i-mate JAM Black vs Oppo R819

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

  R819: 50 g lighter

  JAM Black:

  160 g

  R819:

  110 g

• Width

  JAM Black: 10 mm narrower

  JAM Black:

  58 mm

  R819:

  68 mm

• Screen diagonal

  JAM Black: 1.9 in smaller diagonal

  JAM Black:

  2.8 in

  R819:

  4.7 in

• Depth

  R819: 10.7 mm thinner

  JAM Black:

  18 mm

  R819:

  7.3 mm

• Height

  JAM Black: 28.5 mm shorter

  JAM Black:

  108 mm

  R819:

  136.5 mm

• Release year

  JAM Black:

  2005

  R819:

  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. JAM Black

   Height:

   108 mm

   Width:

   58 mm

   Depth:

   18 mm +10.7 mm versus R819

2. 2. R819

   Height:

   136.5 mm +28.5 mm versus JAM Black

   Width:

   68 mm +10 mm versus JAM Black

   Depth:

   7.3 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. R819

   Screen diagonal:

   4.7 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   60.9 cm²

R819 has approximately 150.8% more rectangular screen area than JAM Black.

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.