Coolpad Cool 6 vs Celkon Millennia Hero

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: 85 g lighter

    Cool 6:
    198 g
    Millennia Hero:
    113 g
  • Width

    Millennia Hero: 12.5 mm narrower

    Cool 6:
    76.5 mm
    Millennia Hero:
    64 mm
  • Screen diagonal

    Millennia Hero: 2.53 in smaller diagonal

    Cool 6:
    6.53 in
    Millennia Hero:
    4 in
  • Rear camera layout

    Cool 6:
    Triple
    Millennia Hero:
    Single
  • Depth

    Cool 6: 1.8 mm thinner

    Cool 6:
    9.2 mm
    Millennia Hero:
    11 mm
  • Height

    Millennia Hero: 37.4 mm shorter

    Cool 6:
    162.4 mm
    Millennia Hero:
    125 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. Cool 6

    Height:
    162.4 mm +37.4 mm versus Millennia Hero
    Width:
    76.5 mm +12.5 mm versus Millennia Hero
    Depth:
    9.2 mm
  2. 2. Millennia Hero

    Height:
    125 mm
    Width:
    64 mm
    Depth:
    11 mm +1.8 mm versus Cool 6

Weight

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

  1. 1. Cool 6

    198 g

    +85 g versus Millennia Hero

  2. 2. Millennia Hero

    113 g

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. Cool 6

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

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

Cool 6 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 Cool 6, Millennia Hero, compared at the same storage capacity.
StorageCool 6Millennia Hero
8 GB Not recorded 1 GB RAM
64 GB 4 GB RAM Not recorded
128 GB 6 GB RAM Not recorded

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Cool 6

NFC:
No
Headphone jack:
No
Memory card support:
See details microSDXC (uses shared SIM slot)

2. Millennia Hero

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. Cool 6

    4000 mAh

    +2300 mAh versus Millennia Hero

  2. 2. Millennia Hero

    1700 mAh

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. Cool 62. Millennia Hero

Everyday essentials
Everyday essentials — specifications for Cool 6, Millennia Hero.
SpecificationCool 6Millennia Hero
Dimensions (HxWxD)
  • 162.4 Х 76.5 Х 9.2 mm
  • 125 Х 64 Х 11 mm
Weight
  • 198 g
  • 113 g
Technology
  • IPS LCD
Unknown
Screen size
  • 6.53" inc
  • 4" inch
Screen resolution
  • 1080 x 2340 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64GB 4GB RAM
  • 128GB 6GB RAM
  • 8 GB
  • 1 GB RAM
Memory card support
  • microSDXC (uses shared SIM slot)
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 4000 mAh
  • Li-Po
  • non-removable
  • 1700 mAh
  • Li-Ion
Operating system OS
  • Android 10
  • Android 5.1 (Lollipop)
Chipset
  • - Mediatek MT6771T Helio P70 (12nm)
Unknown
NFC
  • No
Unknown
Headphone jack
  • No
  • Yes
Display
Display — specifications for Cool 6, Millennia Hero.
SpecificationCool 6Millennia Hero
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
Unknown
Screen area
  • 104.7 cm2
  • 45.5 cm2
Screen format
  • 19.5:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 84.3%
  • 56.9%
PPI /points per inch/ Unknown
  • 233 PPI
Camera and Video
Camera and Video — specifications for Cool 6, Millennia Hero.
SpecificationCool 6Millennia Hero
Rear camera, main
  • 48 MP
  • Triple
  • 5 MP
  • Single
Camera specs
  • -48 MP
  • (wide)
  • 1/2.0''
  • 0.8µm
  • PDAF -2 MP
  • f/2.4
  • (macro) -2 MP
  • (depth)
  • 5 MP
Functions
  • LED flash
  • panorama
  • HDR
  • LED flash
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 21 MP
  • Single
  • 3.2 MP
  • Single
Specifications
  • Motorized pop-up 21 MP
  • 3.2 MP
Performance
Performance — specifications for Cool 6, Millennia Hero.
SpecificationCool 6Millennia Hero
Processor CPU
  • - Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
  • Quad-core 1.2 GHz
Graphics processor GPU
  • - Mali-G72 MP3
Unknown
General specs
General specs — specifications for Cool 6, Millennia Hero.
SpecificationCool 6Millennia Hero
Release date
  • 2020
  • October 15
  • 2015
  • August
Colors
  • Gray
  • Blue
  • Black
  • White/Gold
  • White/Silver
  • Black/Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 130 EUR
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Cool 6, Millennia Hero.
SpecificationCool 6Millennia Hero
SIM card
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE
  • HSPA
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Yes
  • Wi-Fi 802.11 b/g/n
GPS
  • Yes
  • with A-GPS
  • A-GPS
USB
  • USB Type-C 2.0
  • microUSB 2.0
Bluetooth
  • Yes
  • 2.0
Harmful irradiation Unknown
  • SAR EU - 0.34 W/kg (head) 0.76 W/kg (body)
Music and Audio
Music and Audio — specifications for Cool 6, Millennia Hero.
SpecificationCool 6Millennia Hero
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for Cool 6, Millennia Hero.
SpecificationCool 6Millennia Hero
Dop
  • - Sensors - Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass
  • Sensors Accelerometer