Celkon Millennia Epic Q550 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: 34.8 g lighter

  Millennia Epic Q550:

  143.8 g

  Billy 4:

  109 g

• Width

  Billy 4: 11.6 mm narrower

  Millennia Epic Q550:

  76 mm

  Billy 4:

  64.4 mm

• Screen diagonal

  Billy 4: 1.5 in smaller diagonal

  Millennia Epic Q550:

  5.5 in

  Billy 4:

  4 in

• Chipset

  Millennia Epic Q550:

  Mediatek MT6582 (28 nm)

  Billy 4:

  Qualcomm MSM8212 Snapdragon 200 (28 nm)

• Depth

  Millennia Epic Q550: 2 mm thinner

  Millennia Epic Q550:

  7.9 mm

  Billy 4:

  9.9 mm

• Height

  Billy 4: 29.5 mm shorter

  Millennia Epic Q550:

  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. Millennia Epic Q550

   Height:

   152 mm +29.5 mm versus Billy 4

   Width:

   76 mm +11.6 mm versus Billy 4

   Depth:

   7.9 mm

2. 2. Billy 4

   Height:

   122.5 mm

   Width:

   64.4 mm

   Depth:

   9.9 mm +2 mm versus Millennia Epic Q550

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. Millennia Epic Q550

   Screen diagonal:

   5.5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   83.4 cm²

2. 2. Billy 4

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

Millennia Epic Q550 has approximately 83.1% 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.

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.