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Micromax Bolt A51 vs Vertu Aster

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    Bolt A51: 75 g lighter

    Bolt A51:
    118 g
    Aster:
    193 g
  • Width

    Bolt A51: 6.5 mm narrower

    Bolt A51:
    62.5 mm
    Aster:
    69 mm
  • Screen diagonal

    Bolt A51: 1.2 in smaller diagonal

    Bolt A51:
    3.5 in
    Aster:
    4.7 in
  • Depth

    Aster: 1.6 mm thinner

    Bolt A51:
    12.8 mm
    Aster:
    11.2 mm
  • Height

    Bolt A51: 24.9 mm shorter

    Bolt A51:
    118.5 mm
    Aster:
    143.4 mm
  • Release year

    Bolt A51:
    2013
    Aster:
    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. Bolt A51

    Height:
    118.5 mm
    Width:
    62.5 mm
    Depth:
    12.8 mm +1.6 mm versus Aster
  2. 2. Aster

    Height:
    143.4 mm +24.9 mm versus Bolt A51
    Width:
    69 mm +6.5 mm versus Bolt A51
    Depth:
    11.2 mm

Weight

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

  1. 1. Bolt A51

    118 g

  2. 2. Aster

    193 g

    +75 g versus Bolt A51

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 A51

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

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

Aster has approximately 66.9% more rectangular screen area than Bolt A51.

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 Bolt A51, Aster, compared at the same storage capacity.
StorageBolt A51Aster
64 GB Unknown 2 GB RAM
Bolt A51: Original memory entry

512 MB · 256 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 A51

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

2. Aster

NFC:
Yes
Headphone jack:
Yes
Memory card support:
No

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 A51

    1500 mAh

  2. 2. Aster

    2275 mAh

    +775 mAh versus Bolt A51

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 A512. Aster

Everyday essentials
Everyday essentials — specifications for Bolt A51, Aster.
SpecificationBolt A51Aster
Dimensions (HxWxD)
  • 118.5 Х 62.5 Х 12.8 mm
  • 143.4 Х 69 Х 11.2 mm
Weight
  • 118 g
  • 193 g
Technology
  • TFT
  • Sapphire crystal glass
Screen size
  • 3.5" inch
  • 4.7" inch
Screen resolution
  • 320 x 480 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB
  • 256 MB RAM
  • 64 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Removable Li-Ion
  • 2275 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 2.3.7 (Gingerbread)
  • Android 4.4.2 (KitKat)
Chipset Unknown
  • Qualcomm Snapdragon 801 (28 nm)
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Bolt A51, Aster.
SpecificationBolt A51Aster
Touchscreen
  • touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 36.5 cm2
  • 59.9 cm2
Screen format
  • 3:2 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 49.3%
  • 60.5%
PPI /points per inch/
  • 165 PPI
  • 473 PPI
Screen protection Unknown
  • Sapphire crystal glass
  • oleophobic coating
Camera and Video
Camera and Video — specifications for Bolt A51, Aster.
SpecificationBolt A51Aster
Rear camera, main
  • 2 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 2 MP
  • 13 MP
  • Hasselblad certified
  • AF
Functions
  • LED flash
  • Dual-LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 2.1 MP
  • Single
Specifications
  • VGA
  • 2.1 MP
Performance

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

Performance — specifications for Bolt A51, Aster.
SpecificationBolt A51Aster
Processor CPU
  • 832 MHz
  • Quad-core 2.3 GHz Krait 400
Graphics processor GPU Unknown
  • Adreno 330
Antutu 7 score * Unknown
  • 37242
GeekBench 4 Single Core * Unknown
  • 509
GeekBench 4 Multi-Core * Unknown
  • 887
General specs
General specs — specifications for Bolt A51, Aster.
SpecificationBolt A51Aster
Release date
  • 2013
  • April
  • 2014
  • October
Colors
  • Black/Silver
  • Onyx Calf
  • Lagoon Calf
  • Blush Calf
  • Caviar Karung
  • Tangerine Karung
  • Raspberry Ostrich
  • Cognac Ostrich
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 5440 EUR
Battery life
  • Stand by time- Up to 140 h Talking time- Up to 4 h 30 min
  • Stand by time- Up to 380 h (3G) Talking time- Up to 15 h 30 min (3G)
Communication and Connectivity
Communication and Connectivity — specifications for Bolt A51, Aster.
SpecificationBolt A51Aster
SIM card
  • Dual SIM
  • Nano-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 900 / 1700 / 1900 / 2100 -4G - LTE band 1(2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 17(700)
  • 20(800)
  • 25(1900)
Speed
  • HSPA
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Class 12
  • Yes
Edge
  • Class 32
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB
  • microUSB 2.0
  • USB Host
Bluetooth
  • 3.0
  • 4.0
  • A2DP
  • aptX
  • LE
Music and Audio
Music and Audio — specifications for Bolt A51, Aster.
SpecificationBolt A51Aster
Radio
  • FM radio
  • No
Others Unknown
  • Dolby Digital Plus audio enhancement -Active noise cancellation with dedicated mic
Other features
Other features — specifications for Bolt A51, Aster.
SpecificationBolt A51Aster
Dop
  • Sensors Accelerometer
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - Qi wireless charging - Titanium body (forged grade 5) and luxurious calf leather covered rear panel