O2 XDA Atom vs Siemens SX66

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 Atom: 70 g lighter

  XDA Atom:

  140 g

  SX66:

  210 g

• Width

  XDA Atom: 13 mm narrower

  XDA Atom:

  58 mm

  SX66:

  71 mm

• Screen diagonal

  XDA Atom: 0.8 in smaller diagonal

  XDA Atom:

  2.7 in

  SX66:

  3.5 in

• Depth

  SX66: 0.5 mm thinner

  XDA Atom:

  18.5 mm

  SX66:

  18 mm

• Height

  XDA Atom: 23 mm shorter

  XDA Atom:

  102 mm

  SX66:

  125 mm

• Release year

  XDA Atom:

  2005

  SX66:

  2004

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. XDA Atom

   Height:

   102 mm

   Width:

   58 mm

   Depth:

   18.5 mm +0.5 mm versus SX66

2. 2. SX66

   Height:

   125 mm +23 mm versus XDA Atom

   Width:

   71 mm +13 mm versus XDA Atom

   Depth:

   18 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.

1. 1. XDA Atom

   Screen diagonal:

   2.7 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   22.6 cm²

2. 2. SX66

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   37.9 cm²

SX66 has approximately 68% more rectangular screen area than XDA Atom.

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.

At least two unambiguous positive capacity values are needed for a chart. Original entries remain in the specifications.

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.