Coolpad Cool S1 vs Karbonn Smart A12 Star

Compare recorded specifications, size and practical differences.

+ Add a third phone

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: 38 g lighter

    Cool S1:
    168 g
    Smart A12 Star:
    130 g
  • Width

    Smart A12 Star: 10.5 mm narrower

    Cool S1:
    74.7 mm
    Smart A12 Star:
    64.2 mm
  • Screen diagonal

    Smart A12 Star: 1.5 in smaller diagonal

    Cool S1:
    5.5 in
    Smart A12 Star:
    4 in
  • Depth

    Cool S1: 2.6 mm thinner

    Cool S1:
    7.5 mm
    Smart A12 Star:
    10.1 mm
  • Height

    Smart A12 Star: 27.2 mm shorter

    Cool S1:
    151.4 mm
    Smart A12 Star:
    124.2 mm
  • Release year

    Cool S1:
    2016
    Smart A12 Star:
    2014

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. Cool S1

    Height:
    151.4 mm +27.2 mm versus Smart A12 Star
    Width:
    74.7 mm +10.5 mm versus Smart A12 Star
    Depth:
    7.5 mm
  2. 2. Smart A12 Star

    Height:
    124.2 mm
    Width:
    64.2 mm
    Depth:
    10.1 mm +2.6 mm versus Cool S1

Weight

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

  1. 1. Cool S1

    168 g

    +38 g versus Smart A12 Star

  2. 2. Smart A12 Star

    130 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. Cool S1

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²
  2. 2. Smart A12 Star

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

Cool S1 has approximately 83.1% more rectangular screen area than Smart A12 Star.

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.

Cool S1: Original memory entry

128 GB · 6 GB RAM 64 GB · 512GB 4GB

Smart A12 Star: Original memory entry

4 GB · 512 MB RAM

Practical features

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

1. Cool S1

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

2. Smart A12 Star

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

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. Cool S1

    4070 mAh

    +2670 mAh versus Smart A12 Star

  2. 2. Smart A12 Star

    1400 mAh

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. Cool S12. Smart A12 Star

Everyday essentials
Everyday essentials — specifications for Cool S1, Smart A12 Star.
SpecificationCool S1Smart A12 Star
Dimensions (HxWxD)
  • 151.4 Х 74.7 Х 7.5 mm
  • 124.2 Х 64.2 Х 10.1 mm
Weight
  • 168 g
  • 130 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.5" inch
  • 4" inch
Screen resolution
  • 1080 x 1920 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 GB
  • 6 GB RAM 64 GB
  • 512GB 4GB
  • 4 GB
  • 512 MB RAM
Memory card support
  • No
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 4070 mAh
  • Non-removable Li-Po
  • 1400 mAh
  • Li-Ion
Operating system OS
  • Android 6.0.1 (Marshmallow); eUI 5.8
  • Android 4.4.2 (KitKat)
Chipset
  • Qualcomm MSM8996 Snapdragon 821 (14 nm)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Cool S1, Smart A12 Star.
SpecificationCool S1Smart A12 Star
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.4 cm2
  • 45.5 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 73.7%
  • 57.1%
PPI /points per inch/
  • 401 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for Cool S1, Smart A12 Star.
SpecificationCool S1Smart A12 Star
Rear camera, main
  • 16 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 16 MP
  • PDAF
  • f/2.0
  • 5 MP
Functions
  • Dual-LED dual-tone flash
  • HDR
  • panorama
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 8 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 8 MP
  • VGA
Performance

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

Performance — specifications for Cool S1, Smart A12 Star.
SpecificationCool S1Smart A12 Star
Processor CPU
  • Quad-core (2x2.35 GHz Kryo & 2x1.6 GHz Kryo)
  • Dual-core 1.2 GHz
Graphics processor GPU
  • Adreno 530
Unknown
GeekBench 4 Single Core *
  • 1818
Unknown
GeekBench 4 Multi-Core *
  • 3877
Unknown
GeekBench 4 RenderScript *
  • 7272
Unknown
General specs
General specs — specifications for Cool S1, Smart A12 Star.
SpecificationCool S1Smart A12 Star
Release date
  • 2016
  • December
  • 2014
  • July
Colors
  • Gold
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 420 EUR
  • 50 EUR
Battery life Unknown
  • Stand by time- Up to 300 h
Communication and Connectivity
Communication and Connectivity — specifications for Cool S1, Smart A12 Star.
SpecificationCool S1Smart A12 Star
SIM card
  • Dual SIM
  • Dual SIM (Micro-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA -4G - LTE
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Speed
  • HSPA
  • LTE
  • HSPA
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • Type-C 1.0 reversible connector
  • microUSB 2.0
Bluetooth
  • 4.1
  • A2DP
  • LE
  • 2.0
Harmful irradiation Unknown
  • SAR EU - 0.79 W/kg (head)
Music and Audio
Music and Audio — specifications for Cool S1, Smart A12 Star.
SpecificationCool S1Smart A12 Star
Radio
  • FM radio
  • FM radio
Others
  • Active noise cancellation with dedicated mic -Harman Kardon sound enhancement
Unknown
Other features
Other features — specifications for Cool S1, Smart A12 Star.
SpecificationCool S1Smart A12 Star
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - Fast battery charging (Quick Charge 3.0)
  • Sensors Accelerometer
  • proximity