Motorola ROKR E2 vs Samsung Galaxy A21

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.

  • Screen diagonal

    ROKR E2: 4.5 in smaller diagonal

    ROKR E2:
    2 in
    Galaxy A21:
    6.5 in
  • Rear camera layout

    ROKR E2:
    Single
    Galaxy A21:
    Quad
  • Release year

    ROKR E2:
    2006
    Galaxy A21:
    2020

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
    Weight:
    107 g
  2. 2. Galaxy A21

    Height:
    Unknown
    Width:
    Unknown
    Depth:
    Unknown
    Weight:
    Unknown

    Unavailable dimensions are omitted from the drawing.

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 A21

    Screen diagonal:
    6.5 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    102 cm²

Galaxy A21 has approximately 723.5% 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 A21, compared at the same storage capacity.
StorageROKR E2Galaxy A21
32 GB Unknown 3 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 A21

NFC:
See details Yes (market/region dependent)
Headphone jack:
Yes
Memory card support:
See details microSDXC (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 A21

    4000 mAh

    +3150 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 A21

Everyday essentials
Everyday essentials — specifications for ROKR E2, Galaxy A21.
SpecificationROKR E2Galaxy A21
Dimensions (HxWxD)
  • 106 Х 49.5 Х 18 mm
  • Х Х mm
Weight
  • 107 g
  • 0 g
Technology
  • TFT
  • Super AMOLED
Screen size
  • 2" inch
  • 6.5" inch
Screen resolution
  • 240 x 320 px
  • 720 x 1600 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 10 MB
  • 32GB 3GB RAM
Memory card support
  • SD
  • up to 2 GB
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 850 mAh
  • Removable Li-Ion
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Linux
  • Android 10.0; One UI 2.0
NFC Unknown
  • Yes (market/region dependent)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for ROKR E2, Galaxy A21.
SpecificationROKR E2Galaxy A21
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 12.4 cm2
  • 102.0 cm2
Screen format
  • 4:3 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 23.6%
Unknown
PPI /points per inch/
  • 200 PPI
  • 270 PPI
Camera and Video
Camera and Video — specifications for ROKR E2, Galaxy A21.
SpecificationROKR E2Galaxy A21
Rear camera, main
  • 1.3 MP
  • Single
  • 16 MP
  • Quad
Camera specs
  • 1.3 MP
  • 16 MP
  • (wide)
  • AF -8 MP
  • (ultrawide) -2 MP
  • (macro) -2 MP
  • (depth)
Functions
  • LED flash
  • LED flash
  • panorama
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 13 MP
  • Single
Specifications Unknown
  • 13 MP
  • (wide)
Performance
Performance — specifications for ROKR E2, Galaxy A21.
SpecificationROKR E2Galaxy A21
Processor CPU
  • 32-bit Intel XScale PXA270 312 MHz
Unknown
General specs
General specs — specifications for ROKR E2, Galaxy A21.
SpecificationROKR E2Galaxy A21
Release date
  • 2006
  • January
  • 2020
  • April 8
Colors
  • Silver
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 130 EUR
  • 250 EUR
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 4 h 30 min
Unknown
Body build Unknown
  • Glass front
  • plastic back
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for ROKR E2, Galaxy A21.
SpecificationROKR E2Galaxy A21
SIM card
  • Mini-SIM
  • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
  • dual stand-by)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only) -3G - HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE
Speed Unknown
  • HSPA 42.2/5.76 Mbps
  • 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
  • Yes
Bluetooth
  • 2.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for ROKR E2, Galaxy A21.
SpecificationROKR E2Galaxy A21
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for ROKR E2, Galaxy A21.
SpecificationROKR E2Galaxy A21
Dop
  • MP4/MP3 player -iTAP -Voice memo -Voice dial -Organizer -Changeable covers
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - Fast charging 15W - Preliminary specifications