Samsung Galaxy J8 vs Samsung i640

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

  i640: 29 g lighter

  Galaxy J8:

  177 g

  i640:

  148 g

• Width

  i640: 14.7 mm narrower

  Galaxy J8:

  75.7 mm

  i640:

  61 mm

• Screen diagonal

  i640: 3.6 in smaller diagonal

  Galaxy J8:

  6 in

  i640:

  2.4 in

• Rear camera layout

  Galaxy J8:

  Dual

  i640:

  Single

• Depth

  Galaxy J8: 8.7 mm thinner

  Galaxy J8:

  8.2 mm

  i640:

  16.9 mm

• Height

  i640: 64.8 mm shorter

  Galaxy J8:

  159.2 mm

  i640:

  94.4 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. Galaxy J8

   Height:

   159.2 mm +64.8 mm versus i640

   Width:

   75.7 mm +14.7 mm versus i640

   Depth:

   8.2 mm

2. 2. i640

   Height:

   94.4 mm

   Width:

   61 mm

   Depth:

   16.9 mm +8.7 mm versus Galaxy J8

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. Galaxy J8

   Screen diagonal:

   6 in

   Aspect ratio (height:width):

   18.5:9

   Approximate rectangular screen area:

   91.4 cm²

2. 2. i640

   Screen diagonal:

   2.4 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   17.8 cm²

Galaxy J8 has approximately 412.2% more rectangular screen area than i640.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

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.