Motorola RIZR Z8 vs O2 XDA Comet

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

  RIZR Z8: 33 g lighter

  RIZR Z8:

  112 g

  XDA Comet:

  145 g

• Width

  RIZR Z8: 8 mm narrower

  RIZR Z8:

  50 mm

  XDA Comet:

  58 mm

• Screen diagonal

  RIZR Z8: 0.5 in smaller diagonal

  RIZR Z8:

  2.2 in

  XDA Comet:

  2.7 in

• Depth

  RIZR Z8: 4 mm thinner

  RIZR Z8:

  15 mm

  XDA Comet:

  19 mm

• Height

  XDA Comet: 3 mm shorter

  RIZR Z8:

  109 mm

  XDA Comet:

  106 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. RIZR Z8

   Height:

   109 mm +3 mm versus XDA Comet

   Width:

   50 mm

   Depth:

   15 mm

2. 2. XDA Comet

   Height:

   106 mm

   Width:

   58 mm +8 mm versus RIZR Z8

   Depth:

   19 mm +4 mm versus RIZR Z8

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. RIZR Z8

   Screen diagonal:

   2.2 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   15 cm²

2. 2. XDA Comet

   Screen diagonal:

   2.7 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   22.6 cm²

XDA Comet has approximately 50.6% more rectangular screen area than RIZR Z8.

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.