Celkon Millennia Hero vs Oppo A83

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

    Millennia Hero: 30 g lighter

    Millennia Hero:
    113 g
    A83:
    143 g
  • Width

    Millennia Hero: 9.1 mm narrower

    Millennia Hero:
    64 mm
    A83:
    73.1 mm
  • Screen diagonal

    Millennia Hero: 1.7 in smaller diagonal

    Millennia Hero:
    4 in
    A83:
    5.7 in
  • Depth

    A83: 3.3 mm thinner

    Millennia Hero:
    11 mm
    A83:
    7.7 mm
  • Height

    Millennia Hero: 25.5 mm shorter

    Millennia Hero:
    125 mm
    A83:
    150.5 mm
  • Release year

    Millennia Hero:
    2015
    A83:
    2018

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. Millennia Hero

    Height:
    125 mm
    Width:
    64 mm
    Depth:
    11 mm +3.3 mm versus A83
  2. 2. A83

    Height:
    150.5 mm +25.5 mm versus Millennia Hero
    Width:
    73.1 mm +9.1 mm versus Millennia Hero
    Depth:
    7.7 mm

Weight

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

  1. 1. Millennia Hero

    113 g

  2. 2. A83

    143 g

    +30 g versus Millennia Hero

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. Millennia Hero

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²
  2. 2. A83

    Screen diagonal:
    5.7 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    83.8 cm²

A83 has approximately 84.1% more rectangular screen area than Millennia Hero.

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 Millennia Hero, A83, compared at the same storage capacity.
StorageMillennia HeroA83
8 GB 1 GB RAM Unknown
A83: Original memory entry

64/32 GB · 4 GB RAM 32 GB · 3 GB RAM 16 GB · 2 GB 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. Millennia Hero

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

2. A83

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 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. Millennia Hero

    1700 mAh

  2. 2. A83

    3180 mAh

    +1480 mAh versus Millennia Hero

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. Millennia Hero2. A83

Everyday essentials
Everyday essentials — specifications for Millennia Hero, A83.
SpecificationMillennia HeroA83
Dimensions (HxWxD)
  • 125 Х 64 Х 11 mm
  • 150.5 Х 73.1 Х 7.7 mm
Weight
  • 113 g
  • 143 g
Technology Unknown
  • IPS LCD
Screen size
  • 4" inch
  • 5.7" inch
Screen resolution
  • 480 x 800 px
  • 720 x 1440 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 1 GB RAM
  • 64/32 GB
  • 4 GB RAM 32 GB
  • 3 GB RAM 16 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1700 mAh
  • Li-Ion
  • 3180 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 5.1 (Lollipop)
  • Android 7.1 (Nougat); ColorOS 3.2
Chipset Unknown
  • Mediatek MT6763T Helio P23 (16 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Millennia Hero, A83.
SpecificationMillennia HeroA83
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 45.5 cm2
  • 83.8 cm2
Screen format
  • 5:3 (height:width)
  • 18:9 (height:width)
Screen to body ratio
  • 56.9%
  • 76.2%
PPI /points per inch/
  • 233 PPI
  • 282 PPI
Camera and Video
Camera and Video — specifications for Millennia Hero, A83.
SpecificationMillennia HeroA83
Rear camera, main
  • 5 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 5 MP
  • 13 MP
  • AF
  • f/2.2
Functions
  • LED flash
  • LED flash
  • HDR
  • panorama
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 3.2 MP
  • Single
  • 8 MP
  • Single
Specifications
  • 3.2 MP
  • 8 MP
  • f/2.2
Performance

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

Performance — specifications for Millennia Hero, A83.
SpecificationMillennia HeroA83
Processor CPU
  • Quad-core 1.2 GHz
  • Octa-core 2.5 GHz Cortex-A53
Graphics processor GPU Unknown
  • Mali-G71 MP2
Antutu 7 score * Unknown
  • 80225
GeekBench 4 Single Core * Unknown
  • 863
GeekBench 4 Multi-Core * Unknown
  • 3612
General specs
General specs — specifications for Millennia Hero, A83.
SpecificationMillennia HeroA83
Release date
  • 2015
  • August
  • 2018
  • January
Colors
  • Black
  • White/Gold
  • White/Silver
  • Black/Gold
  • Gold
  • Black
  • Red
  • Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 200 EUR
Body build Unknown
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for Millennia Hero, A83.
SpecificationMillennia HeroA83
SIM card
  • Dual SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA - China -3G - HSDPA 850 / 900 / 2100 - India
  • Thailand
  • Pakistan HSDPA 850 / 900 / 1900 / 2100 - China -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 38(2600)
  • 40(2300)
  • 41(2500) - India
  • Thailand LTE band 1(2100)
  • 7(2600)
  • 34(2000)
  • 39(1900)
  • 41(2500) - China (A83t) LTE band 1(2100)
  • 41(2500) - Pakistan
Speed
  • HSPA
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • A-GPS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 2.0
  • 4.2
  • A2DP
  • LE
Harmful irradiation
  • SAR EU - 0.34 W/kg (head) 0.76 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Millennia Hero, A83.
SpecificationMillennia HeroA83
Radio
  • FM radio
  • No
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Millennia Hero, A83.
SpecificationMillennia HeroA83
Dop
  • Sensors Accelerometer
  • Sensors Accelerometer
  • proximity
  • compass