Celkon Millennia OCTA510 vs Eten M550

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

  Millennia OCTA510: 29 g lighter

  Millennia OCTA510:

  136 g

  M550:

  165 g

• Width

  M550: 10 mm narrower

  Millennia OCTA510:

  71 mm

  M550:

  61 mm

• Screen diagonal

  M550: 2.2 in smaller diagonal

  Millennia OCTA510:

  5 in

  M550:

  2.8 in

• Depth

  Millennia OCTA510: 12.9 mm thinner

  Millennia OCTA510:

  9.1 mm

  M550:

  22 mm

• Height

  M550: 31.5 mm shorter

  Millennia OCTA510:

  143.5 mm

  M550:

  112 mm

• Release year

  Millennia OCTA510:

  2015

  M550:

  2006

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 OCTA510

   Height:

   143.5 mm +31.5 mm versus M550

   Width:

   71 mm +10 mm versus M550

   Depth:

   9.1 mm

2. 2. M550

   Height:

   112 mm

   Width:

   61 mm

   Depth:

   22 mm +12.9 mm versus Millennia OCTA510

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 OCTA510

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

2. 2. M550

   Screen diagonal:

   2.8 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   24.3 cm²

Millennia OCTA510 has approximately 183.9% more rectangular screen area than M550.

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.