Celkon Q500 Millennium Ultra vs Oppo Ace2

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.

  • Display technology

    OLED versus LCD

    Q500 Millennium Ultra:
    LCD
    Ace2:
    OLED
  • Weight

    Q500 Millennium Ultra: 37 g lighter

    Q500 Millennium Ultra:
    149 g
    Ace2:
    186 g
  • Width

    Q500 Millennium Ultra: 3.6 mm narrower

    Q500 Millennium Ultra:
    71.8 mm
    Ace2:
    75.4 mm
  • Screen diagonal

    Q500 Millennium Ultra: 1.55 in smaller diagonal

    Q500 Millennium Ultra:
    5 in
    Ace2:
    6.55 in
  • Rear camera layout

    Q500 Millennium Ultra:
    Single
    Ace2:
    Quad
  • Depth

    Q500 Millennium Ultra: 0.6 mm thinner

    Q500 Millennium Ultra:
    8 mm
    Ace2:
    8.6 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. Q500 Millennium Ultra

    Height:
    145.6 mm
    Width:
    71.8 mm
    Depth:
    8 mm
  2. 2. Ace2

    Height:
    160 mm +14.4 mm versus Q500 Millennium Ultra
    Width:
    75.4 mm +3.6 mm versus Q500 Millennium Ultra
    Depth:
    8.6 mm +0.6 mm versus Q500 Millennium Ultra

Weight

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

  1. 1. Q500 Millennium Ultra

    149 g

  2. 2. Ace2

    186 g

    +37 g versus Q500 Millennium Ultra

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. Q500 Millennium Ultra

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²
  2. 2. Ace2

    Screen diagonal:
    6.55 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    103.6 cm²

Ace2 has approximately 50.3% more rectangular screen area than Q500 Millennium Ultra.

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 Q500 Millennium Ultra, Ace2, compared at the same storage capacity.
StorageQ500 Millennium UltraAce2
16 GB 2 GB RAM Not recorded
128 GB Not recorded 8 GB RAM
256 GB Not recorded 8 / 12 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. Q500 Millennium Ultra

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

2. Ace2

NFC:
Yes
Headphone jack:
No
Memory card support:
No

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. Q500 Millennium Ultra

    2500 mAh

  2. 2. Ace2

    4000 mAh

    +1500 mAh versus Q500 Millennium Ultra

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. Q500 Millennium Ultra2. Ace2

Everyday essentials
Everyday essentials — specifications for Q500 Millennium Ultra, Ace2.
SpecificationQ500 Millennium UltraAce2
Dimensions (HxWxD)
  • 145.6 Х 71.8 Х 8 mm
  • 160 Х 75.4 Х 8.6 mm
Weight
  • 149 g
  • 186 g
Technology
  • IPS LCD
  • AMOLED
Screen size
  • 5" inch
  • 6.55" inch
Screen resolution
  • 720 x 1280 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 2 GB RAM
  • 128GB 8GB RAM
  • 256GB 8GB RAM
  • 256GB 12GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 2500 mAh
  • Li-Ion
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 4.4.2 (KitKat)
  • Android 10.0; ColorOS 7.1
Chipset
  • Broadcom BCM23550
  • Qualcomm SM8250 Snapdragon 865 (7 nm+)
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • No
Display
Display — specifications for Q500 Millennium Ultra, Ace2.
SpecificationQ500 Millennium UltraAce2
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 68.9 cm2
  • 103.6 cm2
Screen format
  • 16:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 65.9%
  • 85.9%
PPI /points per inch/
  • 294 PPI
  • 402 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Q500 Millennium Ultra, Ace2.
SpecificationQ500 Millennium UltraAce2
Rear camera, main
  • 8 MP
  • Single
  • 48 MP
  • Quad
Camera specs
  • 8 MP
  • AF
  • 48 MP
  • f/1.7
  • 26mm (wide)
  • 1/2.0''
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4.0''
  • 1.12µm
  • AF -2 MP B/W
  • (depth) -2 MP
  • (depth)
Functions
  • LED flash
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 2 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 2 MP
  • 16 MP
  • f/2.4
  • 29mm (wide)
  • 1/3.1''
  • 1.0µm
Performance
Performance — specifications for Q500 Millennium Ultra, Ace2.
SpecificationQ500 Millennium UltraAce2
Processor CPU
  • Quad-core 1.2 GHz
  • Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585)
Graphics processor GPU Unknown
  • Adreno 650
General specs
General specs — specifications for Q500 Millennium Ultra, Ace2.
SpecificationQ500 Millennium UltraAce2
Release date
  • 2014
  • 2020
  • April 13
Colors
  • White
  • Aurora Silver
  • Moon Rock Grey
  • Fantasy Purple
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 120 EUR
  • 520 EUR
Battery life
  • Stand by time- Up to 200 h (3G) Talking time- Up to 5 h (3G)
Unknown
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • glass back (Gorilla Glass 5)
  • aluminum frame
Communication and Connectivity
Communication and Connectivity — specifications for Q500 Millennium Ultra, Ace2.
SpecificationQ500 Millennium UltraAce2
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 2CDMA 800 / 1900 & TD-SCDMA -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 12(700)
  • 17(700)
  • 20(800)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500) - China -5G - 5G band 1(2100)
  • 41(2500)
  • 78(3500)
  • 79(4700); SA/NSA - China
Speed
  • HSPA
  • HSPA
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac/ax
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • Yes
  • with dual-band A-GPS
  • GLONASS
  • BDS
  • GALILEO
  • QZSS
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.0
  • A2DP
  • 5.1
  • A2DP
  • LE
  • aptX HD
Music and Audio
Music and Audio — specifications for Q500 Millennium Ultra, Ace2.
SpecificationQ500 Millennium UltraAce2
Radio
  • FM radio
Unknown
Others Unknown
  • 500 nits typ. brightness (advertised) -HDR10+ -90Hz refresh rate
Other features
Other features — specifications for Q500 Millennium Ultra, Ace2.
SpecificationQ500 Millennium UltraAce2
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 65W
  • 100% in 30 min (advertised) -SuperVOOC 2.0 -Fast wireless charging 40W
  • 100% in 56 min (advertised) -Wireless reverse charging 10W