Karbonn A27 Retina vs Lava A51

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.

  • Screen diagonal

    A27 Retina: 0.2 in smaller diagonal

    A27 Retina:
    4.3 in
    A51:
    4.5 in
  • Depth

    A27 Retina: 0.8 mm thinner

    A27 Retina:
    9.1 mm
    A51:
    9.9 mm
  • Height

    A27 Retina: 2.4 mm shorter

    A27 Retina:
    133.6 mm
    A51:
    136 mm
  • Release year

    A27 Retina:
    2013
    A51:
    2016

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
    Width:
    66 mm
    Depth:
    9.1 mm
    Weight:
    126.5 g
  2. 2. A51

    Height:
    136 mm +2.4 mm versus A27 Retina
    Width:
    66 mm
    Depth:
    9.9 mm +0.8 mm versus A27 Retina
    Weight:
    Unknown

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. A51

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

A51 has approximately 9.5% more rectangular screen area than A27 Retina.

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

A51: Original memory entry

8 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. A27 Retina

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

2. A51

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. A27 Retina

    1800 mAh

    +50 mAh versus A51

  2. 2. A51

    1750 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. A51

Everyday essentials
Everyday essentials — specifications for A27 Retina, A51.
SpecificationA27 RetinaA51
Dimensions (HxWxD)
  • 133.6 Х 66 Х 9.1 mm
  • 136 Х 66 Х 9.9 mm
Weight
  • 126.5 g
  • 0 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 4.3" inch
  • 4.5" inch
Screen resolution
  • 540 x 960 px
  • 480 x 854 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 8 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.
  • 1800 mAh
  • Li-Ion
  • 1750 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.1 (Jelly Bean)
  • Android 6.0 (Marshmallow)
Chipset Unknown
  • Spreadtrum SC7731C
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A27 Retina, A51.
SpecificationA27 RetinaA51
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 51.0 cm2
  • 55.8 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 57.8%
  • 62.2%
PPI /points per inch/
  • 256 PPI
  • 218 PPI
Camera and Video
Camera and Video — specifications for A27 Retina, A51.
SpecificationA27 RetinaA51
Rear camera, main
  • 8 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 5 MP
Functions
  • LED flash
  • LED flash
  • panorama
Video
  • Yes
  • Yes
Front camera, selfie
  • 2 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 2 MP
  • VGA
Performance
Performance — specifications for A27 Retina, A51.
SpecificationA27 RetinaA51
Processor CPU
  • Dual-core 1.2 GHz
  • Quad-core 1.2 GHz
General specs
General specs — specifications for A27 Retina, A51.
SpecificationA27 RetinaA51
Release date
  • 2013
  • March
  • 2016
  • October
Colors
  • Black
  • Gray
  • Black
  • Gold
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 420 h (3G) Talking time- Up to 10 h 30 min (3G)
Communication and Connectivity
Communication and Connectivity — specifications for A27 Retina, A51.
SpecificationA27 RetinaA51
SIM card
  • Dual SIM (Mini-SIM)
  • Dual SIM
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 7.2/0.384 Mbps
  • HSPA
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • Proprietary
  • microUSB 2.0
Bluetooth
  • Yes
  • 2.1
  • EDR
Harmful irradiation
  • SAR EU - 1.00 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for A27 Retina, A51.
SpecificationA27 RetinaA51
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for A27 Retina, A51.
SpecificationA27 RetinaA51
Dop
  • Sensors Accelerometer
  • Sensors Accelerometer For India