Celkon A66 vs ZTE Obsidian

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: 39.5 g lighter

    A66:
    98 g
    Obsidian:
    137.5 g
  • Width

    A66: 1.4 mm narrower

    A66:
    67.2 mm
    Obsidian:
    68.6 mm
  • Depth

    Obsidian: 0.8 mm thinner

    A66:
    11 mm
    Obsidian:
    10.2 mm
  • Release year

    A66:
    2014
    Obsidian:
    2015

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. A66

    Height:
    136 mm
    Width:
    67.2 mm
    Depth:
    11 mm +0.8 mm versus Obsidian
  2. 2. Obsidian

    Height:
    137.4 mm
    Width:
    68.6 mm +1.4 mm versus A66
    Depth:
    10.2 mm

Weight

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

  1. 1. A66

    98 g

  2. 2. Obsidian

    137.5 g

    +39.5 g versus A66

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. A66

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

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

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 A66, Obsidian, compared at the same storage capacity.
StorageA66Obsidian
4 GB Unknown 1 GB RAM
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. A66

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

2. Obsidian

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

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. A66

    2000 mAh

    +200 mAh versus Obsidian

  2. 2. Obsidian

    1800 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. A662. Obsidian

Everyday essentials
Everyday essentials — specifications for A66, Obsidian.
SpecificationA66Obsidian
Dimensions (HxWxD)
  • 136 Х 67.2 Х 11 mm
  • 137.4 Х 68.6 Х 10.2 mm
Weight
  • 98 g
  • 137.5 g
Technology
  • TFT
  • TFT
Screen size
  • 4.5" inch
  • 4.5" inch
Screen resolution
  • 480 x 854 px
  • 480 x 854 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 4 GB
  • 1 GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2000 mAh
  • Li-Ion
  • 1800 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.1.2 (Jelly Bean)
  • Android 5.1 (Lollipop)
Chipset Unknown
  • Mediatek MT6735M (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A66, Obsidian.
SpecificationA66Obsidian
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 55.8 cm2
  • 55.8 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 61.1%
  • 59.2%
PPI /points per inch/
  • 218 PPI
  • 218 PPI
Camera and Video
Camera and Video — specifications for A66, Obsidian.
SpecificationA66Obsidian
Rear camera, main
  • 3.15 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 3.15 MP
  • 5 MP
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 2 MP
  • Single
Specifications
  • VGA
  • 2 MP
Performance
Performance — specifications for A66, Obsidian.
SpecificationA66Obsidian
Processor CPU
  • Dual-core 1.2 GHz
  • Quad-core 1.0 GHz Cortex-A53
Graphics processor GPU Unknown
  • Mali-T720MP2
General specs
General specs — specifications for A66, Obsidian.
SpecificationA66Obsidian
Release date
  • 2014
  • 2015
  • August
Colors
  • White
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 130 EUR
Battery life
  • Stand by time- Up to 160 h Talking time- Up to 5 h
  • Stand by time- Up to 252 h (3G) Talking time- Up to 6 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for A66, Obsidian.
SpecificationA66Obsidian
SIM card
  • Dual SIM
  • Micro-SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 1700(AWS) / 1900 -4G - LTE band 2(1900)
  • 4(1700/2100)
  • 12(700)
Speed Unknown
  • HSPA 42.2/5.76 Mbps
  • LTE
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
  • Yes
  • with A-GPS
USB
  • microUSB
  • microUSB 2.0
Bluetooth
  • 2.0
  • 4.0
  • A2DP
Harmful irradiation
  • SAR EU - 0.38 W/kg (head) 0.47 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for A66, Obsidian.
SpecificationA66Obsidian
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for A66, Obsidian.
SpecificationA66Obsidian
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer