Celkon Millennia Hero vs ZTE Open

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.

• Width

  Open: 2 mm narrower

  Millennia Hero:

  64 mm

  Open:

  62 mm

• Screen diagonal

  Open: 0.5 in smaller diagonal

  Millennia Hero:

  4 in

  Open:

  3.5 in

• Depth

  Millennia Hero: 1.5 mm thinner

  Millennia Hero:

  11 mm

  Open:

  12.5 mm

• Height

  Open: 11 mm shorter

  Millennia Hero:

  125 mm

  Open:

  114 mm

• Release year

  Millennia Hero:

  2015

  Open:

  2013

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 Hero

   Height:

   125 mm +11 mm versus Open

   Width:

   64 mm +2 mm versus Open

   Depth:

   11 mm

   Weight:

   113 g

2. 2. Open

   Height:

   114 mm

   Width:

   62 mm

   Depth:

   12.5 mm +1.5 mm versus Millennia Hero

   Weight:

   Unknown

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 Hero

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 cm²

2. 2. Open

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   36.5 cm²

Millennia Hero has approximately 24.8% more rectangular screen area than Open.

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.