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Celkon A40 vs Lava A51

Compare recorded specifications, size and practical differences.

Celkon A40

Celkon A40

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Lava A51

Lava A51

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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.

  • WidthA40: 2 mm narrowerA40: 64 mm · A51: 66 mm
  • Screen diagonalA40: 0.5 in smaller diagonalA40: 4 in · A51: 4.5 in
  • DepthA51: 0.9 mm thinnerA51: 9.9 mm · A40: 10.8 mm
  • HeightA40: 9.8 mm shorterA40: 126.2 mm · A51: 136 mm
  • Release year2014 / 2016A40: 2014 · 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.

Front
A40: 126.2 × 64 mm 1 A51: 136 × 66 mm 2
Side
A40: 126.2 × 10.8 mm 1 A51: 136 × 9.9 mm 2
  1. 1. A40
    Height
    126.2 mm
    Width
    64 mm
    Depth
    10.8 mm+0.9 mm versus A51
    Weight
    126.5 g
  2. 2. A51
    Height
    136 mm+9.8 mm versus A40
    Width
    66 mm+2 mm versus A40
    Depth
    9.9 mm
    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.

Screen size
A40: 4 in, 5:3, About 45.5 cm² rectangular area 1 A51: 4.5 in, 16:9, About 55.8 cm² rectangular area 2
  1. 1. A40 4 in · 5:3 About 45.5 cm² rectangular area
  2. 2. A51 4.5 in · 16:9 About 55.8 cm² rectangular area

A51 has approximately 22.6% more rectangular screen area than A40.

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.

A40: 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. A40

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 capacity

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

  1. 1. A401500 mAh
  2. 2. A511750 mAh

    +250 mAh versus A40

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. A402. A51

Everyday essentials
Everyday essentials
SpecificationA40A51
Dimensions (HxWxD)
  • 126.2 Х 64 Х 10.8 mm
  • 136 Х 66 Х 9.9 mm
Weight
  • 126.5 g
  • 0 g
Technology
  • TFT
  • TFT
Screen size
  • 4" inch
  • 4.5" inch
Screen resolution
  • 480 x 800 px
  • 480 x 854 px
Internal memoryRecorded 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
BatteryCapacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Li-Ion
  • 1750 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.2.2 (Jelly Bean)
  • Android 6.0 (Marshmallow)
Chipset Unknown
  • Spreadtrum SC7731C
Headphone jack
  • Yes
  • Yes
Display
Display
SpecificationA40A51
Touchscreen
  • touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 45.5 cm2
  • 55.8 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 56.4%
  • 62.2%
PPI /points per inch/
  • 233 PPI
  • 218 PPI
Camera and Video
Camera and Video
SpecificationA40A51
Rear camera, main
  • 5 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 5 MP
  • 5 MP
Functions Unknown
  • LED flash
  • panorama
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • VGA
  • VGA
Performance
Performance
SpecificationA40A51
Processor CPU
  • Dual-core 1.3 GHz
  • Quad-core 1.2 GHz
General specs
General specs
SpecificationA40A51
Release date
  • 2014
  • January
  • 2016
  • October
Colors
  • White
  • Yellow
  • Blue
  • Gray
  • Black
  • Gold
Battery life Unknown
  • Stand by time- Up to 420 h (3G) Talking time- Up to 10 h 30 min (3G)
Communication and Connectivity
Communication and Connectivity
SpecificationA40A51
SIM card
  • Dual SIM
  • Dual SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Speed Unknown
  • HSPA
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • 2.1
  • EDR
Music and Audio
Music and Audio
SpecificationA40A51
Radio
  • FM radio
  • FM radio
Other features
Other features
SpecificationA40A51
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer For India