Amoi E78 vs Yezz Billy 4.7

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

  Billy 4.7: 30 g lighter

  E78:

  150 g

  Billy 4.7:

  120 g

• Width

  E78: 6.2 mm narrower

  E78:

  61 mm

  Billy 4.7:

  67.2 mm

• Screen diagonal

  E78: 2.24 in smaller diagonal

  E78:

  2.46 in

  Billy 4.7:

  4.7 in

• Depth

  Billy 4.7: 5.5 mm thinner

  E78:

  12.7 mm

  Billy 4.7:

  7.2 mm

• Height

  E78: 20.8 mm shorter

  E78:

  115 mm

  Billy 4.7:

  135.8 mm

• Release year

  E78:

  2007

  Billy 4.7:

  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. E78

   Height:

   115 mm

   Width:

   61 mm

   Depth:

   12.7 mm +5.5 mm versus Billy 4.7

2. 2. Billy 4.7

   Height:

   135.8 mm +20.8 mm versus E78

   Width:

   67.2 mm +6.2 mm versus E78

   Depth:

   7.2 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. E78

   Screen diagonal:

   2.46 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   18.7 cm²

2. 2. Billy 4.7

   Screen diagonal:

   4.7 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   60.9 cm²

Billy 4.7 has approximately 225% more rectangular screen area than E78.

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.