duo: 47.4 g lighterA4 Duo: 110.6 g · J4: 158 g
• WidthA4 Duo: 9.1 mm narrowerA4 Duo: 63.2 mm · J4: 72.3 mm
• Screen diagonalA4 Duo: 2 in smaller diagonalA4 Duo: 3.5 in · J4: 5.5 in
• DepthJ4: 2 mm thinnerJ4: 10 mm · A4 Duo: 12 mm
• HeightA4 Duo: 34.9 mm shorterA4 Duo: 116.1 mm · J4: 151 mm
• Release year2013 / 2019A4 Duo: 2013 · J4: 2019

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. A4 Duo

   Height

   116.1 mm

   Width

   63.2 mm

   Depth

   12 mm+2 mm versus J4

   Weight

   110.6 g

2. 2. J4

   Height

   151 mm+34.9 mm versus A4 Duo

   Width

   72.3 mm+9.1 mm versus A4 Duo

   Depth

   10 mm

   Weight

   158 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. A4 Duo 3.5 in · 3:2 About 36.5 cm² rectangular area
2. 2. J4 5.5 in · 18:9 About 78.1 cm² rectangular area

J4 has approximately 114% more rectangular screen area than A4 Duo.

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.