Celkon A66 vs Gigabyte GSmart Guru GX

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: 17 g lighter

    A66:
    98 g
    GSmart Guru GX:
    115 g
  • Width

    A66: 1.8 mm narrower

    A66:
    67.2 mm
    GSmart Guru GX:
    69 mm
  • Screen diagonal

    A66: 0.5 in smaller diagonal

    A66:
    4.5 in
    GSmart Guru GX:
    5 in
  • Depth

    GSmart Guru GX: 4 mm thinner

    A66:
    11 mm
    GSmart Guru GX:
    7 mm
  • Height

    A66: 3 mm shorter

    A66:
    136 mm
    GSmart Guru GX:
    139 mm
  • Release year

    A66:
    2014
    GSmart Guru GX:
    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 +4 mm versus GSmart Guru GX
  2. 2. GSmart Guru GX

    Height:
    139 mm +3 mm versus A66
    Width:
    69 mm +1.8 mm versus A66
    Depth:
    7 mm

Weight

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

  1. 1. A66

    98 g

  2. 2. GSmart Guru GX

    115 g

    +17 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. GSmart Guru GX

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

GSmart Guru GX has approximately 23.5% 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 A66, GSmart Guru GX, compared at the same storage capacity.
StorageA66GSmart Guru GX
32 GB Unknown 2 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. GSmart Guru GX

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

  2. 2. GSmart Guru GX

    2300 mAh

    +300 mAh versus A66

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. GSmart Guru GX

Everyday essentials
Everyday essentials — specifications for A66, GSmart Guru GX.
SpecificationA66GSmart Guru GX
Dimensions (HxWxD)
  • 136 Х 67.2 Х 11 mm
  • 139 Х 69 Х 7 mm
Weight
  • 98 g
  • 115 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 4.5" inch
  • 5" inch
Screen resolution
  • 480 x 854 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 32 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 64 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2000 mAh
  • Li-Ion
  • 2300 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 4.1.2 (Jelly Bean)
  • Android 4.4 (KitKat)
Chipset Unknown
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A66, GSmart Guru GX.
SpecificationA66GSmart Guru GX
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 55.8 cm2
  • 68.9 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 61.1%
  • 71.9%
PPI /points per inch/
  • 218 PPI
  • 441 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for A66, GSmart Guru GX.
SpecificationA66GSmart Guru GX
Rear camera, main
  • 3.15 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 3.15 MP
  • 13 MP
  • AF
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • VGA
  • 5 MP
Performance
Performance — specifications for A66, GSmart Guru GX.
SpecificationA66GSmart Guru GX
Processor CPU
  • Dual-core 1.2 GHz
  • Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
Graphics processor GPU Unknown
  • Adreno 405
General specs
General specs — specifications for A66, GSmart Guru GX.
SpecificationA66GSmart Guru GX
Release date
  • 2014
  • 2015
  • January
Colors
  • White
  • Black
  • Black
Battery life
  • Stand by time- Up to 160 h Talking time- Up to 5 h
  • Stand by time- Up to 200 h Talking time- Up to 14 h
Communication and Connectivity
Communication and Connectivity — specifications for A66, GSmart Guru GX.
SpecificationA66GSmart Guru GX
SIM card
  • Dual SIM
  • Dual SIM (Nano-SIM/ Micro-SIM)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE band 3(1800)
  • 7(2600)
  • 20(800)
Speed Unknown
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
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
  • GLONASS
USB
  • microUSB
  • microUSB 2.0
Bluetooth
  • 2.0
  • 4.0
  • LE
Harmful irradiation
  • SAR EU - 0.38 W/kg (head) 0.47 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for A66, GSmart Guru GX.
SpecificationA66GSmart Guru GX
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for A66, GSmart Guru GX.
SpecificationA66GSmart Guru GX
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass