Archos 55b Cobalt 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

    55b Cobalt:
    LCD
    Ace2:
    OLED
  • Screen diagonal

    55b Cobalt: 1.05 in smaller diagonal

    55b Cobalt:
    5.5 in
    Ace2:
    6.55 in
  • Chipset

    55b Cobalt:
    Qualcomm MSM8909 Snapdragon 210 (28 nm)
    Ace2:
    Qualcomm SM8250 Snapdragon 865 (7 nm+)
  • Rear camera layout

    55b Cobalt:
    Single
    Ace2:
    Quad
  • Release year

    55b Cobalt:
    2017
    Ace2:
    2020

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. 55b Cobalt

    Height:
    Unknown
    Width:
    Unknown
    Depth:
    Unknown

    Unavailable dimensions are omitted from the drawing.

  2. 2. Ace2

    Height:
    160 mm
    Width:
    75.4 mm
    Depth:
    8.6 mm

Weight

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

  1. 1. 55b Cobalt

    188 g

    +2 g versus Ace2

  2. 2. Ace2

    186 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. 55b Cobalt

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 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 24.2% more rectangular screen area than 55b Cobalt.

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 55b Cobalt, Ace2, compared at the same storage capacity.
Storage55b CobaltAce2
128 GB Unknown 8 GB RAM
256 GB Unknown 8 / 12 GB RAM Alternative RAM configurations
55b Cobalt: Original memory entry

16/32 GB · 1/2 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. 55b Cobalt

NFC:
See details Super AMOLED
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 GB (dedicated slot)

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. 55b Cobalt

    2600 mAh

  2. 2. Ace2

    4000 mAh

    +1400 mAh versus 55b Cobalt

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. 55b Cobalt2. Ace2

Everyday essentials
Everyday essentials — specifications for 55b Cobalt, Ace2.
Specification55b CobaltAce2
Dimensions (HxWxD)
  • 155 Х 79 Х 0 mm
  • 160 Х 75.4 Х 8.6 mm
Weight
  • 188 g
  • 186 g
Technology
  • IPS LCD
  • AMOLED
Screen size
  • 5.5" 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.
  • 16/32 GB
  • 1/2 GB RAM
  • 128GB 8GB RAM
  • 256GB 8GB RAM
  • 256GB 12GB RAM
Memory card support
  • microSD
  • up to 64 GB (dedicated slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 2600 mAh
  • Removable Li-Ion
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 6.0 (Marshmallow)
  • Android 10.0; ColorOS 7.1
Chipset
  • Qualcomm MSM8909 Snapdragon 210 (28 nm)
  • Qualcomm SM8250 Snapdragon 865 (7 nm+)
NFC
  • Super AMOLED
  • Yes
Headphone jack
  • Yes
  • No
Display
Display — specifications for 55b Cobalt, Ace2.
Specification55b CobaltAce2
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.4 cm2
  • 103.6 cm2
Screen format
  • 16:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 68.1%
  • 85.9%
PPI /points per inch/
  • 267 PPI
  • 402 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for 55b Cobalt, Ace2.
Specification55b CobaltAce2
Rear camera, main
  • 13 MP
  • Single
  • 48 MP
  • Quad
Camera specs
  • 13 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
  • Dual-LED flash
  • HDR
  • panorama
  • HDR
Video
  • 720p@30fps
  • 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

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

Performance — specifications for 55b Cobalt, Ace2.
Specification55b CobaltAce2
Processor CPU
  • Quad-core 1.1 GHz Cortex-A7
  • Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585)
Graphics processor GPU
  • Adreno 304
  • Adreno 650
Antutu 7 score *
  • 17741
Unknown
General specs
General specs — specifications for 55b Cobalt, Ace2.
Specification55b CobaltAce2
Release date
  • 2017
  • January
  • 2020
  • April 13
Colors
  • Gray
  • Aurora Silver
  • Moon Rock Grey
  • Fantasy Purple
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 520 EUR
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • glass back (Gorilla Glass 5)
  • aluminum frame
Communication and Connectivity
Communication and Connectivity — specifications for 55b Cobalt, Ace2.
Specification55b CobaltAce2
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • dual stand-by)
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE 800 / 1800 / 2100 / 2600
  • 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 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac/ax
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • 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
Harmful irradiation
  • SAR EU - 0.98 W/kg (head) 1.76 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for 55b Cobalt, Ace2.
Specification55b CobaltAce2
Radio
  • FM radio
Unknown
Others Unknown
  • 500 nits typ. brightness (advertised) -HDR10+ -90Hz refresh rate
Other features
Other features — specifications for 55b Cobalt, Ace2.
Specification55b CobaltAce2
Dop
  • Sensors Fingerprint (rear-mounted)
  • 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