Sonim XP8 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.

• Weight

  Billy 4: 226 g lighter

  XP8:

  335 g

  Billy 4:

  109 g

• Width

  Billy 4: 15.1 mm narrower

  XP8:

  79.5 mm

  Billy 4:

  64.4 mm

• Screen diagonal

  Billy 4: 1 in smaller diagonal

  XP8:

  5 in

  Billy 4:

  4 in

• Chipset

  XP8:

  Qualcomm SDM630 Snapdragon 630 (14 nm)

  Billy 4:

  Qualcomm MSM8212 Snapdragon 200 (28 nm)

• Depth

  Billy 4: 8.1 mm thinner

  XP8:

  18 mm

  Billy 4:

  9.9 mm

• Height

  Billy 4: 29.5 mm shorter

  XP8:

  152 mm

  Billy 4:

  122.5 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. XP8

   Height:

   152 mm +29.5 mm versus Billy 4

   Width:

   79.5 mm +15.1 mm versus Billy 4

   Depth:

   18 mm +8.1 mm versus Billy 4

2. 2. Billy 4

   Height:

   122.5 mm

   Width:

   64.4 mm

   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. XP8

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

2. 2. Billy 4

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

XP8 has approximately 51.3% more rectangular screen area than Billy 4.

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.