Karbonn A27 Retina vs O2 XDA Exec

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

    A27 Retina: 158.5 g lighter

    A27 Retina:
    126.5 g
    XDA Exec:
    285 g
  • Width

    A27 Retina: 15 mm narrower

    A27 Retina:
    66 mm
    XDA Exec:
    81 mm
  • Screen diagonal

    XDA Exec: 0.7 in smaller diagonal

    A27 Retina:
    4.3 in
    XDA Exec:
    3.6 in
  • Depth

    A27 Retina: 15.9 mm thinner

    A27 Retina:
    9.1 mm
    XDA Exec:
    25 mm
  • Height

    XDA Exec: 6.6 mm shorter

    A27 Retina:
    133.6 mm
    XDA Exec:
    127 mm
  • Release year

    A27 Retina:
    2013
    XDA Exec:
    2005

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. A27 Retina

    Height:
    133.6 mm +6.6 mm versus XDA Exec
    Width:
    66 mm
    Depth:
    9.1 mm
  2. 2. XDA Exec

    Height:
    127 mm
    Width:
    81 mm +15 mm versus A27 Retina
    Depth:
    25 mm +15.9 mm versus A27 Retina

Weight

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

  1. 1. A27 Retina

    126.5 g

  2. 2. XDA Exec

    285 g

    +158.5 g versus A27 Retina

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. A27 Retina

    Screen diagonal:
    4.3 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    51 cm²
  2. 2. XDA Exec

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

A27 Retina has approximately 27% more rectangular screen area than XDA Exec.

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.

A27 Retina: Original memory entry

4 GB · 512 MB RAM

XDA Exec: Original memory entry

64 MB RAM · 128 MB 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. A27 Retina

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

2. XDA Exec

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details SDIO/MMC

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. A27 Retina

    1800 mAh

    +180 mAh versus XDA Exec

  2. 2. XDA Exec

    1620 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. A27 Retina2. XDA Exec

Everyday essentials
Everyday essentials — specifications for A27 Retina, XDA Exec.
SpecificationA27 RetinaXDA Exec
Dimensions (HxWxD)
  • 133.6 Х 66 Х 9.1 mm
  • 127 Х 81 Х 25 mm
Weight
  • 126.5 g
  • 285 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 4.3" inch
  • 3.6" inch
Screen resolution
  • 540 x 960 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
  • 64 MB RAM
  • 128 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • SDIO/MMC
Battery Capacity is not battery life. No endurance test is implied.
  • 1800 mAh
  • Li-Ion
  • 1620 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.1 (Jelly Bean)
  • Microsoft Windows Mobile 5.0 PocketPC
Headphone jack
  • Yes
  • No
Display
Display — specifications for A27 Retina, XDA Exec.
SpecificationA27 RetinaXDA Exec
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors Unknown
  • 65K
Screen area
  • 51.0 cm2
  • 40.1 cm2
Screen format
  • 16:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 57.8%
  • 39.0%
PPI /points per inch/
  • 256 PPI
  • 222 PPI
Camera and Video
Camera and Video — specifications for A27 Retina, XDA Exec.
SpecificationA27 RetinaXDA Exec
Rear camera, main
  • 8 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 1.3 MP
Functions
  • LED flash
Unknown
Video
  • Yes
  • Yes
Front camera, selfie
  • 2 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 2 MP
  • VGA videocall camera
Performance
Performance — specifications for A27 Retina, XDA Exec.
SpecificationA27 RetinaXDA Exec
Processor CPU
  • Dual-core 1.2 GHz
  • Intel Bulverde 520 MHz
General specs
General specs — specifications for A27 Retina, XDA Exec.
SpecificationA27 RetinaXDA Exec
Release date
  • 2013
  • March
  • 2005
  • August
Colors
  • Black
  • Stylish black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 160 EUR
  • 300 EUR
Battery life
  • Stand by time- Up to 180 h Talking time- Up to 4 h
  • Stand by time- Up to 250 h Talking time- Up to 8 h
Communication and Connectivity
Communication and Connectivity — specifications for A27 Retina, XDA Exec.
SpecificationA27 RetinaXDA Exec
SIM card
  • Dual SIM (Mini-SIM)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
Speed
  • HSPA 7.2/0.384 Mbps
  • Yes
  • 384 kbps
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • No
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11b
GPS
  • Yes
  • with A-GPS
  • No
USB
  • Proprietary
  • miniUSB
Bluetooth
  • Yes
  • 1.2
Harmful irradiation
  • SAR EU - 1.00 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for A27 Retina, XDA Exec.
SpecificationA27 RetinaXDA Exec
Radio
  • FM radio
  • No
Others Unknown
  • Handwriting recognition
  • Dual speakers
Other features
Other features — specifications for A27 Retina, XDA Exec.
SpecificationA27 RetinaXDA Exec
Dop
  • Sensors Accelerometer
  • Infrared port - Pocket Office -Voice memo -MP3/AAC player - Produced by HTC. Functionally identical to Qtek 9000
  • i-mate JASJAR and T-Mobile MDA IV.