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O2 XDA Comet vs Oppo A12

Compare recorded specifications, size and practical differences.

Oppo A12

Oppo A12

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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.

  • WeightXDA Comet: 20 g lighterXDA Comet: 145 g · A12: 165 g
  • WidthXDA Comet: 17.5 mm narrowerXDA Comet: 58 mm · A12: 75.5 mm
  • Screen diagonalXDA Comet: 3.52 in smaller diagonalXDA Comet: 2.7 in · A12: 6.22 in
  • Rear camera layoutSingle / DualXDA Comet: Single · A12: Dual
  • DepthA12: 10.7 mm thinnerA12: 8.3 mm · XDA Comet: 19 mm
  • HeightXDA Comet: 49.9 mm shorterXDA Comet: 106 mm · A12: 155.9 mm

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.

Front
XDA Comet: 106 × 58 mm 1 A12: 155.9 × 75.5 mm 2
Side
XDA Comet: 106 × 19 mm 1 A12: 155.9 × 8.3 mm 2
  1. 1. XDA Comet
    Height
    106 mm
    Width
    58 mm
    Depth
    19 mm+10.7 mm versus A12
    Weight
    145 g
  2. 2. A12
    Height
    155.9 mm+49.9 mm versus XDA Comet
    Width
    75.5 mm+17.5 mm versus XDA Comet
    Depth
    8.3 mm
    Weight
    165 g
Weight

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

  1. 1. XDA Comet145 g
  2. 2. A12165 g

    +20 g versus XDA Comet

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.

Screen size
XDA Comet: 2.7 in, 4:3, About 22.6 cm² rectangular area 1 A12: 6.22 in, 19:9, About 96.6 cm² rectangular area 2
  1. 1. XDA Comet 2.7 in · 4:3 About 22.6 cm² rectangular area
  2. 2. A12 6.22 in · 19:9 About 96.6 cm² rectangular area

A12 has approximately 327.7% 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.

Recorded RAM by storage capacity and phone
StorageXDA CometA12
32 GB Unknown 3 GB RAM
64 GB Unknown 4 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. XDA Comet

NFC
Unknown
Headphone jack
No
Memory card support
See details miniSD

2. A12

NFC
Unknown
Headphone jack
Yes
Memory card support
See details microSDXC

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. XDA Comet2. A12

Everyday essentials
Everyday essentials
SpecificationXDA CometA12
Dimensions (HxWxD)
  • 106 Х 58 Х 19 mm
  • 155.9 Х 75.5 Х 8.3 mm
Weight
  • 145 g
  • 165 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.7" inch
  • 6.22" inch
Screen resolution
  • 240 x 320 px
  • 720 x 1520 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 MB RAM
  • 1 GB ROM
  • 32GB 3GB RAM
  • 64GB 4GB RAM
Memory card support
  • miniSD
  • microSDXC
BatteryCapacity is not battery life. No endurance test is implied.
  • 0 mAh,
  • 4230 mAh
  • Non-removable Li-Po
Operating system OS
  • Microsoft Windows Mobile 6.0 Professional
  • Android 9.0 (Pie); ColorOS 6.1
Chipset Unknown
  • Mediatek MT6765 Helio P35 (12nm)
Headphone jack
  • No
  • Yes
Display
Display
SpecificationXDA CometA12
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 22.6 cm2
  • 96.6 cm2
Screen format
  • 4:3 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 36.7%
  • 82.0%
PPI /points per inch/
  • 148 PPI
  • 270 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video
SpecificationXDA CometA12
Rear camera, main
  • 2 MP
  • Single
  • 13 MP
  • Dual
Camera specs
  • 2 MP
  • 13 MP
  • f/2.2
  • 1/3.1''
  • 1.12µm
  • PDAF -2 MP
  • f/2.4
  • (depth)
Functions
  • LED flash
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • VGA videocall camera
  • 5 MP
  • f/2.0
  • 1/5''
  • 1.12µm
Performance
Performance
SpecificationXDA CometA12
Processor CPU
  • Intel XScale PXA 270 620 MHz
  • Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
Graphics processor GPU Unknown
  • PowerVR GE8320
General specs
General specs
SpecificationXDA CometA12
Release date
  • 2007
  • September
  • 2020
  • April 20
Colors
  • Silver
  • Blue
  • Black
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer. Unknown
  • 150 EUR
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 6 h
Unknown
Body build Unknown
  • Glass front
  • plastic back
  • plastic frame
Communication and Connectivity
Communication and Connectivity
SpecificationXDA CometA12
SIM card
  • Mini-SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 38(2600)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA
  • HSPA
  • LTE-A
GPRS
  • Class 10
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11b/g
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 1.2
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio
SpecificationXDA CometA12
Radio
  • Stereo FM radio
  • RDS
  • FM radio
Others
  • Handwriting recognition
  • 450 nits typ. brightness
Other features
Other features
SpecificationXDA CometA12
Dop
  • Infrared port - Pocket Office -Voice memo -MP3/AAC player
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass