Asus Zenfone 2 ZE551ML vs O2 XDA Serra

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

  XDA Serra: 5 g lighter

  Zenfone 2 ZE551ML:

  170 g

  XDA Serra:

  165 g

• Width

  XDA Serra: 26.2 mm narrower

  Zenfone 2 ZE551ML:

  77.2 mm

  XDA Serra:

  51 mm

• Screen diagonal

  XDA Serra: 2.7 in smaller diagonal

  Zenfone 2 ZE551ML:

  5.5 in

  XDA Serra:

  2.8 in

• Chipset

  Zenfone 2 ZE551ML:

  Intel Atom Z3580 (4 GB RAM model) -Intel Atom Z3560 (2 GB RAM model)

  XDA Serra:

  Qualcomm MSM7201A

• Depth

  Zenfone 2 ZE551ML: 7.2 mm thinner

  Zenfone 2 ZE551ML:

  10.9 mm

  XDA Serra:

  18.1 mm

• Height

  XDA Serra: 50.5 mm shorter

  Zenfone 2 ZE551ML:

  152.5 mm

  XDA Serra:

  102 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. Zenfone 2 ZE551ML

   Height:

   152.5 mm +50.5 mm versus XDA Serra

   Width:

   77.2 mm +26.2 mm versus XDA Serra

   Depth:

   10.9 mm

2. 2. XDA Serra

   Height:

   102 mm

   Width:

   51 mm

   Depth:

   18.1 mm +7.2 mm versus Zenfone 2 ZE551ML

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. Zenfone 2 ZE551ML

   Screen diagonal:

   5.5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   83.4 cm²

2. 2. XDA Serra

   Screen diagonal:

   2.8 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   24.3 cm²

Zenfone 2 ZE551ML has approximately 243.5% more rectangular screen area than XDA Serra.

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.