Karbonn A7 Star vs O2 XDA Stellar

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.

  • Width

    XDA Stellar: 7 mm narrower

    A7 Star:
    66 mm
    XDA Stellar:
    59 mm
  • Screen diagonal

    XDA Stellar: 1.7 in smaller diagonal

    A7 Star:
    4.5 in
    XDA Stellar:
    2.8 in
  • Chipset

    A7 Star:
    Mediatek MT6517
    XDA Stellar:
    Qualcomm MSM7200
  • Depth

    A7 Star: 8.2 mm thinner

    A7 Star:
    10.4 mm
    XDA Stellar:
    18.6 mm
  • Release year

    A7 Star:
    2013
    XDA Stellar:
    2007

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. A7 Star

    Height:
    113 mm
    Width:
    66 mm +7 mm versus XDA Stellar
    Depth:
    10.4 mm
    Weight:
    Unknown
  2. 2. XDA Stellar

    Height:
    112 mm
    Width:
    59 mm
    Depth:
    18.6 mm +8.2 mm versus A7 Star
    Weight:
    190 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. A7 Star

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    55.8 cm²
  2. 2. XDA Stellar

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

A7 Star has approximately 129.9% more rectangular screen area than XDA Stellar.

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.

A7 Star: Original memory entry

164 MB

XDA Stellar: Original memory entry

128 MB RAM · 256 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. A7 Star

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

2. XDA Stellar

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD

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. A7 Star

    1400 mAh

    +50 mAh versus XDA Stellar

  2. 2. XDA Stellar

    1350 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. A7 Star2. XDA Stellar

Everyday essentials
Everyday essentials — specifications for A7 Star, XDA Stellar.
SpecificationA7 StarXDA Stellar
Dimensions (HxWxD)
  • 113 Х 66 Х 10.4 mm
  • 112 Х 59 Х 18.6 mm
Weight
  • 0 g
  • 190 g
Technology Unknown
  • TFT
Screen size
  • 4.5" inch
  • 2.8" inch
Screen resolution
  • 480 x 854 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 164 MB
  • 128 MB RAM
  • 256 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
Battery Capacity is not battery life. No endurance test is implied.
  • 1400 mAh
  • Removable Li-Ion
  • 1350 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.0 (Ice Cream Sandwich)
  • Microsoft Windows Mobile 6.0 Professional
Chipset
  • Mediatek MT6517
  • Qualcomm MSM7200
Headphone jack
  • Yes
  • No
Display
Display — specifications for A7 Star, XDA Stellar.
SpecificationA7 StarXDA Stellar
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors Unknown
  • 65K
Screen area
  • 55.8 cm2
  • 24.3 cm2
Screen format
  • 16:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 74.8%
  • 36.7%
PPI /points per inch/
  • 218 PPI
  • 143 PPI
Camera and Video
Camera and Video — specifications for A7 Star, XDA Stellar.
SpecificationA7 StarXDA Stellar
Rear camera, main
  • 5 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 5 MP
  • 3.15 MP
  • AF
Functions
  • LED flash
Unknown
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 0.3 MP
  • Single
Specifications Unknown
  • VGA videocall camera
Performance
Performance — specifications for A7 Star, XDA Stellar.
SpecificationA7 StarXDA Stellar
Processor CPU
  • Dual-core 1.0 GHz Cortex-A9
  • 400 MHz ARM 11
Graphics processor GPU
  • PowerVR SGX531u
  • Adreno 130
General specs
General specs — specifications for A7 Star, XDA Stellar.
SpecificationA7 StarXDA Stellar
Release date
  • 2013
  • 2007
  • November
Colors
  • white/black
  • Silver
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
Unknown
Battery life
  • Stand by time- Up to 135 h Talking time- Up to 5 h
  • Stand by time- Up to 365 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity — specifications for A7 Star, XDA Stellar.
SpecificationA7 StarXDA Stellar
SIM card
  • Dual SIM
  • Mini-SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed Unknown
  • HSPA 3.6/0.384 Mbps
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11b/g
GPS
  • No
  • Yes
  • with A-GPS
USB
  • Proprietary
  • 2.0
Bluetooth
  • Yes
  • 2.0
Harmful irradiation
  • SAR EU - 0.99 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for A7 Star, XDA Stellar.
SpecificationA7 StarXDA Stellar
Radio
  • FM radio
  • No
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for A7 Star, XDA Stellar.
SpecificationA7 StarXDA Stellar
Dop
  • Sensors Accelerometer
  • proximity
  • Pocket Office -Business card reader -Voice memo -Media Player 10 HTC Kaiser platform