Celkon Millennia Hero vs vivo Y15S

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: 17 g lighter

    Millennia Hero:
    113 g
    Y15S:
    130 g
  • Width

    Millennia Hero: 2.2 mm narrower

    Millennia Hero:
    64 mm
    Y15S:
    66.2 mm
  • Screen diagonal

    Millennia Hero: 0.5 in smaller diagonal

    Millennia Hero:
    4 in
    Y15S:
    4.5 in
  • Depth

    Y15S: 2 mm thinner

    Millennia Hero:
    11 mm
    Y15S:
    9 mm
  • Height

    Millennia Hero: 6.4 mm shorter

    Millennia Hero:
    125 mm
    Y15S:
    131.4 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 mm versus Y15S
  2. 2. Y15S

    Height:
    131.4 mm +6.4 mm versus Millennia Hero
    Width:
    66.2 mm +2.2 mm versus Millennia Hero
    Depth:
    9 mm

Weight

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

  1. 1. Millennia Hero

    113 g

  2. 2. Y15S

    130 g

    +17 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. Y15S

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

Y15S has approximately 22.6% 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, Y15S, compared at the same storage capacity.
StorageMillennia HeroY15S
8 GB Recorded for all phones 1 GB RAM 1 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. Y15S

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. Y15S

    1900 mAh

    +200 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. Y15S

Everyday essentials
Everyday essentials — specifications for Millennia Hero, Y15S.
SpecificationMillennia HeroY15S
Dimensions (HxWxD)
  • 125 Х 64 Х 11 mm
  • 131.4 Х 66.2 Х 9 mm
Weight
  • 113 g
  • 130 g
Technology Unknown
  • IPS LCD
Screen size
  • 4" inch
  • 4.5" 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.
  • 8 GB
  • 1 GB RAM
  • 8 GB
  • 1 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
  • 1900 mAh
  • Removable Li-Po
Operating system OS
  • Android 5.1 (Lollipop)
  • Android 5.1 (Lollipop)
Chipset Unknown
  • Mediatek MT6580 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Millennia Hero, Y15S.
SpecificationMillennia HeroY15S
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 45.5 cm2
  • 55.8 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 56.9%
  • 64.1%
PPI /points per inch/
  • 233 PPI
  • 218 PPI
Camera and Video
Camera and Video — specifications for Millennia Hero, Y15S.
SpecificationMillennia HeroY15S
Rear camera, main
  • 5 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 5 MP
  • 5 MP
  • AF
Functions
  • LED flash
  • LED flash
  • HDR
  • panorama
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 3.2 MP
  • Single
  • 2 MP
  • Single
Specifications
  • 3.2 MP
  • 2 MP
Performance
Performance — specifications for Millennia Hero, Y15S.
SpecificationMillennia HeroY15S
Processor CPU
  • Quad-core 1.2 GHz
  • Quad-core 1.3 GHz Cortex-A7
Graphics processor GPU Unknown
  • Mali-400MP2
General specs
General specs — specifications for Millennia Hero, Y15S.
SpecificationMillennia HeroY15S
Release date
  • 2015
  • August
  • 2015
  • August
Colors
  • Black
  • White/Gold
  • White/Silver
  • Black/Gold
  • White
  • Black
Battery life Unknown
  • Stand by time- Up to 410 h (2G) / Up to 410 h (3G) Talking time- Up to 10 h (2G) / Up to 8 h (3G) Music play - Up to 45 h
Communication and Connectivity
Communication and Connectivity — specifications for Millennia Hero, Y15S.
SpecificationMillennia HeroY15S
SIM card
  • Dual SIM
  • Dual SIM (Micro-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
Speed
  • HSPA
  • HSPA
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0 USB On-The-Go
Bluetooth
  • 2.0
  • 4.0
  • A2DP
  • EDR
Harmful irradiation
  • SAR EU - 0.34 W/kg (head) 0.76 W/kg (body)
  • SAR - 0.62 W/kg (head) 0.59 W/kg (body) SAR EU - 0.76 W/kg (head) 0.73 W/kg (body)
Music and Audio
Music and Audio — specifications for Millennia Hero, Y15S.
SpecificationMillennia HeroY15S
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for Millennia Hero, Y15S.
SpecificationMillennia HeroY15S
Dop
  • Sensors Accelerometer
  • Sensors Accelerometer
  • proximity
  • compass
  • Infrared port