Karbonn Smart A12 Star vs Vertu Constellation Quest

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

    Smart A12 Star: 35 g lighter

    Smart A12 Star:
    130 g
    Constellation Quest:
    165 g
  • Width

    Constellation Quest: 3.4 mm narrower

    Smart A12 Star:
    64.2 mm
    Constellation Quest:
    60.8 mm
  • Screen diagonal

    Constellation Quest: 1.54 in smaller diagonal

    Smart A12 Star:
    4 in
    Constellation Quest:
    2.46 in
  • Depth

    Smart A12 Star: 2.6 mm thinner

    Smart A12 Star:
    10.1 mm
    Constellation Quest:
    12.7 mm
  • Height

    Constellation Quest: 8 mm shorter

    Smart A12 Star:
    124.2 mm
    Constellation Quest:
    116.2 mm
  • Release year

    Smart A12 Star:
    2014
    Constellation Quest:
    2010

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. Smart A12 Star

    Height:
    124.2 mm +8 mm versus Constellation Quest
    Width:
    64.2 mm +3.4 mm versus Constellation Quest
    Depth:
    10.1 mm
  2. 2. Constellation Quest

    Height:
    116.2 mm
    Width:
    60.8 mm
    Depth:
    12.7 mm +2.6 mm versus Smart A12 Star

Weight

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

  1. 1. Smart A12 Star

    130 g

  2. 2. Constellation Quest

    165 g

    +35 g versus Smart A12 Star

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. Smart A12 Star

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²
  2. 2. Constellation Quest

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

Smart A12 Star has approximately 143% more rectangular screen area than Constellation Quest.

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.

Smart A12 Star: Original memory entry

4 GB · 512 MB RAM

Constellation Quest: Original memory entry

8 GB

Practical features

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

1. Smart A12 Star

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB

2. Constellation Quest

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot) · 32 GB included

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. Smart A12 Star

    1400 mAh

  2. 2. Constellation Quest

    1500 mAh

    +100 mAh versus Smart A12 Star

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. Smart A12 Star2. Constellation Quest

Everyday essentials
Everyday essentials — specifications for Smart A12 Star, Constellation Quest.
SpecificationSmart A12 StarConstellation Quest
Dimensions (HxWxD)
  • 124.2 Х 64.2 Х 10.1 mm
  • 116.2 Х 60.8 Х 12.7 mm
Weight
  • 130 g
  • 165 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 4" inch
  • 2.46" inch
Screen resolution
  • 480 x 800 px
  • 640 x 480 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 8 GB
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 32 GB (dedicated slot)
  • 32 GB included
Battery Capacity is not battery life. No endurance test is implied.
  • 1400 mAh
  • Li-Ion
  • 1500 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 4.4.2 (KitKat)
  • Symbian OS
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Smart A12 Star, Constellation Quest.
SpecificationSmart A12 StarConstellation Quest
Touchscreen
  • capacitive touchscreen
Unknown
Display colors
  • 16M
  • 16M
Screen area
  • 45.5 cm2
  • 18.7 cm2
Screen format
  • 5:3 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 57.1%
  • 26.5%
PPI /points per inch/
  • 233 PPI
  • 325 PPI
Camera and Video
Camera and Video — specifications for Smart A12 Star, Constellation Quest.
SpecificationSmart A12 StarConstellation Quest
Rear camera, main
  • 5 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 5 MP
  • 5 MP
  • AF
Functions
  • LED flash
  • Dual-LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 0 MP,
Specifications
  • VGA
Unknown
Performance
Performance — specifications for Smart A12 Star, Constellation Quest.
SpecificationSmart A12 StarConstellation Quest
Processor CPU
  • Dual-core 1.2 GHz
Unknown
General specs
General specs — specifications for Smart A12 Star, Constellation Quest.
SpecificationSmart A12 StarConstellation Quest
Release date
  • 2014
  • July
  • 2010
  • October
Colors
  • Black
  • Silver
  • Pink
  • Black
  • Brown
  • Yellow Gold
  • Carbon fibre with gold
  • Carbon fibre
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 50 EUR
  • 6140 EUR
Battery life
  • Stand by time- Up to 300 h
  • Stand by time- Up to 350 h (2G) / Up to 430 h (3G) Talking time- Up to 7 h 30 min (2G) / Up to 5 h 40 min (3G)
Communication and Connectivity
Communication and Connectivity — specifications for Smart A12 Star, Constellation Quest.
SpecificationSmart A12 StarConstellation Quest
SIM card
  • Dual SIM (Micro-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA
  • HSPA 10.2/2 Mbps
GPRS
  • Yes
  • Class 32
Edge
  • Yes
  • Class 32
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • 2.1
  • A2DP
Harmful irradiation
  • SAR EU - 0.79 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for Smart A12 Star, Constellation Quest.
SpecificationSmart A12 StarConstellation Quest
Radio
  • FM radio
  • Stereo FM radio
  • RDS
Other features
Other features — specifications for Smart A12 Star, Constellation Quest.
SpecificationSmart A12 StarConstellation Quest
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • compass - Facebook
  • Twitter apps -MP4/H.263 player -MP3/WMA/WAV/eAAC+ player -QuickOffice editor (Word
  • Excel
  • PowerPoint) -PDF viewer -Voice memo/dial/commands -Organizer -Vertu Concierge service -Predictive text input - Optical trackpad