Micromax Bolt A066 vs verykool s4009 Crystal

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.

  • Screen diagonal

    Bolt A066: 0.5 in smaller diagonal

    Bolt A066:
    3.5 in
    s4009 Crystal:
    4 in
  • Chipset

    Bolt A066:
    Mediatek MT6571 (28 nm)
    s4009 Crystal:
    Mediatek MT6570 (28 nm)
  • Release year

    Bolt A066:
    2014
    s4009 Crystal:
    2017

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. Bolt A066

    Height:
    Unknown
    Width:
    Unknown
    Depth:
    Unknown
    Weight:
    Unknown

    Unavailable dimensions are omitted from the drawing.

  2. 2. s4009 Crystal

    Height:
    127 mm
    Width:
    66 mm
    Depth:
    10.7 mm
    Weight:
    Unknown

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. Bolt A066

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    36.5 cm²
  2. 2. s4009 Crystal

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²

s4009 Crystal has approximately 24.8% more rectangular screen area than Bolt A066.

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.

Bolt A066: Original memory entry

4 GB · 512 MB RAM

s4009 Crystal: Original memory entry

8 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. Bolt A066

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

2. s4009 Crystal

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 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. Bolt A066

    1300 mAh

    +100 mAh versus s4009 Crystal

  2. 2. s4009 Crystal

    1200 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. Bolt A0662. s4009 Crystal

Everyday essentials
Everyday essentials — specifications for Bolt A066, s4009 Crystal.
SpecificationBolt A066s4009 Crystal
Dimensions (HxWxD)
  • Х Х mm
  • 127 Х 66 Х 10.7 mm
Weight
  • 0 g
  • 0 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 3.5" inch
  • 4" inch
Screen resolution
  • 320 x 480 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 8 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 64 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 1300 mAh
  • Removable Li-Ion
  • 1200 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.4.2 (KitKat)
  • Android 6.0 (Marshmallow)
Chipset
  • Mediatek MT6571 (28 nm)
  • Mediatek MT6570 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Bolt A066, s4009 Crystal.
SpecificationBolt A066s4009 Crystal
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 36.5 cm2
  • 45.5 cm2
Screen format
  • 3:2 (height:width)
  • 5:3 (height:width)
Screen to body ratio Unknown
  • 54.3%
PPI /points per inch/
  • 165 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for Bolt A066, s4009 Crystal.
SpecificationBolt A066s4009 Crystal
Rear camera, main
  • 2 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 2 MP
  • 5 MP
  • f/2.4
Functions Unknown
  • LED flash
  • panorama
Video
  • 480p
  • 720p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 2 MP
  • Single
Specifications
  • VGA
  • 2 MP
Performance

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

Performance — specifications for Bolt A066, s4009 Crystal.
SpecificationBolt A066s4009 Crystal
Processor CPU
  • Dual-core 1.3 GHz Cortex-A7
  • Dual-core 1.3 GHz Cortex-A7
Graphics processor GPU
  • Mali-400
  • Mali-400
Antutu 7 score * Unknown
  • 10257
General specs
General specs — specifications for Bolt A066, s4009 Crystal.
SpecificationBolt A066s4009 Crystal
Release date
  • 2014
  • May
  • 2017
  • June
Colors
  • Tranquil Green
  • Pristine White
  • Raging Red
  • Smokey Grey
  • Black/Gold
Battery life
  • Stand by time- Up to 160 h Talking time- Up to 6 h
  • Stand by time- Up to 150 h (3G) Talking time- Up to 4 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for Bolt A066, s4009 Crystal.
SpecificationBolt A066s4009 Crystal
SIM card
  • Dual SIM
  • Dual SIM (Mini-SIM/ Micro-SIM
  • dual stand-by)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed Unknown
  • HSPA 21.1/5.76 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • 4.0
  • A2DP
  • LE
Harmful irradiation
  • SAR EU - 0.37 W/kg (head) 0.41 W/kg (body)
  • SAR - 1.13 W/kg (head) 0.81 W/kg (body)
Music and Audio
Music and Audio — specifications for Bolt A066, s4009 Crystal.
SpecificationBolt A066s4009 Crystal
Radio
  • FM radio
  • Stereo FM radio
Other features
Other features — specifications for Bolt A066, s4009 Crystal.
SpecificationBolt A066s4009 Crystal
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer