Celkon Millennia Hero vs Oppo R2001 Yoyo

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: 32 g lighter

    Millennia Hero:
    113 g
    R2001 Yoyo:
    145 g
  • Width

    Millennia Hero: 5.5 mm narrower

    Millennia Hero:
    64 mm
    R2001 Yoyo:
    69.5 mm
  • Screen diagonal

    Millennia Hero: 0.7 in smaller diagonal

    Millennia Hero:
    4 in
    R2001 Yoyo:
    4.7 in
  • Depth

    R2001 Yoyo: 1.8 mm thinner

    Millennia Hero:
    11 mm
    R2001 Yoyo:
    9.2 mm
  • Height

    Millennia Hero: 13.5 mm shorter

    Millennia Hero:
    125 mm
    R2001 Yoyo:
    138.5 mm
  • Release year

    Millennia Hero:
    2015
    R2001 Yoyo:
    2014

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 +1.8 mm versus R2001 Yoyo
  2. 2. R2001 Yoyo

    Height:
    138.5 mm +13.5 mm versus Millennia Hero
    Width:
    69.5 mm +5.5 mm versus Millennia Hero
    Depth:
    9.2 mm

Weight

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

  1. 1. Millennia Hero

    113 g

  2. 2. R2001 Yoyo

    145 g

    +32 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. R2001 Yoyo

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

R2001 Yoyo has approximately 33.7% 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, R2001 Yoyo, compared at the same storage capacity.
StorageMillennia HeroR2001 Yoyo
4 GB Not recorded 1 GB RAM
8 GB 1 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. Millennia Hero

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

2. R2001 Yoyo

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 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. R2001 Yoyo

    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. R2001 Yoyo

Everyday essentials
Everyday essentials — specifications for Millennia Hero, R2001 Yoyo.
SpecificationMillennia HeroR2001 Yoyo
Dimensions (HxWxD)
  • 125 Х 64 Х 11 mm
  • 138.5 Х 69.5 Х 9.2 mm
Weight
  • 113 g
  • 145 g
Technology Unknown
  • IPS LCD
Screen size
  • 4" inch
  • 4.7" inch
Screen resolution
  • 480 x 800 px
  • 540 x 960 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 1 GB RAM
  • 4 GB
  • 1 GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1700 mAh
  • Li-Ion
  • 1900 mAh
  • Removable Li-Ion
Operating system OS
  • Android 5.1 (Lollipop)
  • Android 4.2.1 (Jelly Bean)
Chipset Unknown
  • Mediatek MT6582M (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Millennia Hero, R2001 Yoyo.
SpecificationMillennia HeroR2001 Yoyo
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 45.5 cm2
  • 60.9 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 56.9%
  • 63.3%
PPI /points per inch/
  • 233 PPI
  • 234 PPI
Camera and Video
Camera and Video — specifications for Millennia Hero, R2001 Yoyo.
SpecificationMillennia HeroR2001 Yoyo
Rear camera, main
  • 5 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 5 MP
  • 5 MP
  • AF
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • 720p
Front camera, selfie
  • 3.2 MP
  • Single
  • 2 MP
  • Single
Specifications
  • 3.2 MP
  • 2 MP
Performance

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

Performance — specifications for Millennia Hero, R2001 Yoyo.
SpecificationMillennia HeroR2001 Yoyo
Processor CPU
  • Quad-core 1.2 GHz
  • Quad-core 1.3 GHz Cortex-A7
Graphics processor GPU Unknown
  • Mali-400MP2
Antutu 7 score * Unknown
  • 16115
General specs
General specs — specifications for Millennia Hero, R2001 Yoyo.
SpecificationMillennia HeroR2001 Yoyo
Release date
  • 2015
  • August
  • 2014
  • May
Colors
  • Black
  • White/Gold
  • White/Silver
  • Black/Gold
  • White
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 200 EUR
Battery life Unknown
  • Stand by time- Up to 350 h Talking time- Up to 6 h
Communication and Connectivity
Communication and Connectivity — specifications for Millennia Hero, R2001 Yoyo.
SpecificationMillennia HeroR2001 Yoyo
SIM card
  • Dual SIM
  • Dual 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 42.2/11.5 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • 2.1
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, R2001 Yoyo.
SpecificationMillennia HeroR2001 Yoyo
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for Millennia Hero, R2001 Yoyo.
SpecificationMillennia HeroR2001 Yoyo
Dop
  • Sensors Accelerometer
  • Sensors Accelerometer
  • proximity