Amoi E72 vs Motorola A3100

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

    A3100: 31 g lighter

    E72:
    150 g
    A3100:
    119 g
  • Width

    E72: 14.9 mm narrower

    E72:
    44.8 mm
    A3100:
    59.7 mm
  • Screen diagonal

    A3100: 0.4 in smaller diagonal

    E72:
    3.2 in
    A3100:
    2.8 in
  • Depth

    A3100: 1.1 mm thinner

    E72:
    14.8 mm
    A3100:
    13.7 mm
  • Height

    E72: 10 mm shorter

    E72:
    100 mm
    A3100:
    110 mm
  • Release year

    E72:
    2007
    A3100:
    2009

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. E72

    Height:
    100 mm
    Width:
    44.8 mm
    Depth:
    14.8 mm +1.1 mm versus A3100
  2. 2. A3100

    Height:
    110 mm +10 mm versus E72
    Width:
    59.7 mm +14.9 mm versus E72
    Depth:
    13.7 mm

Weight

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

  1. 1. E72

    150 g

    +31 g versus A3100

  2. 2. A3100

    119 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.

At least two phones need compatible screen dimensions for a drawing.

  1. 1. E72

    E72: Screen geometry unavailable or conflicting.

  2. 2. A3100

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

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.

E72: Original memory entry

64 MB

A3100: Original memory entry

256 MB · 128 MB RAM

Practical features

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

1. E72

NFC:
See details Super AMOLED
Headphone jack:
See details panorama
Memory card support:
See details microSD (dedicated slot)

2. A3100

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 16 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. E72

    1100 mAh

  2. 2. A3100

    1170 mAh

    +70 mAh versus E72

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. E722. A3100

Everyday essentials
Everyday essentials — specifications for E72, A3100.
SpecificationE72A3100
Dimensions (HxWxD)
  • 100 Х 44.8 Х 14.8 mm
  • 110 Х 59.7 Х 13.7 mm
Weight
  • 150 g
  • 119 g
Technology
  • TFT
  • TFT
Screen size
  • 3.2" inch
  • 2.8" inch
Screen resolution
  • 176 x 220 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 MB
  • 256 MB
  • 128 MB RAM
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 16 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1100 mAh
  • Removable Li-Ion
  • 1170 mAh
  • Removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 5.0 Phone Edition
  • Microsoft Windows Mobile 6.1 Professional
Chipset Unknown
  • Qualcomm MSM7201A
NFC
  • Super AMOLED
Unknown
Headphone jack
  • panorama
  • Yes
Display
Display — specifications for E72, A3100.
SpecificationE72A3100
Touchscreen
  • Super AMOLED
  • resistive touchscreen
Display colors
  • 65K
  • 65K
Screen area
  • 12.6 cm2
  • 24.3 cm2
Screen format
  • 16:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 28.1%
  • 37.0%
PPI /points per inch/
  • 0 PPI
  • 143 PPI
Camera and Video
Camera and Video — specifications for E72, A3100.
SpecificationE72A3100
Rear camera, main
  • 1.3 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 1.3 MP
  • 3.15 MP
  • AF
Functions Unknown
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 0 MP,
  • 0.3 MP
  • Single
Specifications
  • Super AMOLED
  • VGA videocall camera
Performance
Performance — specifications for E72, A3100.
SpecificationE72A3100
Processor CPU
  • Super AMOLED
  • 528 MHz ARM 11
Graphics processor GPU Unknown
  • Adreno 130
General specs
General specs — specifications for E72, A3100.
SpecificationE72A3100
Release date
  • 2007
  • 2009
  • January
Colors
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 150 EUR
Battery life Unknown
  • Stand by time- Up to 298 h Talking time- Up to 6 h 48 min
Communication and Connectivity
Communication and Connectivity — specifications for E72, A3100.
SpecificationE72A3100
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA 42.2/5.76 Mbps
  • HSPA 7.2/0.384 Mbps
GPRS
  • Yes
  • Class 12
Edge
  • Super AMOLED
  • Class 12
Wi-Fi
  • panorama
  • Wi-Fi 802.11 b/g
GPS
  • panorama
  • Yes
  • with A-GPS
USB
  • panorama
  • miniUSB
Bluetooth
  • Quad-core 1.25 GHz Cortex-A53
  • A2DP
  • 2.0
  • A2DP
Harmful irradiation Unknown
  • SAR - 1.31 W/kg (head) 1.33 W/kg (body) SAR EU - 0.93 W/kg (head)
Music and Audio
Music and Audio — specifications for E72, A3100.
SpecificationE72A3100
Radio
  • panorama
  • No
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for E72, A3100.
SpecificationE72A3100
Dop
  • File transfer -Organizer
  • Pocket Office -Voice memo -MP3/WMA/MP4/WMV player