Allview V2 Viper S 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: 43.6 g lighter

    V2 Viper S:
    141.6 g
    A66:
    98 g
  • Width

    A66: 7.3 mm narrower

    V2 Viper S:
    74.5 mm
    A66:
    67.2 mm
  • Screen diagonal

    A66: 1 in smaller diagonal

    V2 Viper S:
    5.5 in
    A66:
    4.5 in
  • Depth

    V2 Viper S: 2.8 mm thinner

    V2 Viper S:
    8.2 mm
    A66:
    11 mm
  • Height

    A66: 10 mm shorter

    V2 Viper S:
    146 mm
    A66:
    136 mm
  • Release year

    V2 Viper S:
    2016
    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. V2 Viper S

    Height:
    146 mm +10 mm versus A66
    Width:
    74.5 mm +7.3 mm versus A66
    Depth:
    8.2 mm
  2. 2. A66

    Height:
    136 mm
    Width:
    67.2 mm
    Depth:
    11 mm +2.8 mm versus V2 Viper S

Weight

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

  1. 1. V2 Viper S

    141.6 g

    +43.6 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. V2 Viper S

    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

V2 Viper S 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.

Recorded RAM for V2 Viper S, A66, compared at the same storage capacity.
StorageV2 Viper SA66
32 GB 3 GB RAM Unknown
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. V2 Viper S

NFC:
See details Super AMOLED
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 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. V2 Viper S

    3000 mAh

    +1000 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. V2 Viper S2. A66

Everyday essentials
Everyday essentials — specifications for V2 Viper S, A66.
SpecificationV2 Viper SA66
Dimensions (HxWxD)
  • 146 Х 74.5 Х 8.2 mm
  • 136 Х 67.2 Х 11 mm
Weight
  • 141.6 g
  • 98 g
Technology
  • LTPS 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.
  • 32 GB
  • 3 GB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 256 GB
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Removable Li-Po
  • 2000 mAh
  • Li-Ion
Operating system OS
  • Android 6.0 (Marshmallow)
  • Android 4.1.2 (Jelly Bean)
Chipset
  • Mediatek MT6753 (28 nm)
Unknown
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for V2 Viper S, A66.
SpecificationV2 Viper SA66
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
  • 76.7%
  • 61.1%
PPI /points per inch/
  • 401 PPI
  • 218 PPI
Screen protection
  • Scratch-resistant glass
Unknown
Camera and Video
Camera and Video — specifications for V2 Viper S, A66.
SpecificationV2 Viper SA66
Rear camera, main
  • 16 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 16 MP
  • PDAF & laser AF
  • f/2.0
  • 3.15 MP
Functions
  • Dual-LED flash
  • HDR
  • LED flash
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 5 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 5 MP
  • VGA
Performance
Performance — specifications for V2 Viper S, A66.
SpecificationV2 Viper SA66
Processor CPU
  • Octa-core 1.3 GHz Cortex-A53
  • Dual-core 1.2 GHz
Graphics processor GPU
  • Mali-T720MP2
Unknown
General specs
General specs — specifications for V2 Viper S, A66.
SpecificationV2 Viper SA66
Release date
  • 2016
  • October
  • 2014
Colors
  • Gray
  • Gold
  • White
  • Black
Battery life
  • Stand by time- Up to 210 h (3G) Talking time- Up to 14 h (3G)
  • Stand by time- Up to 160 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity — specifications for V2 Viper S, A66.
SpecificationV2 Viper SA66
SIM card
  • Single SIM (Micro-SIM)Dual SIM (Micro-SIM
  • dual stand-by)
  • Dual SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 20(800)
  • 38(2600)
Unknown
Speed
  • HSPA 21.1/5.76 Mbps
  • LTE Cat4 150/50 Mbps
Unknown
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
USB
  • microUSB 2.0
  • microUSB
Bluetooth
  • 4.0
  • A2DP
  • EDR
  • 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 V2 Viper S, A66.
SpecificationV2 Viper SA66
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for V2 Viper S, A66.
SpecificationV2 Viper SA66
Dop
  • Sensors Accelerometer
  • proximity
  • compass - Acer Liquid Zest Z525 with 3G Acer Liquid Zest 4G Z528 with 3G/LTE
  • Infrared port - Fast battery charging (Pump Express 2.0+) - For metroPCS
  • Sensors Accelerometer
  • proximity