Samsung Galaxy J7 Duo vs Vodafone Smart first 7

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

  Smart first 7: 64 g lighter

  Galaxy J7 Duo:

  174 g

  Smart first 7:

  110 g

• Width

  Smart first 7: 14.4 mm narrower

  Galaxy J7 Duo:

  77.2 mm

  Smart first 7:

  62.8 mm

• Screen diagonal

  Smart first 7: 2 in smaller diagonal

  Galaxy J7 Duo:

  5.5 in

  Smart first 7:

  3.5 in

• Chipset

  Galaxy J7 Duo:

  Exynos 7885 Octa (14 nm)

  Smart first 7:

  Spreadtrum SC7731G

• Rear camera layout

  Galaxy J7 Duo:

  Dual

  Smart first 7:

  Single

• Depth

  Galaxy J7 Duo: 3.8 mm thinner

  Galaxy J7 Duo:

  8.2 mm

  Smart first 7:

  12 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 J7 Duo

   Height:

   153.5 mm +39.1 mm versus Smart first 7

   Width:

   77.2 mm +14.4 mm versus Smart first 7

   Depth:

   8.2 mm

2. 2. Smart first 7

   Height:

   114.4 mm

   Width:

   62.8 mm

   Depth:

   12 mm +3.8 mm versus Galaxy J7 Duo

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 J7 Duo

   Screen diagonal:

   5.5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   83.4 cm²

2. 2. Smart first 7

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   36.5 cm²

Galaxy J7 Duo has approximately 128.6% more rectangular screen area than Smart first 7.

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.