LG Quantum vs Motorola A728

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    A728: 56 g lighter

    Quantum:
    176 g
    A728:
    120 g
  • Width

    A728: 6.5 mm narrower

    Quantum:
    59.5 mm
    A728:
    53 mm
  • Depth

    Quantum: 5.8 mm thinner

    Quantum:
    15.2 mm
    A728:
    21 mm
  • Height

    A728: 18.5 mm shorter

    Quantum:
    119.5 mm
    A728:
    101 mm
  • Release year

    Quantum:
    2010
    A728:
    2005

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. Quantum

    Height:
    119.5 mm +18.5 mm versus A728
    Width:
    59.5 mm +6.5 mm versus A728
    Depth:
    15.2 mm
  2. 2. A728

    Height:
    101 mm
    Width:
    53 mm
    Depth:
    21 mm +5.8 mm versus Quantum

Weight

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

  1. 1. Quantum

    176 g

    +56 g versus A728

  2. 2. A728

    120 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. Quantum

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    34.9 cm²
  2. 2. A728

    A728: Screen geometry unavailable or conflicting.

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.

Quantum: Original memory entry

16 GB · 512 MB RAM · 512 MB ROM

A728: Original memory entry

8 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. Quantum

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
No

2. A728

NFC:
Unknown
Headphone jack:
No
Memory card support:
No

Battery capacity

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

At least two unambiguous positive capacity values are needed for a chart. Original entries remain in the specifications.

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. Quantum2. A728

Everyday essentials
Everyday essentials — specifications for Quantum, A728.
SpecificationQuantumA728
Dimensions (HxWxD)
  • 119.5 Х 59.5 Х 15.2 mm
  • 101 Х 53 Х 21 mm
Weight
  • 176 g
  • 120 g
Technology
  • TFT
  • TFT
Screen size
  • 3.5" inch
  • 0" inch
Screen resolution
  • 480 x 800 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 512 MB RAM
  • 512 MB ROM
  • 8 MB
Memory card support
  • No
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Removable Li-Ion
  • 0 mAh,
Operating system OS
  • Microsoft Windows Phone 7
  • Linux
Chipset
  • Qualcomm QSD8650 Snapdragon S1
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for Quantum, A728.
SpecificationQuantumA728
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
  • 65K
Screen area
  • 34.9 cm2
Unknown
Screen format
  • 5:3 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 49.0%
Unknown
PPI /points per inch/
  • 267 PPI
  • 0 PPI
Camera and Video
Camera and Video — specifications for Quantum, A728.
SpecificationQuantumA728
Rear camera, main
  • 5 MP
  • Single
  • 0.3 MP
  • Single
Camera specs
  • 5 MP
  • AF
Unknown
Functions
  • LED flash
Unknown
Video
  • 720p
  • Yes
Front camera, selfie
  • 0 MP,
  • 0 MP,
Performance
Performance — specifications for Quantum, A728.
SpecificationQuantumA728
Processor CPU
  • 1.0 GHz Scorpion
Unknown
Graphics processor GPU
  • Adreno 200
Unknown
General specs
General specs — specifications for Quantum, A728.
SpecificationQuantumA728
Release date
  • 2010
  • October
  • 2005
  • July
Colors
  • Black
  • Mr. black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 80 EUR
Unknown
Battery life
  • Stand by time- Up to 350 h Talking time- Up to 6 h
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Quantum, A728.
SpecificationQuantumA728
SIM card
  • Mini-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Unknown
Speed
  • HSPA
Unknown
GPRS
  • Class 10
  • Class 8
Edge
  • Class 10
  • No
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • DLNA
  • No
GPS
  • Yes
  • with A-GPS
  • No
USB
  • microUSB 2.0
  • Proprietary
Bluetooth
  • 2.1
  • A2DP
  • Yes
Harmful irradiation
  • SAR - 0.35 W/kg (head) 0.30 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Quantum, A728.
SpecificationQuantumA728
Radio
  • Stereo FM radio
  • No
Others Unknown
  • Handwriting and speech recognition (Chi & Eng)
Other features
Other features — specifications for Quantum, A728.
SpecificationQuantumA728
Dop
  • Sensors Accelerometer
  • proximity
  • compass - MP4/H.264/WMV player -MP3/WAV/WMA/eAAC+ player -Organizer -Document viewer/editor -Voice memo/dial/command -Predictive text input - For AT&T
  • Infrared port - MP3 player -Organizer -Voice dial/memo