Gionee M12 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: 98 g lighter

    M12:
    196 g
    A66:
    98 g
  • Width

    A66: 9.6 mm narrower

    M12:
    76.8 mm
    A66:
    67.2 mm
  • Screen diagonal

    A66: 2.05 in smaller diagonal

    M12:
    6.55 in
    A66:
    4.5 in
  • Rear camera layout

    M12:
    Quad
    A66:
    Single
  • Depth

    M12: 1.7 mm thinner

    M12:
    9.3 mm
    A66:
    11 mm
  • Height

    A66: 27.9 mm shorter

    M12:
    163.9 mm
    A66:
    136 mm

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. M12

    Height:
    163.9 mm +27.9 mm versus A66
    Width:
    76.8 mm +9.6 mm versus A66
    Depth:
    9.3 mm
  2. 2. A66

    Height:
    136 mm
    Width:
    67.2 mm
    Depth:
    11 mm +1.7 mm versus M12

Weight

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

  1. 1. M12

    196 g

    +98 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. M12

    Screen diagonal:
    6.55 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    103.6 cm²
  2. 2. A66

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

M12 has approximately 85.5% 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 M12, A66, compared at the same storage capacity.
StorageM12A66
64 GB 4 GB RAM Unknown
128 GB 6 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. M12

NFC:
No
Headphone jack:
Yes
Memory card support:
See details microSDXC

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. M12

    5100 mAh

    +3100 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. M122. A66

Everyday essentials
Everyday essentials — specifications for M12, A66.
SpecificationM12A66
Dimensions (HxWxD)
  • 163.9 Х 76.8 Х 9.3 mm
  • 136 Х 67.2 Х 11 mm
Weight
  • 196 g
  • 98 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 6.55" inc
  • 4.5" inch
Screen resolution
  • 720 x 1600 px
  • 480 x 854 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64GB 4GB RAM
  • 128GB 6GB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSDXC
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 5100 mAh
  • Li-Po
  • non-removable
  • 2000 mAh
  • Li-Ion
Operating system OS
  • Android 10
  • Android 4.1.2 (Jelly Bean)
Chipset
  • - MediaTek Helio A25 (12 nm) - Mediatek MT6762 Helio P22 (12 nm)
Unknown
NFC
  • No
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for M12, A66.
SpecificationM12A66
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Screen area
  • 103.6 cm2
  • 55.8 cm2
Screen format
  • 20:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 82.3%
  • 61.1%
PPI /points per inch/ Unknown
  • 218 PPI
Camera and Video
Camera and Video — specifications for M12, A66.
SpecificationM12A66
Rear camera, main
  • 48 MP
  • Quad
  • 3.15 MP
  • Single
Camera specs
  • -48 MP
  • f/1.8
  • (wide)
  • PDAF -5 MP
  • f/2.2
  • 115˚
  • (ultrawide) -2 MP (depth) -2 MP (depth)
  • 3.15 MP
Functions
  • LED flash
  • HDR
  • panorama
  • LED flash
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 16 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 16 MP
  • VGA
Performance
Performance — specifications for M12, A66.
SpecificationM12A66
Processor CPU
  • - Octa-core (4x1.8 GHz Cortex-A53 & 4x1.5 GHz Cortex-A53) -Octa-core 2.0 GHz Cortex-A53
  • Dual-core 1.2 GHz
Graphics processor GPU
  • - PowerVR GE8320
Unknown
General specs
General specs — specifications for M12, A66.
SpecificationM12A66
Release date
  • 2020
  • November 16
  • 2014
Colors
  • Magic Green
  • Dazzling Black
  • White
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
Unknown
Battery life Unknown
  • Stand by time- Up to 160 h Talking time- Up to 5 h
Body build
  • Glass front
  • plastic frame
  • plastic back
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for M12, A66.
SpecificationM12A66
SIM card
  • Dual 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 900 / 1900 -4G - 1
  • 2
  • 3
  • 5
  • 7
  • 8
  • 20
  • 28
  • 40
Unknown
Speed
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
Unknown
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
USB
  • USB Type-C 2.0
  • USB On-The-Go
  • microUSB
Bluetooth
  • 5.0
  • 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 M12, A66.
SpecificationM12A66
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for M12, A66.
SpecificationM12A66
Dop
  • - Sensors - Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • Sensors Accelerometer
  • proximity