BLU Vivo 8 vs Celkon A66

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

    A66: 82 g lighter

    Vivo 8:
    180 g
    A66:
    98 g
  • Width

    A66: 9.3 mm narrower

    Vivo 8:
    76.5 mm
    A66:
    67.2 mm
  • Screen diagonal

    A66: 1 in smaller diagonal

    Vivo 8:
    5.5 in
    A66:
    4.5 in
  • Depth

    Vivo 8: 2.7 mm thinner

    Vivo 8:
    8.3 mm
    A66:
    11 mm
  • Height

    A66: 18.5 mm shorter

    Vivo 8:
    154.5 mm
    A66:
    136 mm
  • Release year

    Vivo 8:
    2017
    A66:
    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. Vivo 8

    Height:
    154.5 mm +18.5 mm versus A66
    Width:
    76.5 mm +9.3 mm versus A66
    Depth:
    8.3 mm
  2. 2. A66

    Height:
    136 mm
    Width:
    67.2 mm
    Depth:
    11 mm +2.7 mm versus Vivo 8

Weight

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

  1. 1. Vivo 8

    180 g

    +82 g versus A66

  2. 2. A66

    98 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. Vivo 8

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²
  2. 2. A66

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

Vivo 8 has approximately 49.4% more rectangular screen area than A66.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Vivo 8: Original memory entry

64 GB · 512GB 4GB

A66: Original memory entry

4 GB · 512 MB 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. Vivo 8

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 GB

2. A66

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 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. Vivo 8

    4010 mAh

    +2010 mAh versus A66

  2. 2. A66

    2000 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. Vivo 82. A66

Everyday essentials
Everyday essentials — specifications for Vivo 8, A66.
SpecificationVivo 8A66
Dimensions (HxWxD)
  • 154.5 Х 76.5 Х 8.3 mm
  • 136 Х 67.2 Х 11 mm
Weight
  • 180 g
  • 98 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.5" inch
  • 4.5" inch
Screen resolution
  • 1080 x 1920 px
  • 480 x 854 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 GB
  • 512GB 4GB
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 64 GB
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 4010 mAh
  • Non-removable Li-Po
  • 2000 mAh
  • Li-Ion
Operating system OS
  • Android 7.0 (Nougat)
  • Android 4.1.2 (Jelly Bean)
Chipset
  • Mediatek MT6755 Helio P10 (28 nm)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Vivo 8, A66.
SpecificationVivo 8A66
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
Unknown
Screen area
  • 83.4 cm2
  • 55.8 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 70.6%
  • 61.1%
PPI /points per inch/
  • 401 PPI
  • 218 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Vivo 8, A66.
SpecificationVivo 8A66
Rear camera, main
  • 13 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 13 MP
  • f/2.0
  • 1/3''
  • 1.12µm
  • PDAF
  • 3.15 MP
Functions
  • LED flash
  • LED flash
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 16 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 16 MP
  • VGA
Performance

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

Performance — specifications for Vivo 8, A66.
SpecificationVivo 8A66
Processor CPU
  • Octa-core (4x2.0 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
  • Dual-core 1.2 GHz
Graphics processor GPU
  • Mali-T860MP2
Unknown
Antutu 7 score *
  • 53268
Unknown
GeekBench 4 Single Core *
  • 733
Unknown
GeekBench 4 Multi-Core *
  • 2928
Unknown
General specs
General specs — specifications for Vivo 8, A66.
SpecificationVivo 8A66
Release date
  • 2017
  • August
  • 2014
Colors
  • Black
  • Gold
  • White
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 300 USD
Unknown
Battery life
  • Stand by time- Up to 750 h (2G) / Up to 700 h (3G) Talking time- Up to 28 h (2G) / Up to 22 h (3G)
  • Stand by time- Up to 160 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity — specifications for Vivo 8, A66.
SpecificationVivo 8A66
SIM card
  • Dual SIM (Micro-SIM/Nano-SIM
  • dual stand-by)
  • Dual SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE band 2(1900)
  • 4(1700/2100)
  • 7(2600)
  • 12(700)
  • 17(700) LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 5(850)
  • 28(700)
Unknown
Speed
  • HSPA 42.2/11.5 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
Unknown
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n/ac
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
USB
  • microUSB 2.0
  • USB Host
  • microUSB
Bluetooth
  • 4.0
  • A2DP
  • 2.0
Harmful irradiation Unknown
  • SAR EU - 0.38 W/kg (head) 0.47 W/kg (body)
Music and Audio
Music and Audio — specifications for Vivo 8, A66.
SpecificationVivo 8A66
Radio
  • FM radio
  • FM radio
Others
  • Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for Vivo 8, A66.
SpecificationVivo 8A66
Dop
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging
  • Sensors Accelerometer
  • proximity