Karbonn Smart A12 Star vs Philips W820

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: 13 g lighter

    Smart A12 Star:
    130 g
    W820:
    143 g
  • Width

    W820: 6.5 mm narrower

    Smart A12 Star:
    64.2 mm
    W820:
    57.7 mm
  • Screen diagonal

    W820: 0.8 in smaller diagonal

    Smart A12 Star:
    4 in
    W820:
    3.2 in
  • Depth

    Smart A12 Star: 4.7 mm thinner

    Smart A12 Star:
    10.1 mm
    W820:
    14.8 mm
  • Height

    W820: 9.6 mm shorter

    Smart A12 Star:
    124.2 mm
    W820:
    114.6 mm
  • Release year

    Smart A12 Star:
    2014
    W820:
    2012

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 +9.6 mm versus W820
    Width:
    64.2 mm +6.5 mm versus W820
    Depth:
    10.1 mm
  2. 2. W820

    Height:
    114.6 mm
    Width:
    57.7 mm
    Depth:
    14.8 mm +4.7 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. W820

    143 g

    +13 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. W820

    Screen diagonal:
    3.2 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    30.5 cm²

Smart A12 Star has approximately 49.4% more rectangular screen area than W820.

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

W820: Original memory entry

512 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. Smart A12 Star

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

2. W820

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

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. W820

    2100 mAh

    +700 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. W820

Everyday essentials
Everyday essentials — specifications for Smart A12 Star, W820.
SpecificationSmart A12 StarW820
Dimensions (HxWxD)
  • 124.2 Х 64.2 Х 10.1 mm
  • 114.6 Х 57.7 Х 14.8 mm
Weight
  • 130 g
  • 143 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 4" inch
  • 3.2" inch
Screen resolution
  • 480 x 800 px
  • 320 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
  • 512 MB
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1400 mAh
  • Li-Ion
  • 2100 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.4.2 (KitKat)
  • Android 2.3 (Gingerbread)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Smart A12 Star, W820.
SpecificationSmart A12 StarW820
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
Unknown
Screen area
  • 45.5 cm2
  • 30.5 cm2
Screen format
  • 5:3 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 57.1%
  • 46.1%
PPI /points per inch/
  • 233 PPI
  • 180 PPI
Camera and Video
Camera and Video — specifications for Smart A12 Star, W820.
SpecificationSmart A12 StarW820
Rear camera, main
  • 5 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 5 MP
  • 5 MP
  • AF
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • 176x144@15fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • VGA
Unknown
Performance
Performance — specifications for Smart A12 Star, W820.
SpecificationSmart A12 StarW820
Processor CPU
  • Dual-core 1.2 GHz
Unknown
General specs
General specs — specifications for Smart A12 Star, W820.
SpecificationSmart A12 StarW820
Release date
  • 2014
  • July
  • 2012
  • March
Colors
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 50 EUR
Unknown
Battery life
  • Stand by time- Up to 300 h
  • Stand by time- Up to 600 h Talking time- Up to 8 h
Communication and Connectivity
Communication and Connectivity — specifications for Smart A12 Star, W820.
SpecificationSmart A12 StarW820
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 900 / 1800 / 1900
Speed
  • HSPA
  • HSPA 7.2/0.384 Mbps
GPRS
  • Yes
  • Class 12
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • 2.0
Bluetooth
  • 2.0
  • 2.0
Harmful irradiation
  • SAR EU - 0.79 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for Smart A12 Star, W820.
SpecificationSmart A12 StarW820
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for Smart A12 Star, W820.
SpecificationSmart A12 StarW820
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • proximity
  • compass - MP3/WAV/WMA/AAC+ player -MP4/H.263 player -Document viewer -Photo viewer/editor -Organizer -Voice memo/dial -Predictive text input