Celkon Millennia Hero vs vivo U3

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: 80 g lighter

    Millennia Hero:
    113 g
    U3:
    193 g
  • Width

    Millennia Hero: 12.5 mm narrower

    Millennia Hero:
    64 mm
    U3:
    76.5 mm
  • Screen diagonal

    Millennia Hero: 2.53 in smaller diagonal

    Millennia Hero:
    4 in
    U3:
    6.53 in
  • Rear camera layout

    Millennia Hero:
    Single
    U3:
    Triple
  • Depth

    U3: 2.1 mm thinner

    Millennia Hero:
    11 mm
    U3:
    8.9 mm
  • Height

    Millennia Hero: 37.2 mm shorter

    Millennia Hero:
    125 mm
    U3:
    162.2 mm

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 +2.1 mm versus U3
  2. 2. U3

    Height:
    162.2 mm +37.2 mm versus Millennia Hero
    Width:
    76.5 mm +12.5 mm versus Millennia Hero
    Depth:
    8.9 mm

Weight

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

  1. 1. Millennia Hero

    113 g

  2. 2. U3

    193 g

    +80 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. U3

    Screen diagonal:
    6.53 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    104.7 cm²

U3 has approximately 129.8% 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, U3, compared at the same storage capacity.
StorageMillennia HeroU3
8 GB 1 GB RAM Not recorded
64 GB Not recorded 4 / 6 GB RAM Alternative RAM configurations

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. U3

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

    1700 mAh

  2. 2. U3

    5000 mAh

    +3300 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. U3

Everyday essentials
Everyday essentials — specifications for Millennia Hero, U3.
SpecificationMillennia HeroU3
Dimensions (HxWxD)
  • 125 Х 64 Х 11 mm
  • 162.2 Х 76.5 Х 8.9 mm
Weight
  • 113 g
  • 193 g
Technology Unknown
  • IPS LCD
Screen size
  • 4" inch
  • 6.53" inch
Screen resolution
  • 480 x 800 px
  • 1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 1 GB RAM
  • 64GB 4GB RAM
  • 64GB 6GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 1700 mAh
  • Li-Ion
  • 5000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 5.1 (Lollipop)
  • Android 9.0 (Pie); Funtouch 9.0
Chipset Unknown
  • Qualcomm SDM675 Snapdragon 675 (11 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Millennia Hero, U3.
SpecificationMillennia HeroU3
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 45.5 cm2
  • 104.7 cm2
Screen format
  • 5:3 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 56.9%
  • 84.4%
PPI /points per inch/
  • 233 PPI
  • 395 PPI
Camera and Video
Camera and Video — specifications for Millennia Hero, U3.
SpecificationMillennia HeroU3
Rear camera, main
  • 5 MP
  • Single
  • 16 MP
  • Triple
Camera specs
  • 5 MP
  • 16 MP
  • f/1.8
  • (wide)
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide) -2 MP
  • f/2.4
  • macro camera
Functions
  • LED flash
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 3.2 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 3.2 MP
  • 16 MP
  • f/2.0
  • 26mm (wide)
  • 1/3.1"
  • 1.0µm
Performance

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

Performance — specifications for Millennia Hero, U3.
SpecificationMillennia HeroU3
Processor CPU
  • Quad-core 1.2 GHz
  • Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver)
Graphics processor GPU Unknown
  • Adreno 612
Antutu 8 score * Unknown
  • 212000
General specs
General specs — specifications for Millennia Hero, U3.
SpecificationMillennia HeroU3
Release date
  • 2015
  • August
  • 2019
  • October
Colors
  • Black
  • White/Gold
  • White/Silver
  • Black/Gold
  • Black
  • Blue
  • Green
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 150 USD
Communication and Connectivity
Communication and Connectivity — specifications for Millennia Hero, U3.
SpecificationMillennia HeroU3
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 -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA
  • HSPA 42.2/5.76 Mbps
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 2.0
  • 5.0
  • A2DP
  • LE
  • aptX
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, U3.
SpecificationMillennia HeroU3
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Millennia Hero, U3.
SpecificationMillennia HeroU3
Dop
  • Sensors Accelerometer
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - Fast battery charging 18W