QMobile A1 vs vivo Y28

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

  A1: 18 g lighter

  A1:

  138 g

  Y28:

  156 g

• Width

  A1: 1.6 mm narrower

  A1:

  67 mm

  Y28:

  68.6 mm

• Screen diagonal

  A1: 0.2 in smaller diagonal

  A1:

  4.5 in

  Y28:

  4.7 in

• Depth

  A1: 0.6 mm thinner

  A1:

  9.2 mm

  Y28:

  9.8 mm

• Height

  A1: 5.4 mm shorter

  A1:

  132 mm

  Y28:

  137.4 mm

• Release year

  A1:

  2015

  Y28:

  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. A1

   Height:

   132 mm

   Width:

   67 mm

   Depth:

   9.2 mm

2. 2. Y28

   Height:

   137.4 mm +5.4 mm versus A1

   Width:

   68.6 mm +1.6 mm versus A1

   Depth:

   9.8 mm +0.6 mm versus A1

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.

At least two phones need compatible screen dimensions for a drawing.

1. 1. A1

   A1: Screen geometry unavailable or conflicting.

2. 2. Y28

   Screen diagonal:

   4.7 in

   Aspect ratio (height:width):

   16:10

   Approximate rectangular screen area:

   64.1 cm²

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.