Karbonn A27 Retina vs O2 XDA IIs

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: 83.5 g lighter

    A27 Retina:
    126.5 g
    XDA IIs:
    210 g
  • Width

    A27 Retina: 5 mm narrower

    A27 Retina:
    66 mm
    XDA IIs:
    71 mm
  • Screen diagonal

    XDA IIs: 0.8 in smaller diagonal

    A27 Retina:
    4.3 in
    XDA IIs:
    3.5 in
  • Depth

    A27 Retina: 9.9 mm thinner

    A27 Retina:
    9.1 mm
    XDA IIs:
    19 mm
  • Height

    XDA IIs: 8.6 mm shorter

    A27 Retina:
    133.6 mm
    XDA IIs:
    125 mm
  • Release year

    A27 Retina:
    2013
    XDA IIs:
    2004

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 +8.6 mm versus XDA IIs
    Width:
    66 mm
    Depth:
    9.1 mm
  2. 2. XDA IIs

    Height:
    125 mm
    Width:
    71 mm +5 mm versus A27 Retina
    Depth:
    19 mm +9.9 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 IIs

    210 g

    +83.5 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 IIs

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

A27 Retina has approximately 34.4% more rectangular screen area than XDA IIs.

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 IIs: Original memory entry

128 MB RAM · 96 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 IIs

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

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

    +310 mAh versus XDA IIs

  2. 2. XDA IIs

    1490 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 IIs

Everyday essentials
Everyday essentials — specifications for A27 Retina, XDA IIs.
SpecificationA27 RetinaXDA IIs
Dimensions (HxWxD)
  • 133.6 Х 66 Х 9.1 mm
  • 125 Х 71 Х 19 mm
Weight
  • 126.5 g
  • 210 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 4.3" inch
  • 3.5" inch
Screen resolution
  • 540 x 960 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 128 MB RAM
  • 96 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • MMC/SDIO
Battery Capacity is not battery life. No endurance test is implied.
  • 1800 mAh
  • Li-Ion
  • 1490 mAh
  • Removable Li-Po
Operating system OS
  • Android 4.1 (Jelly Bean)
  • Microsoft Windows Mobile 2003 SE PocketPC
Headphone jack
  • Yes
  • No
Display
Display — specifications for A27 Retina, XDA IIs.
SpecificationA27 RetinaXDA IIs
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors Unknown
  • 65K
Screen area
  • 51.0 cm2
  • 37.9 cm2
Screen format
  • 16:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 57.8%
  • 42.7%
PPI /points per inch/
  • 256 PPI
  • 114 PPI
Camera and Video
Camera and Video — specifications for A27 Retina, XDA IIs.
SpecificationA27 RetinaXDA IIs
Rear camera, main
  • 8 MP
  • Single
  • 0.3 MP
  • Single
Camera specs
  • 8 MP
  • AF
Unknown
Functions
  • LED flash
Unknown
Video
  • Yes
  • Yes
Front camera, selfie
  • 2 MP
  • Single
  • 0 MP,
Specifications
  • 2 MP
Unknown
Performance
Performance — specifications for A27 Retina, XDA IIs.
SpecificationA27 RetinaXDA IIs
Processor CPU
  • Dual-core 1.2 GHz
  • Intel XScale PXA263 400 MHz
General specs
General specs — specifications for A27 Retina, XDA IIs.
SpecificationA27 RetinaXDA IIs
Release date
  • 2013
  • March
  • 2004
  • Q4
Colors
  • Black
Unknown
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 160 EUR
Unknown
Battery life
  • Stand by time- Up to 180 h Talking time- Up to 4 h
  • Stand by time- Up to 168 h Talking time- Up to 4 h
Communication and Connectivity
Communication and Connectivity — specifications for A27 Retina, XDA IIs.
SpecificationA27 RetinaXDA IIs
SIM card
  • Dual SIM (Mini-SIM)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
Unknown
Speed
  • HSPA 7.2/0.384 Mbps
Unknown
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
  • Proprietary
Bluetooth
  • Yes
  • Yes
Harmful irradiation
  • SAR EU - 1.00 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for A27 Retina, XDA IIs.
SpecificationA27 RetinaXDA IIs
Radio
  • FM radio
  • No
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for A27 Retina, XDA IIs.
SpecificationA27 RetinaXDA IIs
Dop
  • Sensors Accelerometer
  • Infrared port - Pocket Office -MP3/MP4 player -Voice memo - Produced by HTC. Functionally identical to Qtek 9090
  • i-mate PDA2k
  • T-Mobile MDA III and Orange SPV M2000.