i-mate JAM Black vs O2 XDA Star

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 Star: 40 g lighter

  JAM Black:

  160 g

  XDA Star:

  120 g

• Width

  XDA Star: 3 mm narrower

  JAM Black:

  58 mm

  XDA Star:

  55 mm

• Screen diagonal

  XDA Star: 0.2 in smaller diagonal

  JAM Black:

  2.8 in

  XDA Star:

  2.6 in

• Depth

  XDA Star: 2.2 mm thinner

  JAM Black:

  18 mm

  XDA Star:

  15.8 mm

• Release year

  JAM Black:

  2005

  XDA Star:

  2007

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. JAM Black

   Height:

   108 mm

   Width:

   58 mm +3 mm versus XDA Star

   Depth:

   18 mm +2.2 mm versus XDA Star

2. 2. XDA Star

   Height:

   107 mm

   Width:

   55 mm

   Depth:

   15.8 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. JAM Black

   Screen diagonal:

   2.8 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   24.3 cm²

2. 2. XDA Star

   Screen diagonal:

   2.6 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   20.9 cm²

JAM Black has approximately 16% more rectangular screen area than XDA Star.

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.