Archos 55b Cobalt vs BLU Vivo XI

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.

  • Screen diagonal

    55b Cobalt: 0.4 in smaller diagonal

    55b Cobalt:
    5.5 in
    Vivo XI:
    5.9 in
  • Chipset

    55b Cobalt:
    Qualcomm MSM8909 Snapdragon 210 (28 nm)
    Vivo XI:
    Mediatek MT6762 Helio P22 (12 nm)
  • Rear camera layout

    55b Cobalt:
    Single
    Vivo XI:
    Dual
  • Release year

    55b Cobalt:
    2017
    Vivo XI:
    2018

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. Vivo XI

    Height:
    149 mm
    Width:
    72.9 mm
    Depth:
    7.9 mm

Weight

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

  1. 1. 55b Cobalt

    188 g

    +1 g versus Vivo XI

  2. 2. Vivo XI

    187 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. Vivo XI

    Screen diagonal:
    5.9 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    86.9 cm²

Vivo XI has approximately 4.2% 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, Vivo XI, compared at the same storage capacity.
Storage55b CobaltVivo XI
32 GB Unknown 3 GB RAM
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. Vivo XI

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 128 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. 55b Cobalt

    2600 mAh

  2. 2. Vivo XI

    3000 mAh

    +400 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. Vivo XI

Everyday essentials
Everyday essentials — specifications for 55b Cobalt, Vivo XI.
Specification55b CobaltVivo XI
Dimensions (HxWxD)
  • 155 Х 79 Х 0 mm
  • 149 Х 72.9 Х 7.9 mm
Weight
  • 188 g
  • 187 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.5" inch
  • 5.9" inch
Screen resolution
  • 720 x 1280 px
  • 720 x 1520 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
  • 32 GB
  • 3 GB RAM
Memory card support
  • microSD
  • up to 64 GB (dedicated slot)
  • microSD
  • up to 128 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 2600 mAh
  • Removable Li-Ion
  • 3000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 6.0 (Marshmallow)
  • Android 8.1 (Oreo)
  • planned upgrade to Android 9.0 (Pie)
Chipset
  • Qualcomm MSM8909 Snapdragon 210 (28 nm)
  • Mediatek MT6762 Helio P22 (12 nm)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for 55b Cobalt, Vivo XI.
Specification55b CobaltVivo XI
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.4 cm2
  • 86.9 cm2
Screen format
  • 16:9 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 68.1%
  • 80.0%
PPI /points per inch/
  • 267 PPI
  • 285 PPI
Camera and Video
Camera and Video — specifications for 55b Cobalt, Vivo XI.
Specification55b CobaltVivo XI
Rear camera, main
  • 13 MP
  • Single
  • 16 MP
  • Dual
Camera specs
  • 13 MP
  • AF
  • 16 MP
  • f/2.0
  • 1/3''
  • 1.10µm
  • PDAF -5 MP
  • 1/5''
  • 1.12µm
  • depth sensor
Functions
  • Dual-LED flash
  • HDR
  • panorama
  • LED flash
Video
  • 720p@30fps
  • 720p@30fps
Front camera, selfie
  • 2 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 2 MP
  • 16 MP
  • 1/3''
  • 1.10µm
Performance

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

Performance — specifications for 55b Cobalt, Vivo XI.
Specification55b CobaltVivo XI
Processor CPU
  • Quad-core 1.1 GHz Cortex-A7
  • Octa-core 2.0 GHz Cortex-A53
Graphics processor GPU
  • Adreno 304
  • PowerVR GE8320
Antutu 7 score *
  • 17741
  • 70125
GeekBench 4 Single Core * Unknown
  • 775
GeekBench 4 Multi-Core * Unknown
  • 3431
General specs
General specs — specifications for 55b Cobalt, Vivo XI.
Specification55b CobaltVivo XI
Release date
  • 2017
  • January
  • 2018
  • September
Colors
  • Gray
  • Black
  • Silver
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 200 USD
Battery life Unknown
  • Stand by time- Up to 625 h (3G) Talking time- Up to 21 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for 55b Cobalt, Vivo XI.
Specification55b CobaltVivo XI
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • dual stand-by)
  • Dual SIM (Micro-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 2 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 12(700)
  • 13(700)
  • 17(700)
  • 28(700)
  • 66(1700/2100)
Speed
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
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
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • 4.1
  • A2DP
  • LE
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, Vivo XI.
Specification55b CobaltVivo XI
Radio
  • FM radio
  • FM radio
Others Unknown
  • DTS sound
Other features
Other features — specifications for 55b Cobalt, Vivo XI.
Specification55b CobaltVivo XI
Dop
  • Sensors Fingerprint (rear-mounted)
  • Sensors Accelerometer
  • proximity
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - For USA