Archos 55b Cobalt 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: 43 g lighter

    55b Cobalt:
    188 g
    XDA Comet:
    145 g
  • Screen diagonal

    XDA Comet: 2.8 in smaller diagonal

    55b Cobalt:
    5.5 in
    XDA Comet:
    2.7 in
  • Release year

    55b Cobalt:
    2017
    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. 55b Cobalt

    Height:
    Unknown
    Width:
    Unknown
    Depth:
    Unknown

    Unavailable dimensions are omitted from the drawing.

  2. 2. XDA Comet

    Height:
    106 mm
    Width:
    58 mm
    Depth:
    19 mm

Weight

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

  1. 1. 55b Cobalt

    188 g

    +43 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. 55b Cobalt

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

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

55b Cobalt has approximately 269.4% 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.

55b Cobalt: Original memory entry

16/32 GB · 1/2 GB RAM

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. 55b Cobalt

NFC:
See details Super AMOLED
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 GB (dedicated slot)

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. 55b Cobalt2. XDA Comet

Everyday essentials
Everyday essentials — specifications for 55b Cobalt, XDA Comet.
Specification55b CobaltXDA Comet
Dimensions (HxWxD)
  • 155 Х 79 Х 0 mm
  • 106 Х 58 Х 19 mm
Weight
  • 188 g
  • 145 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.5" inch
  • 2.7" inch
Screen resolution
  • 720 x 1280 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16/32 GB
  • 1/2 GB RAM
  • 64 MB RAM
  • 1 GB ROM
Memory card support
  • microSD
  • up to 64 GB (dedicated slot)
  • miniSD
Battery Capacity is not battery life. No endurance test is implied.
  • 2600 mAh
  • Removable Li-Ion
  • 0 mAh,
Operating system OS
  • Android 6.0 (Marshmallow)
  • Microsoft Windows Mobile 6.0 Professional
Chipset
  • Qualcomm MSM8909 Snapdragon 210 (28 nm)
Unknown
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for 55b Cobalt, XDA Comet.
Specification55b CobaltXDA Comet
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
  • 65K
Screen area
  • 83.4 cm2
  • 22.6 cm2
Screen format
  • 16:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 68.1%
  • 36.7%
PPI /points per inch/
  • 267 PPI
  • 148 PPI
Camera and Video
Camera and Video — specifications for 55b Cobalt, XDA Comet.
Specification55b CobaltXDA Comet
Rear camera, main
  • 13 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 13 MP
  • AF
  • 2 MP
Functions
  • Dual-LED flash
  • HDR
  • panorama
  • LED flash
Video
  • 720p@30fps
  • Yes
Front camera, selfie
  • 2 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 2 MP
  • VGA videocall camera
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for 55b Cobalt, XDA Comet.
Specification55b CobaltXDA Comet
Processor CPU
  • Quad-core 1.1 GHz Cortex-A7
  • Intel XScale PXA 270 620 MHz
Graphics processor GPU
  • Adreno 304
Unknown
Antutu 7 score *
  • 17741
Unknown
General specs
General specs — specifications for 55b Cobalt, XDA Comet.
Specification55b CobaltXDA Comet
Release date
  • 2017
  • January
  • 2007
  • September
Colors
  • Gray
  • Silver
Battery life Unknown
  • Stand by time- Up to 200 h Talking time- Up to 6 h
Communication and Connectivity
Communication and Connectivity — specifications for 55b Cobalt, XDA Comet.
Specification55b CobaltXDA Comet
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE 800 / 1800 / 2100 / 2600
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
Speed
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11b/g
GPS
  • Yes
  • with A-GPS
  • No
USB
  • microUSB 2.0
  • miniUSB
Bluetooth
  • 4.0
  • A2DP
  • 1.2
Harmful irradiation
  • SAR EU - 0.98 W/kg (head) 1.76 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for 55b Cobalt, XDA Comet.
Specification55b CobaltXDA Comet
Radio
  • FM radio
  • Stereo FM radio
  • RDS
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for 55b Cobalt, XDA Comet.
Specification55b CobaltXDA Comet
Dop
  • Sensors Fingerprint (rear-mounted)
  • Sensors Accelerometer
  • proximity
  • Infrared port - Pocket Office -Voice memo -MP3/AAC player