LG C900 Optimus 7Q vs O2 XDA Comet

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

    XDA Comet: 33 g lighter

    C900 Optimus 7Q:
    178 g
    XDA Comet:
    145 g
  • Width

    XDA Comet: 1.5 mm narrower

    C900 Optimus 7Q:
    59.5 mm
    XDA Comet:
    58 mm
  • Screen diagonal

    XDA Comet: 0.8 in smaller diagonal

    C900 Optimus 7Q:
    3.5 in
    XDA Comet:
    2.7 in
  • Depth

    C900 Optimus 7Q: 3.8 mm thinner

    C900 Optimus 7Q:
    15.2 mm
    XDA Comet:
    19 mm
  • Height

    XDA Comet: 13.5 mm shorter

    C900 Optimus 7Q:
    119.5 mm
    XDA Comet:
    106 mm
  • Release year

    C900 Optimus 7Q:
    2010
    XDA Comet:
    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. C900 Optimus 7Q

    Height:
    119.5 mm +13.5 mm versus XDA Comet
    Width:
    59.5 mm +1.5 mm versus XDA Comet
    Depth:
    15.2 mm
  2. 2. XDA Comet

    Height:
    106 mm
    Width:
    58 mm
    Depth:
    19 mm +3.8 mm versus C900 Optimus 7Q

Weight

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

  1. 1. C900 Optimus 7Q

    178 g

    +33 g versus XDA Comet

  2. 2. XDA Comet

    145 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. C900 Optimus 7Q

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

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

C900 Optimus 7Q has approximately 54.4% more rectangular screen area than XDA Comet.

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.

C900 Optimus 7Q: Original memory entry

16 GB · 512 MB RAM · 512 MB ROM

XDA Comet: Original memory entry

64 MB RAM · 1 GB ROM

Practical features

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

1. C900 Optimus 7Q

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

2. XDA Comet

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details miniSD

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. C900 Optimus 7Q2. XDA Comet

Everyday essentials
Everyday essentials — specifications for C900 Optimus 7Q, XDA Comet.
SpecificationC900 Optimus 7QXDA Comet
Dimensions (HxWxD)
  • 119.5 Х 59.5 Х 15.2 mm
  • 106 Х 58 Х 19 mm
Weight
  • 178 g
  • 145 g
Technology
  • TFT
  • TFT
Screen size
  • 3.5" inch
  • 2.7" 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
  • 64 MB RAM
  • 1 GB ROM
Memory card support
  • No
  • miniSD
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
  • Microsoft Windows Mobile 6.0 Professional
Chipset
  • Qualcomm QSD8650 Snapdragon S1
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for C900 Optimus 7Q, XDA Comet.
SpecificationC900 Optimus 7QXDA Comet
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
  • 65K
Screen area
  • 34.9 cm2
  • 22.6 cm2
Screen format
  • 5:3 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 49.0%
  • 36.7%
PPI /points per inch/
  • 267 PPI
  • 148 PPI
Screen protection
  • Corning Gorilla Glass
Unknown
Camera and Video
Camera and Video — specifications for C900 Optimus 7Q, XDA Comet.
SpecificationC900 Optimus 7QXDA Comet
Rear camera, main
  • 5 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 5 MP
  • AF
  • 2 MP
Functions
  • LED flash
  • LED flash
Video
  • 720p
  • Yes
Front camera, selfie
  • 0 MP,
  • 0.3 MP
  • Single
Specifications Unknown
  • VGA videocall camera
Performance
Performance — specifications for C900 Optimus 7Q, XDA Comet.
SpecificationC900 Optimus 7QXDA Comet
Processor CPU
  • 1.0 GHz Scorpion
  • Intel XScale PXA 270 620 MHz
Graphics processor GPU
  • Adreno 200
Unknown
General specs
General specs — specifications for C900 Optimus 7Q, XDA Comet.
SpecificationC900 Optimus 7QXDA Comet
Release date
  • 2010
  • October
  • 2007
  • September
Colors
  • Black
  • Silver
Battery life
  • Stand by time- Up to 350 h Talking time- Up to 7 h
  • Stand by time- Up to 200 h Talking time- Up to 6 h
Communication and Connectivity
Communication and Connectivity — specifications for C900 Optimus 7Q, XDA Comet.
SpecificationC900 Optimus 7QXDA Comet
SIM card
  • Mini-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA
GPRS
  • Class 10
  • Class 10
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • DLNA
  • Wi-Fi 802.11b/g
GPS
  • Yes
  • with A-GPS
  • No
USB
  • microUSB 2.0
  • miniUSB
Bluetooth
  • 2.1
  • A2DP
  • 1.2
Harmful irradiation
  • SAR - 0.35 W/kg (head) 0.30 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for C900 Optimus 7Q, XDA Comet.
SpecificationC900 Optimus 7QXDA Comet
Radio
  • Stereo FM radio
  • Stereo FM radio
  • RDS
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for C900 Optimus 7Q, XDA Comet.
SpecificationC900 Optimus 7QXDA Comet
Dop
  • Sensors Accelerometer
  • proximity
  • compass - MP4/H.264/WMV player -MP3/WAV/WMA/eAAC+ player -Organizer -Document viewer/editor -Voice memo -Predictive text input - Also known as LG Optimus Quantum
  • Infrared port - Pocket Office -Voice memo -MP3/AAC player