Thuraya SG-2520 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: 61 g lighter

  SG-2520:

  170 g

  Billy 4:

  109 g

• Width

  SG-2520: 11.4 mm narrower

  SG-2520:

  53 mm

  Billy 4:

  64.4 mm

• Screen diagonal

  SG-2520: 2.1 in smaller diagonal

  SG-2520:

  1.9 in

  Billy 4:

  4 in

• Depth

  Billy 4: 8.9 mm thinner

  SG-2520:

  18.8 mm

  Billy 4:

  9.9 mm

• Height

  Billy 4: 16 mm shorter

  SG-2520:

  138.5 mm

  Billy 4:

  122.5 mm

• Release year

  SG-2520:

  2007

  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. SG-2520

   Height:

   138.5 mm +16 mm versus Billy 4

   Width:

   53 mm

   Depth:

   18.8 mm +8.9 mm versus Billy 4

2. 2. Billy 4

   Height:

   122.5 mm

   Width:

   64.4 mm +11.4 mm versus SG-2520

   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.

At least two phones need compatible screen dimensions for a drawing.

1. 1. SG-2520

   SG-2520: Screen geometry unavailable or conflicting.

2. 2. Billy 4

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

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.