Celkon A40 vs HTC One Dual Sim

Compare recorded specifications, size and practical differences.

+ Add a third phone

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: 29.5 g lighter

    A40:
    126.5 g
    One Dual Sim:
    156 g
  • Width

    A40: 5.3 mm narrower

    A40:
    64 mm
    One Dual Sim:
    69.3 mm
  • Screen diagonal

    A40: 0.68 in smaller diagonal

    A40:
    4 in
    One Dual Sim:
    4.68 in
  • Height

    A40: 11.6 mm shorter

    A40:
    126.2 mm
    One Dual Sim:
    137.8 mm
  • Release year

    A40:
    2014
    One Dual Sim:
    2013

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
  2. 2. One Dual Sim

    Height:
    137.8 mm +11.6 mm versus A40
    Width:
    69.3 mm +5.3 mm versus A40
    Depth:
    10.4 mm

Weight

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

  1. 1. A40

    126.5 g

  2. 2. One Dual Sim

    156 g

    +29.5 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. One Dual Sim

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

One Dual Sim has approximately 32.6% 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.

Recorded RAM for A40, One Dual Sim, compared at the same storage capacity.
StorageA40One Dual Sim
32 GB Unknown 2 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. One Dual Sim

NFC:
See details Yes (market dependent)
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 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. One Dual Sim

    2300 mAh

    +800 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. One Dual Sim

Everyday essentials
Everyday essentials — specifications for A40, One Dual Sim.
SpecificationA40One Dual Sim
Dimensions (HxWxD)
  • 126.2 Х 64 Х 10.8 mm
  • 137.8 Х 69.3 Х 10.4 mm
Weight
  • 126.5 g
  • 156 g
Technology
  • TFT
  • Super LCD3
Screen size
  • 4" inch
  • 4.68" inch
Screen resolution
  • 480 x 800 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 32 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 64 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Li-Ion
  • 2300 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 4.2.2 (Jelly Bean)
  • Android 4.1.2 (Jelly Bean)
  • upgradable to 5 (Lollipop); Sense UI 5
Chipset Unknown
  • Qualcomm APQ8064T Snapdragon 600
NFC Unknown
  • Yes (market dependent)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A40, One Dual Sim.
SpecificationA40One Dual Sim
Touchscreen
  • touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 45.5 cm2
  • 60.4 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 56.4%
  • 63.2%
PPI /points per inch/
  • 233 PPI
  • 471 PPI
Screen protection Unknown
  • Corning Gorilla Glass 2
Camera and Video
Camera and Video — specifications for A40, One Dual Sim.
SpecificationA40One Dual Sim
Rear camera, main
  • 5 MP
  • Single
  • 4 MP
  • Single
Camera specs
  • 5 MP
  • 4 MP
  • 1/3''
  • 2µm
  • OIS
  • AF
Functions Unknown
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 2.1 MP
  • Single
Specifications
  • VGA
  • 2.1 MP
Performance

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

Performance — specifications for A40, One Dual Sim.
SpecificationA40One Dual Sim
Processor CPU
  • Dual-core 1.3 GHz
  • Quad-core 1.7 GHz Krait 300
Graphics processor GPU Unknown
  • Adreno 320
GeekBench 4 Single Core * Unknown
  • 703
GeekBench 4 Multi-Core * Unknown
  • 1630
GeekBench 4 RenderScript * Unknown
  • 598
General specs
General specs — specifications for A40, One Dual Sim.
SpecificationA40One Dual Sim
Release date
  • 2014
  • January
  • 2013
  • June
Colors
  • White
  • Yellow
  • Blue
  • Silver
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 300 EUR
Battery life Unknown
  • Stand by time- Up to 500 h (2G) / Up to 480 h (3G) Talking time- Up to 27 h (2G) / Up to 18 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for A40, One Dual Sim.
SpecificationA40One Dual Sim
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 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed Unknown
  • HSPA 21.1/5.76 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • Wi-Fi Direct
  • DLNA
  • hotspot
GPS
  • Yes
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0 (MHL TV-out)
Bluetooth
  • 2.0
  • 4.0
  • A2DP
  • aptX
Harmful irradiation Unknown
  • SAR - 1.27 W/kg (head)
Music and Audio
Music and Audio — specifications for A40, One Dual Sim.
SpecificationA40One Dual Sim
Radio
  • FM radio
  • Stereo FM radio
  • RDS
Others Unknown
  • Beats Audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for A40, One Dual Sim.
SpecificationA40One Dual Sim
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port