Micromax Bolt A51 vs Sendo X

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.

  • Width

    X: 13.5 mm narrower

    Bolt A51:
    62.5 mm
    X:
    49 mm
  • Screen diagonal

    X: 1.3 in smaller diagonal

    Bolt A51:
    3.5 in
    X:
    2.2 in
  • Depth

    Bolt A51: 10.2 mm thinner

    Bolt A51:
    12.8 mm
    X:
    23 mm
  • Height

    X: 8.5 mm shorter

    Bolt A51:
    118.5 mm
    X:
    110 mm
  • Release year

    Bolt A51:
    2013
    X:
    2003

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 +8.5 mm versus X
    Width:
    62.5 mm +13.5 mm versus X
    Depth:
    12.8 mm
  2. 2. X

    Height:
    110 mm
    Width:
    49 mm
    Depth:
    23 mm +10.2 mm versus Bolt A51

Weight

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

  1. 1. Bolt A51

    118 g

  2. 2. X

    120 g

    +2 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.

At least two phones need compatible screen dimensions for a drawing.

  1. 1. Bolt A51

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

    X: Screen geometry unavailable or conflicting.

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 A51: Original memory entry

512 MB · 256 MB RAM

X: Original memory entry

32 MB

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. X

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details MMC/SD

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

    +450 mAh versus X

  2. 2. X

    1050 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 A512. X

Everyday essentials
Everyday essentials — specifications for Bolt A51, X.
SpecificationBolt A51X
Dimensions (HxWxD)
  • 118.5 Х 62.5 Х 12.8 mm
  • 110 Х 49 Х 23 mm
Weight
  • 118 g
  • 120 g
Technology
  • TFT
  • TFT
Screen size
  • 3.5" inch
  • 2.2" inch
Screen resolution
  • 320 x 480 px
  • 176 x 220 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB
  • 256 MB RAM
  • 32 MB
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • MMC/SD
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Removable Li-Ion
  • 1050 mAh
  • Removable Li-Po
Operating system OS
  • Android 2.3.7 (Gingerbread)
  • Symbian 6.1
  • Series 60 v1.0 UI
Chipset Unknown
  • TI OMAP 5910
Headphone jack
  • Yes
  • No
Display
Display — specifications for Bolt A51, X.
SpecificationBolt A51X
Touchscreen
  • touchscreen
Unknown
Display colors Unknown
  • 65K
Screen area
  • 36.5 cm2
  • 15.2 cm2
Screen format
  • 3:2 (height:width)
Unknown
Screen to body ratio
  • 49.3%
  • 28.3%
PPI /points per inch/
  • 165 PPI
  • 0 PPI
Camera and Video
Camera and Video — specifications for Bolt A51, X.
SpecificationBolt A51X
Rear camera, main
  • 2 MP
  • Single
  • 0.3 MP
  • Single
Camera specs
  • 2 MP
Unknown
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 0 MP,
Specifications
  • VGA
Unknown
Performance
Performance — specifications for Bolt A51, X.
SpecificationBolt A51X
Processor CPU
  • 832 MHz
  • 120 MHz ARM925T
General specs
General specs — specifications for Bolt A51, X.
SpecificationBolt A51X
Release date
  • 2013
  • April
  • 2003
  • Q4
Colors
  • Black/Silver
Unknown
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
Unknown
Battery life
  • Stand by time- Up to 140 h Talking time- Up to 4 h 30 min
  • Stand by time- Up to 170 h Talking time- Up to 7 h
Communication and Connectivity
Communication and Connectivity — specifications for Bolt A51, X.
SpecificationBolt A51X
SIM card
  • Dual SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Unknown
Speed
  • HSPA
Unknown
GPRS
  • Class 12
  • Class 8
Edge
  • Class 32
  • No
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • No
GPS
  • No
  • No
USB
  • microUSB
  • Proprietary
Bluetooth
  • 3.0
  • 1.1
Music and Audio
Music and Audio — specifications for Bolt A51, X.
SpecificationBolt A51X
Radio
  • FM radio
  • No
Other features
Other features — specifications for Bolt A51, X.
SpecificationBolt A51X
Dop
  • Sensors Accelerometer
  • Infrared port - MP4/MP3 player -Sync ML