HTC Desire U vs Karbonn Smart A12 Star

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

    Desire U: 16 g lighter

    Desire U:
    114 g
    Smart A12 Star:
    130 g
  • Width

    Desire U: 1.9 mm narrower

    Desire U:
    62.3 mm
    Smart A12 Star:
    64.2 mm
  • Depth

    Desire U: 0.8 mm thinner

    Desire U:
    9.3 mm
    Smart A12 Star:
    10.1 mm
  • Height

    Desire U: 5.7 mm shorter

    Desire U:
    118.5 mm
    Smart A12 Star:
    124.2 mm
  • Release year

    Desire U:
    2013
    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. Desire U

    Height:
    118.5 mm
    Width:
    62.3 mm
    Depth:
    9.3 mm
  2. 2. Smart A12 Star

    Height:
    124.2 mm +5.7 mm versus Desire U
    Width:
    64.2 mm +1.9 mm versus Desire U
    Depth:
    10.1 mm +0.8 mm versus Desire U

Weight

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

  1. 1. Desire U

    114 g

  2. 2. Smart A12 Star

    130 g

    +16 g versus Desire U

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. Desire U

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²
  2. 2. Smart A12 Star

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

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.

Desire U: Original memory entry

4 GB · 512 MB RAM

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. Desire U

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

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. Desire U

    1650 mAh

    +250 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. Desire U2. Smart A12 Star

Everyday essentials
Everyday essentials — specifications for Desire U, Smart A12 Star.
SpecificationDesire USmart A12 Star
Dimensions (HxWxD)
  • 118.5 Х 62.3 Х 9.3 mm
  • 124.2 Х 64.2 Х 10.1 mm
Weight
  • 114 g
  • 130 g
Technology
  • Super LCD
  • IPS LCD
Screen size
  • 4" inch
  • 4" inch
Screen resolution
  • 480 x 800 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 1650 mAh
  • Removable Li-Ion
  • 1400 mAh
  • Li-Ion
Operating system OS
  • Android 4.0 (Ice Cream Sandwich)
  • Android 4.4.2 (KitKat)
NFC
  • Optional
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Desire U, Smart A12 Star.
SpecificationDesire USmart A12 Star
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 45.5 cm2
  • 45.5 cm2
Screen format
  • 5:3 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 61.7%
  • 57.1%
PPI /points per inch/
  • 233 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for Desire U, Smart A12 Star.
SpecificationDesire USmart A12 Star
Rear camera, main
  • 5 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 5 MP
  • AF
  • 5 MP
Functions
  • LED flash
  • LED flash
Video
  • w480p@30fps
  • Yes
Front camera, selfie
  • 0 MP,
  • 0.3 MP
  • Single
Specifications Unknown
  • VGA
Performance
Performance — specifications for Desire U, Smart A12 Star.
SpecificationDesire USmart A12 Star
Processor CPU
  • 1.0 GHz
  • Dual-core 1.2 GHz
General specs
General specs — specifications for Desire U, Smart A12 Star.
SpecificationDesire USmart A12 Star
Release date
  • 2013
  • January
  • 2014
  • July
Colors
  • White
  • Black
  • Orange
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
  • 50 EUR
Battery life Unknown
  • Stand by time- Up to 300 h
Communication and Connectivity
Communication and Connectivity — specifications for Desire U, Smart A12 Star.
SpecificationDesire USmart A12 Star
SIM card
  • Dual SIM (Mini-SIM
  • dual stand-by)
  • Dual SIM (Micro-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Speed
  • HSPA
  • HSPA
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • aptX
  • 2.0
Harmful irradiation
  • SAR - 1.31 W/kg (head) 0.96 W/kg (body)
  • SAR EU - 0.79 W/kg (head)
Music and Audio
Music and Audio — specifications for Desire U, Smart A12 Star.
SpecificationDesire USmart A12 Star
Radio
  • No
  • FM radio
Others
  • Beats Audio
Unknown
Other features
Other features — specifications for Desire U, Smart A12 Star.
SpecificationDesire USmart A12 Star
Dop
  • Sensors Accelerometer
  • proximity - HTC T327w for Chinа
  • Sensors Accelerometer
  • proximity