Motorola ROKR E2 vs Samsung Galaxy J4

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 E2: 68 g lighter

    ROKR E2:
    107 g
    Galaxy J4:
    175 g
  • Width

    ROKR E2: 27.7 mm narrower

    ROKR E2:
    49.5 mm
    Galaxy J4:
    77.2 mm
  • Screen diagonal

    ROKR E2: 3.5 in smaller diagonal

    ROKR E2:
    2 in
    Galaxy J4:
    5.5 in
  • Depth

    Galaxy J4: 9.9 mm thinner

    ROKR E2:
    18 mm
    Galaxy J4:
    8.1 mm
  • Height

    ROKR E2: 45.7 mm shorter

    ROKR E2:
    106 mm
    Galaxy J4:
    151.7 mm
  • Release year

    ROKR E2:
    2006
    Galaxy J4:
    2018

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. ROKR E2

    Height:
    106 mm
    Width:
    49.5 mm
    Depth:
    18 mm +9.9 mm versus Galaxy J4
  2. 2. Galaxy J4

    Height:
    151.7 mm +45.7 mm versus ROKR E2
    Width:
    77.2 mm +27.7 mm versus ROKR E2
    Depth:
    8.1 mm

Weight

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

  1. 1. ROKR E2

    107 g

  2. 2. Galaxy J4

    175 g

    +68 g versus ROKR E2

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. ROKR E2

    Screen diagonal:
    2 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    12.4 cm²
  2. 2. Galaxy J4

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²

Galaxy J4 has approximately 573.2% more rectangular screen area than ROKR E2.

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.

Recorded RAM for ROKR E2, Galaxy J4, compared at the same storage capacity.
StorageROKR E2Galaxy J4
16 GB Unknown 2 GB RAM
ROKR E2: Original memory entry

10 MB

Practical features

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

1. ROKR E2

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details SD · up to 2 GB

2. Galaxy J4

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (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. ROKR E2

    850 mAh

  2. 2. Galaxy J4

    3000 mAh

    +2150 mAh versus ROKR E2

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. ROKR E22. Galaxy J4

Everyday essentials
Everyday essentials — specifications for ROKR E2, Galaxy J4.
SpecificationROKR E2Galaxy J4
Dimensions (HxWxD)
  • 106 Х 49.5 Х 18 mm
  • 151.7 Х 77.2 Х 8.1 mm
Weight
  • 107 g
  • 175 g
Technology
  • TFT
  • Super AMOLED
Screen size
  • 2" inch
  • 5.5" inch
Screen resolution
  • 240 x 320 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 10 MB
  • 16 GB
  • 2 GB RAM
Memory card support
  • SD
  • up to 2 GB
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 850 mAh
  • Removable Li-Ion
  • 3000 mAh
  • Removable Li-Ion
Operating system OS
  • Linux
  • Android 8.0 (Oreo)
Chipset Unknown
  • Exynos 7570 Quad (14 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for ROKR E2, Galaxy J4.
SpecificationROKR E2Galaxy J4
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 12.4 cm2
  • 83.4 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 23.6%
  • 71.2%
PPI /points per inch/
  • 200 PPI
  • 267 PPI
Camera and Video
Camera and Video — specifications for ROKR E2, Galaxy J4.
SpecificationROKR E2Galaxy J4
Rear camera, main
  • 1.3 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 1.3 MP
  • 13 MP
  • f/1.9
  • 28mm (wide)
  • AF
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 5 MP
  • Single
Specifications Unknown
  • 5 MP
  • f/2.2
Performance
Performance — specifications for ROKR E2, Galaxy J4.
SpecificationROKR E2Galaxy J4
Processor CPU
  • 32-bit Intel XScale PXA270 312 MHz
  • Quad-core 1.4 GHz Cortex-A53
Graphics processor GPU Unknown
  • Mali-T720 MP2
General specs
General specs — specifications for ROKR E2, Galaxy J4.
SpecificationROKR E2Galaxy J4
Release date
  • 2006
  • January
  • 2018
  • May
Colors
  • Silver
  • Black
  • Black
  • Gold
  • Orchid Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 130 EUR
  • 140 EUR
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 4 h 30 min
  • Talking time- Up to 20 h (3G) Music play - Up to 80 h
Body build Unknown
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for ROKR E2, Galaxy J4.
SpecificationROKR E2Galaxy J4
SIM card
  • Mini-SIM
  • Dual SIM (Micro-SIM
  • dual stand-by)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 2100 - India
  • Pakistan -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 38(2600)
  • 40(2300) - India
  • Pakistan
Speed Unknown
  • HSPA
  • LTE Cat4 150/50 Mbps
GPRS
  • Class 10
  • Yes
Edge
  • Class 6
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • A2DP
  • 4.2
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR - 0.36 W/kg (head) 1.49 W/kg (body)
Music and Audio
Music and Audio — specifications for ROKR E2, Galaxy J4.
SpecificationROKR E2Galaxy J4
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for ROKR E2, Galaxy J4.
SpecificationROKR E2Galaxy J4
Dop
  • MP4/MP3 player -iTAP -Voice memo -Voice dial -Organizer -Changeable covers
  • Sensors Accelerometer
  • proximity - Versions: J400F/DS (Global DS); J400G/DS