Celkon A40 vs Haier G51

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

    A40: 28.5 g lighter

    A40:
    126.5 g
    G51:
    155 g
  • Width

    A40: 8.9 mm narrower

    A40:
    64 mm
    G51:
    72.9 mm
  • Screen diagonal

    A40: 1 in smaller diagonal

    A40:
    4 in
    G51:
    5 in
  • Depth

    G51: 1.7 mm thinner

    A40:
    10.8 mm
    G51:
    9.1 mm
  • Height

    A40: 16.4 mm shorter

    A40:
    126.2 mm
    G51:
    142.6 mm
  • Release year

    A40:
    2014
    G51:
    2017

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. A40

    Height:
    126.2 mm
    Width:
    64 mm
    Depth:
    10.8 mm +1.7 mm versus G51
  2. 2. G51

    Height:
    142.6 mm +16.4 mm versus A40
    Width:
    72.9 mm +8.9 mm versus A40
    Depth:
    9.1 mm

Weight

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

  1. 1. A40

    126.5 g

  2. 2. G51

    155 g

    +28.5 g versus A40

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. A40

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²
  2. 2. G51

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

G51 has approximately 51.3% 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.

Recorded RAM for A40, G51, compared at the same storage capacity.
StorageA40G51
8 GB Unknown 1 GB RAM
A40: Original memory entry

4 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. G51

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

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. A40

    1500 mAh

  2. 2. G51

    2000 mAh

    +500 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. G51

Everyday essentials
Everyday essentials — specifications for A40, G51.
SpecificationA40G51
Dimensions (HxWxD)
  • 126.2 Х 64 Х 10.8 mm
  • 142.6 Х 72.9 Х 9.1 mm
Weight
  • 126.5 g
  • 155 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 4" inch
  • 5" inch
Screen resolution
  • 480 x 800 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
  • 1 GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Li-Ion
  • 2000 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.2.2 (Jelly Bean)
  • Android 7.0 (Nougat)
Chipset Unknown
  • Mediatek MT6737M (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A40, G51.
SpecificationA40G51
Touchscreen
  • touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 45.5 cm2
  • 68.9 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 56.4%
  • 66.3%
PPI /points per inch/
  • 233 PPI
  • 196 PPI
Screen protection Unknown
  • Scratch-resistant glass
Camera and Video
Camera and Video — specifications for A40, G51.
SpecificationA40G51
Rear camera, main
  • 5 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 5 MP
  • 5 MP
  • AF
  • f/2.0
Functions Unknown
  • Dual-LED dual-tone flash
Video
  • Yes
  • 720p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • VGA
  • 5 MP
  • f/2.4
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for A40, G51.
SpecificationA40G51
Processor CPU
  • Dual-core 1.3 GHz
  • Quad-core 1.25 GHz Cortex-A53
Graphics processor GPU Unknown
  • Mali-T720MP1
Antutu 7 score * Unknown
  • 29322
General specs
General specs — specifications for A40, G51.
SpecificationA40G51
Release date
  • 2014
  • January
  • 2017
Colors
  • White
  • Yellow
  • Blue
  • Black
  • Gold
  • White
  • Blue
Communication and Connectivity
Communication and Connectivity — specifications for A40, G51.
SpecificationA40G51
SIM card
  • Dual SIM
  • Dual SIM (Micro-SIM
  • dual stand-by)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 HSDPA 850 / 1900 -4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 8(900)
  • 20(800) LTE band 2(1900)
  • 4(1700/2100)
  • 5(850)
Speed Unknown
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • 4.0
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR EU - 0.71 W/kg (head) 1.11 W/kg (body)
Music and Audio
Music and Audio — specifications for A40, G51.
SpecificationA40G51
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for A40, G51.
SpecificationA40G51
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • proximity