Celkon Millennia Hero vs Icemobile Crystal

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.

  • Width

    Crystal: 7.8 mm narrower

    Millennia Hero:
    64 mm
    Crystal:
    56.2 mm
  • Screen diagonal

    Crystal: 0.5 in smaller diagonal

    Millennia Hero:
    4 in
    Crystal:
    3.5 in
  • Depth

    Millennia Hero: 2.1 mm thinner

    Millennia Hero:
    11 mm
    Crystal:
    13.1 mm
  • Height

    Crystal: 13.5 mm shorter

    Millennia Hero:
    125 mm
    Crystal:
    111.5 mm
  • Release year

    Millennia Hero:
    2015
    Crystal:
    2011

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 +13.5 mm versus Crystal
    Width:
    64 mm +7.8 mm versus Crystal
    Depth:
    11 mm
    Weight:
    113 g
  2. 2. Crystal

    Height:
    111.5 mm
    Width:
    56.2 mm
    Depth:
    13.1 mm +2.1 mm versus Millennia Hero
    Weight:
    Unknown

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. Crystal

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

Millennia Hero has approximately 30.6% more rectangular screen area than Crystal.

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, Crystal, compared at the same storage capacity.
StorageMillennia HeroCrystal
8 GB 1 GB RAM Unknown
Crystal: Original memory entry

512 MB + 256 MB

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. Crystal

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 2 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

    +650 mAh versus Crystal

  2. 2. Crystal

    1050 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. Millennia Hero2. Crystal

Everyday essentials
Everyday essentials — specifications for Millennia Hero, Crystal.
SpecificationMillennia HeroCrystal
Dimensions (HxWxD)
  • 125 Х 64 Х 11 mm
  • 111.5 Х 56.2 Х 13.1 mm
Weight
  • 113 g
  • 0 g
Technology Unknown
  • TFT
Screen size
  • 4" inch
  • 3.5" inch
Screen resolution
  • 480 x 800 px
  • 240 x 400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 1 GB RAM
  • 512 MB + 256 MB
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 2 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1700 mAh
  • Li-Ion
  • 1050 mAh
  • Removable Li-Ion
Operating system OS
  • Android 5.1 (Lollipop)
  • Android 2.2 (Froyo)
Chipset Unknown
  • Mediatek MT6516
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Millennia Hero, Crystal.
SpecificationMillennia HeroCrystal
Touchscreen
  • capacitive touchscreen
  • touchscreen
Display colors Unknown
  • 65K
Screen area
  • 45.5 cm2
  • 34.9 cm2
Screen format
  • 5:3 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 56.9%
  • 55.6%
PPI /points per inch/
  • 233 PPI
  • 133 PPI
Camera and Video
Camera and Video — specifications for Millennia Hero, Crystal.
SpecificationMillennia HeroCrystal
Rear camera, main
  • 5 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 5 MP
  • 1.3 MP
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 3.2 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 3.2 MP
Unknown
Performance
Performance — specifications for Millennia Hero, Crystal.
SpecificationMillennia HeroCrystal
Processor CPU
  • Quad-core 1.2 GHz
  • 416 MHz
General specs
General specs — specifications for Millennia Hero, Crystal.
SpecificationMillennia HeroCrystal
Release date
  • 2015
  • August
  • 2011
  • February
Colors
  • Black
  • White/Gold
  • White/Silver
  • Black/Gold
  • Black
  • White
Battery life Unknown
  • Stand by time- Up to 180 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity — specifications for Millennia Hero, Crystal.
SpecificationMillennia HeroCrystal
SIM card
  • Dual SIM
  • Dual SIM (Mini-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Unknown
Speed
  • HSPA
Unknown
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • No
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11
GPS
  • A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • Yes
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, Crystal.
SpecificationMillennia HeroCrystal
Radio
  • FM radio
  • Stereo FM radio
Other features
Other features — specifications for Millennia Hero, Crystal.
SpecificationMillennia HeroCrystal
Dop
  • Sensors Accelerometer
  • Sensors Accelerometer TV app -Organizer -MP4/H.264 player -MP3/AAC+ player -Predictive text input Trackball -Flashlight