Celkon A40 vs Celkon Millennia OCTA510

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: 9.5 g lighter

    A40:
    126.5 g
    Millennia OCTA510:
    136 g
  • Width

    A40: 7 mm narrower

    A40:
    64 mm
    Millennia OCTA510:
    71 mm
  • Screen diagonal

    A40: 1 in smaller diagonal

    A40:
    4 in
    Millennia OCTA510:
    5 in
  • Depth

    Millennia OCTA510: 1.7 mm thinner

    A40:
    10.8 mm
    Millennia OCTA510:
    9.1 mm
  • Height

    A40: 17.3 mm shorter

    A40:
    126.2 mm
    Millennia OCTA510:
    143.5 mm
  • Release year

    A40:
    2014
    Millennia OCTA510:
    2015

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 Millennia OCTA510
  2. 2. Millennia OCTA510

    Height:
    143.5 mm +17.3 mm versus A40
    Width:
    71 mm +7 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. Millennia OCTA510

    136 g

    +9.5 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. Millennia OCTA510

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

Millennia OCTA510 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, Millennia OCTA510, compared at the same storage capacity.
StorageA40Millennia OCTA510
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. Millennia OCTA510

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. A40

    1500 mAh

  2. 2. Millennia OCTA510

    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. Millennia OCTA510

Everyday essentials
Everyday essentials — specifications for A40, Millennia OCTA510.
SpecificationA40Millennia OCTA510
Dimensions (HxWxD)
  • 126.2 Х 64 Х 10.8 mm
  • 143.5 Х 71 Х 9.1 mm
Weight
  • 126.5 g
  • 136 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 4" inch
  • 5" inch
Screen resolution
  • 480 x 800 px
  • 720 x 1280 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
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Li-Ion
  • 2000 mAh
  • Li-Ion
Operating system OS
  • Android 4.2.2 (Jelly Bean)
  • Android 4.4.2 (KitKat)
Chipset Unknown
  • Mediatek MT6592M (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A40, Millennia OCTA510.
SpecificationA40Millennia OCTA510
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%
  • 67.6%
PPI /points per inch/
  • 233 PPI
  • 294 PPI
Camera and Video
Camera and Video — specifications for A40, Millennia OCTA510.
SpecificationA40Millennia OCTA510
Rear camera, main
  • 5 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 5 MP
  • 8 MP
Functions Unknown
  • Dual-LED flash
Video
  • Yes
  • 720p
Front camera, selfie
  • 0.3 MP
  • Single
  • 3.15 MP
  • Single
Specifications
  • VGA
  • 3.15 MP
Performance
Performance — specifications for A40, Millennia OCTA510.
SpecificationA40Millennia OCTA510
Processor CPU
  • Dual-core 1.3 GHz
  • Octa-core 1.4 GHz Cortex-A7
Graphics processor GPU Unknown
  • Mali-450MP4
General specs
General specs — specifications for A40, Millennia OCTA510.
SpecificationA40Millennia OCTA510
Release date
  • 2014
  • January
  • 2015
  • January
Colors
  • White
  • Yellow
  • Blue
  • White
Communication and Connectivity
Communication and Connectivity — specifications for A40, Millennia OCTA510.
SpecificationA40Millennia OCTA510
SIM card
  • Dual SIM
  • Dual SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 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 b/g/n
  • hotspot
GPS
  • Yes
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB Host
Bluetooth
  • 2.0
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for A40, Millennia OCTA510.
SpecificationA40Millennia OCTA510
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for A40, Millennia OCTA510.
SpecificationA40Millennia OCTA510
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • proximity