i-mate JAM vs Motorola ROKR E8

Compare recorded specifications, size and practical differences.

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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

    ROKR E8: 50 g lighter

    JAM:
    150 g
    ROKR E8:
    100 g
  • Width

    ROKR E8: 5 mm narrower

    JAM:
    58 mm
    ROKR E8:
    53 mm
  • Screen diagonal

    ROKR E8: 0.8 in smaller diagonal

    JAM:
    2.8 in
    ROKR E8:
    2 in
  • Depth

    ROKR E8: 7.4 mm thinner

    JAM:
    18 mm
    ROKR E8:
    10.6 mm
  • Height

    JAM: 7 mm shorter

    JAM:
    108 mm
    ROKR E8:
    115 mm
  • Release year

    JAM:
    2004
    ROKR E8:
    2007

Physical size

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

    Height:
    108 mm
    Width:
    58 mm +5 mm versus ROKR E8
    Depth:
    18 mm +7.4 mm versus ROKR E8
  2. 2. ROKR E8

    Height:
    115 mm +7 mm versus JAM
    Width:
    53 mm
    Depth:
    10.6 mm

Weight

Bars start at zero and share a scale within this chart.

  1. 1. JAM

    150 g

    +50 g versus ROKR E8

  2. 2. ROKR E8

    100 g

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

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. ROKR E8

    Screen diagonal:
    2 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    12.4 cm²

JAM has approximately 96% more rectangular screen area than ROKR E8.

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.

JAM: Original memory entry

64 MB RAM

ROKR E8: Original memory entry

2 GB

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. JAM

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details SDIO/MMC · up to 2 GB

2. ROKR E8

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD (dedicated slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

  1. 1. JAM

    1200 mAh

    +230 mAh versus ROKR E8

  2. 2. ROKR E8

    970 mAh

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.

1. JAM2. ROKR E8

Everyday essentials
Everyday essentials — specifications for JAM, ROKR E8.
SpecificationJAMROKR E8
Dimensions (HxWxD)
  • 108 Х 58 Х 18 mm
  • 115 Х 53 Х 10.6 mm
Weight
  • 150 g
  • 100 g
Technology
  • TFT
  • TFT
Screen size
  • 2.8" inch
  • 2" inch
Screen resolution
  • 240 x 320 px
  • 320 x 240 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 MB RAM
  • 2 GB
Memory card support
  • SDIO/MMC
  • up to 2 GB
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 970 mAh
  • Removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 2003 SE PocketPC
  • Linux / Java-based MOTOMAGX
Headphone jack
  • No
  • Yes
Display
Display — specifications for JAM, ROKR E8.
SpecificationJAMROKR E8
Touchscreen
  • resistive touchscreen
Unknown
Display colors
  • 65K
  • 256K
Screen area
  • 24.3 cm2
  • 12.4 cm2
Screen format
  • 4:3 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 38.8%
  • 20.3%
PPI /points per inch/
  • 143 PPI
  • 200 PPI
Camera and Video
Camera and Video — specifications for JAM, ROKR E8.
SpecificationJAMROKR E8
Rear camera, main
  • 1.3 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 1.3 MP
  • 2 MP
Video
  • Yes
  • Yes
Front camera, selfie
  • 0 MP,
  • 0 MP,
Performance
Performance — specifications for JAM, ROKR E8.
SpecificationJAMROKR E8
Processor CPU
  • Intel PXA272 416 MHz
Unknown
General specs
General specs — specifications for JAM, ROKR E8.
SpecificationJAMROKR E8
Release date
  • 2004
  • Q4
  • 2007
  • September
Colors
  • Stylish black and silver
  • Dark Navy
  • Platinum
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 260 EUR
  • 70 EUR
Battery life
  • Stand by time- Up to 180 h Talking time- Up to 3 h 30 min
  • Stand by time- Up to 300 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity — specifications for JAM, ROKR E8.
SpecificationJAMROKR E8
SIM card
  • Mini-SIM
  • Mini-SIM
GPRS
  • Class 10
  • Class 12
Edge
  • No
  • Class 12
Wi-Fi
  • No
  • No
GPS
  • No
  • No
USB
  • Proprietary
  • 2.0
Bluetooth
  • Yes
  • 2.0
  • A2DP
Harmful irradiation Unknown
  • SAR - 1.02 W/kg (head) 0.85 W/kg (body) SAR EU - 0.89 W/kg (head)
Music and Audio
Music and Audio — specifications for JAM, ROKR E8.
SpecificationJAMROKR E8
Radio
  • No
  • Stereo FM radio
Others
  • Handwriting recognition
  • ModeShift morphing keypad -Navigation scroll wheel
Other features
Other features — specifications for JAM, ROKR E8.
SpecificationJAMROKR E8
Dop
  • Infrared port - Pocket Office -Voice memo -MP3/AAC player -Predictive text input - Produced by HTC. Functionally identical to Qtek S100
  • O2 XDA II mini and T-Mobile MDA Compact.
  • MP3/AAC player -Organizer