Micromax A28 Bolt vs Siemens SX45

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

    A28 Bolt: 241 g lighter

    A28 Bolt:
    89 g
    SX45:
    330 g
  • Width

    A28 Bolt: 24.5 mm narrower

    A28 Bolt:
    62.5 mm
    SX45:
    87 mm
  • Depth

    A28 Bolt: 13.5 mm thinner

    A28 Bolt:
    12.5 mm
    SX45:
    26 mm
  • Height

    A28 Bolt: 17.1 mm shorter

    A28 Bolt:
    116.9 mm
    SX45:
    134 mm
  • Release year

    A28 Bolt:
    2014
    SX45:
    2001

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. A28 Bolt

    Height:
    116.9 mm
    Width:
    62.5 mm
    Depth:
    12.5 mm
  2. 2. SX45

    Height:
    134 mm +17.1 mm versus A28 Bolt
    Width:
    87 mm +24.5 mm versus A28 Bolt
    Depth:
    26 mm +13.5 mm versus A28 Bolt

Weight

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

  1. 1. A28 Bolt

    89 g

  2. 2. SX45

    330 g

    +241 g versus A28 Bolt

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. A28 Bolt

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    36.5 cm²
  2. 2. SX45

    SX45: 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.

A28 Bolt: Original memory entry

512 MB · 256 MB RAM

SX45: 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. A28 Bolt

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

2. SX45

NFC:
Unknown
Headphone jack:
No
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. A28 Bolt

    1500 mAh

  2. 2. SX45

    1550 mAh

    +50 mAh versus A28 Bolt

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. A28 Bolt2. SX45

Everyday essentials
Everyday essentials — specifications for A28 Bolt, SX45.
SpecificationA28 BoltSX45
Dimensions (HxWxD)
  • 116.9 Х 62.5 Х 12.5 mm
  • 134 Х 87 Х 26 mm
Weight
  • 89 g
  • 330 g
Technology
  • TFT
  • TFT
Screen size
  • 3.5" inch
  • 0" inch
Screen resolution
  • 320 x 480 px
  • 240 x 320 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)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Removable Li-Ion
  • 1550 mAh
  • Removable Li-Ion
Operating system OS
  • Android 2.3 (Gingerbread)
  • Microsoft Windows CE 3.0 for PocketPC
Headphone jack
  • Yes
  • No
Display
Display — specifications for A28 Bolt, SX45.
SpecificationA28 BoltSX45
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 65K
  • 65K
Screen area
  • 36.5 cm2
Unknown
Screen format
  • 3:2 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 49.9%
Unknown
PPI /points per inch/
  • 165 PPI
  • 0 PPI
Camera and Video
Camera and Video — specifications for A28 Bolt, SX45.
SpecificationA28 BoltSX45
Rear camera, main
  • 0.3 MP
  • Single
  • 0 MP,
Video
  • 320p
Unknown
Front camera, selfie
  • 0.3 MP
  • Single
  • 0 MP,
Specifications
  • VGA
Unknown
Performance
Performance — specifications for A28 Bolt, SX45.
SpecificationA28 BoltSX45
Processor CPU
  • 1.0 GHz Cortex-A5
  • 64-bit NEC VR4122 150 MHz
Graphics processor GPU
  • Mali-300
Unknown
General specs
General specs — specifications for A28 Bolt, SX45.
SpecificationA28 BoltSX45
Release date
  • 2014
  • 2001
Colors
  • Black
Unknown
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 40 EUR
Unknown
Battery life
  • Stand by time- Up to 260 h Talking time- Up to 4 h
  • Stand by time- Up to 150 h Talking time- Up to 2 h
Communication and Connectivity
Communication and Connectivity — specifications for A28 Bolt, SX45.
SpecificationA28 BoltSX45
SIM card
  • Dual SIM (Mini-SIM)
  • Mini-SIM
GPRS
  • Class 12
  • No
Edge
  • Yes
  • No
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • No
GPS
  • No
  • No
USB
  • microUSB
Unknown
Bluetooth
  • 2.1
  • A2DP
  • No
Music and Audio
Music and Audio — specifications for A28 Bolt, SX45.
SpecificationA28 BoltSX45
Radio
  • FM radio
  • recording
  • No
Others Unknown
  • 57.6 mm x 76.8 mm -0.24 mm pixel pitch
Other features
Other features — specifications for A28 Bolt, SX45.
SpecificationA28 BoltSX45
Dop Unknown
  • Infrared port - Full PocketPC functionality -Media player (MP3) - PDA + mobile phone