Celkon A40 vs Panasonic T21

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

  T21: 6.5 g lighter

  A40:

  126.5 g

  T21:

  120 g

• Depth

  T21: 1.6 mm thinner

  A40:

  10.8 mm

  T21:

  9.2 mm

• Height

  T21: 13.6 mm shorter

  A40:

  126.2 mm

  T21:

  112.6 mm

• Release year

  A40:

  2014

  T21:

  2013

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. A40

   Height:

   126.2 mm +13.6 mm versus T21

   Width:

   64 mm

   Depth:

   10.8 mm +1.6 mm versus T21

2. 2. T21

   Height:

   112.6 mm

   Width:

   63.5 mm

   Depth:

   9.2 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. A40

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

2. 2. T21

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 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.