Vodafone Smart first 7 vs Yezz Billy 4

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.

• Width

  Smart first 7: 1.6 mm narrower

  Smart first 7:

  62.8 mm

  Billy 4:

  64.4 mm

• Screen diagonal

  Smart first 7: 0.5 in smaller diagonal

  Smart first 7:

  3.5 in

  Billy 4:

  4 in

• Chipset

  Smart first 7:

  Spreadtrum SC7731G

  Billy 4:

  Qualcomm MSM8212 Snapdragon 200 (28 nm)

• Depth

  Billy 4: 2.1 mm thinner

  Smart first 7:

  12 mm

  Billy 4:

  9.9 mm

• Height

  Smart first 7: 8.1 mm shorter

  Smart first 7:

  114.4 mm

  Billy 4:

  122.5 mm

• Release year

  Smart first 7:

  2016

  Billy 4:

  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. Smart first 7

   Height:

   114.4 mm

   Width:

   62.8 mm

   Depth:

   12 mm +2.1 mm versus Billy 4

2. 2. Billy 4

   Height:

   122.5 mm +8.1 mm versus Smart first 7

   Width:

   64.4 mm +1.6 mm versus Smart first 7

   Depth:

   9.9 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. Smart first 7

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   36.5 cm²

2. 2. Billy 4

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

Billy 4 has approximately 24.8% 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.