Energizer Energy E401 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.

• Chipset

  Energy E401:

  Mediatek MT6580M (28 nm)

  Billy 4:

  Qualcomm MSM8212 Snapdragon 200 (28 nm)

• Release year

  Energy E401:

  2019

  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. Energy E401

   Height:

   Unknown

   Width:

   Unknown

   Depth:

   Unknown

   Weight:

   Unknown

   Unavailable dimensions are omitted from the drawing.

2. 2. Billy 4

   Height:

   122.5 mm

   Width:

   64.4 mm

   Depth:

   9.9 mm

   Weight:

   109 g

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. Energy E401

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   44.1 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 3.2% more rectangular screen area than Energy E401.

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.