Karbonn A7 Star vs Nokia N81

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

    N81: 16 mm narrower

    A7 Star:
    66 mm
    N81:
    50 mm
  • Screen diagonal

    N81: 2.1 in smaller diagonal

    A7 Star:
    4.5 in
    N81:
    2.4 in
  • Depth

    A7 Star: 7.5 mm thinner

    A7 Star:
    10.4 mm
    N81:
    17.9 mm
  • Height

    N81: 11 mm shorter

    A7 Star:
    113 mm
    N81:
    102 mm
  • Release year

    A7 Star:
    2013
    N81:
    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 +11 mm versus N81
    Width:
    66 mm +16 mm versus N81
    Depth:
    10.4 mm
    Weight:
    Unknown
  2. 2. N81

    Height:
    102 mm
    Width:
    50 mm
    Depth:
    17.9 mm +7.5 mm versus A7 Star
    Weight:
    140 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. N81

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

A7 Star has approximately 213% more rectangular screen area than N81.

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

N81: Original memory entry

12 MB · 96 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. A7 Star

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

2. N81

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 8 GB (dedicated slot) · 2 GB included

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

    +350 mAh versus N81

  2. 2. N81

    1050 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. N81

Everyday essentials
Everyday essentials — specifications for A7 Star, N81.
SpecificationA7 StarN81
Dimensions (HxWxD)
  • 113 Х 66 Х 10.4 mm
  • 102 Х 50 Х 17.9 mm
Weight
  • 0 g
  • 140 g
Technology Unknown
  • TFT
Screen size
  • 4.5" inch
  • 2.4" 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
  • 12 MB
  • 96 MB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 8 GB (dedicated slot)
  • 2 GB included
Battery Capacity is not battery life. No endurance test is implied.
  • 1400 mAh
  • Removable Li-Ion
  • 1050 mAh
  • Removable Li-Po
Operating system OS
  • Android 4.0 (Ice Cream Sandwich)
  • Symbian OS 9.2
  • Series 60 v3.1 UI
Chipset
  • Mediatek MT6517
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A7 Star, N81.
SpecificationA7 StarN81
Touchscreen
  • capacitive touchscreen
Unknown
Display colors Unknown
  • 16M
Screen area
  • 55.8 cm2
  • 17.8 cm2
Screen format
  • 16:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 74.8%
  • 35.0%
PPI /points per inch/
  • 218 PPI
  • 167 PPI
Camera and Video
Camera and Video — specifications for A7 Star, N81.
SpecificationA7 StarN81
Rear camera, main
  • 5 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 5 MP
  • 2 MP
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • 320p@15fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 0.3 MP
  • Single
Specifications Unknown
  • CIF videocall camera
Performance
Performance — specifications for A7 Star, N81.
SpecificationA7 StarN81
Processor CPU
  • Dual-core 1.0 GHz Cortex-A9
  • 369 MHz ARM 11
Graphics processor GPU
  • PowerVR SGX531u
Unknown
General specs
General specs — specifications for A7 Star, N81.
SpecificationA7 StarN81
Release date
  • 2013
  • 2007
  • August
Colors
  • white/black
  • Cobalt blue
  • Graphite Grey
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 200 EUR
Battery life
  • Stand by time- Up to 135 h Talking time- Up to 5 h
  • Stand by time- Up to 410 h Talking time- Up to 4 h (2G) / 3 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for A7 Star, N81.
SpecificationA7 StarN81
SIM card
  • Dual SIM
  • Mini-SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed Unknown
  • Yes
  • 384 kbps
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11b/g with UPnP
GPS
  • No
  • No
USB
  • Proprietary
  • microUSB 2.0
Bluetooth
  • Yes
  • 2.0
  • A2DP
Harmful irradiation
  • SAR EU - 0.99 W/kg (head)
  • SAR - 0.73 W/kg (head) 0.60 W/kg (body) SAR EU - 0.81 W/kg (head)
Music and Audio
Music and Audio — specifications for A7 Star, N81.
SpecificationA7 StarN81
Radio
  • FM radio
  • Stereo FM radio
Others Unknown
  • Touch-sensitive Navi wheel
Other features
Other features — specifications for A7 Star, N81.
SpecificationA7 StarN81
Dop
  • Sensors Accelerometer
  • proximity
  • MP3/AAC/MP4 player -Predictive text input -Push to talk -Voice dial/memo -Organizer