Allview A4 Duo vs BLU Studio X9 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.

• Weight

  A4 Duo: 33.4 g lighter

  A4 Duo:

  110.6 g

  Studio X9 HD:

  144 g

• Width

  A4 Duo: 9.8 mm narrower

  A4 Duo:

  63.2 mm

  Studio X9 HD:

  73 mm

• Screen diagonal

  A4 Duo: 1.5 in smaller diagonal

  A4 Duo:

  3.5 in

  Studio X9 HD:

  5 in

• Depth

  Studio X9 HD: 1.9 mm thinner

  A4 Duo:

  12 mm

  Studio X9 HD:

  10.1 mm

• Height

  A4 Duo: 26.9 mm shorter

  A4 Duo:

  116.1 mm

  Studio X9 HD:

  143 mm

• Release year

  A4 Duo:

  2013

  Studio X9 HD:

  2020

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 +1.9 mm versus Studio X9 HD

2. 2. Studio X9 HD

   Height:

   143 mm +26.9 mm versus A4 Duo

   Width:

   73 mm +9.8 mm versus A4 Duo

   Depth:

   10.1 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. A4 Duo

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   36.5 cm²

2. 2. Studio X9 HD

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

Studio X9 HD has approximately 88.9% 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.