Micromax A28 Bolt vs T-Mobile Sidekick

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: 39 g lighter

    A28 Bolt:
    89 g
    Sidekick:
    128 g
  • Width

    Sidekick: 4.5 mm narrower

    A28 Bolt:
    62.5 mm
    Sidekick:
    58 mm
  • Screen diagonal

    Sidekick: 0.9 in smaller diagonal

    A28 Bolt:
    3.5 in
    Sidekick:
    2.6 in
  • Depth

    A28 Bolt: 5.5 mm thinner

    A28 Bolt:
    12.5 mm
    Sidekick:
    18 mm
  • Height

    A28 Bolt: 2.1 mm shorter

    A28 Bolt:
    116.9 mm
    Sidekick:
    119 mm
  • Release year

    A28 Bolt:
    2014
    Sidekick:
    2008

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 +4.5 mm versus Sidekick
    Depth:
    12.5 mm
  2. 2. Sidekick

    Height:
    119 mm +2.1 mm versus A28 Bolt
    Width:
    58 mm
    Depth:
    18 mm +5.5 mm versus A28 Bolt

Weight

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

  1. 1. A28 Bolt

    89 g

  2. 2. Sidekick

    128 g

    +39 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.

  1. 1. A28 Bolt

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

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

A28 Bolt has approximately 89.6% more rectangular screen area than Sidekick.

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

Sidekick: Original memory entry

128 MB RAM · 64 MB ROM

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. Sidekick

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD (dedicated slot)

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

    +470 mAh versus Sidekick

  2. 2. Sidekick

    1030 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. A28 Bolt2. Sidekick

Everyday essentials
Everyday essentials — specifications for A28 Bolt, Sidekick.
SpecificationA28 BoltSidekick
Dimensions (HxWxD)
  • 116.9 Х 62.5 Х 12.5 mm
  • 119 Х 58 Х 18 mm
Weight
  • 89 g
  • 128 g
Technology
  • TFT
  • TFT
Screen size
  • 3.5" inch
  • 2.6" inch
Screen resolution
  • 320 x 480 px
  • 240 x 400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB
  • 256 MB RAM
  • 128 MB RAM
  • 64 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Removable Li-Ion
  • 1030 mAh
  • Removable Li-Ion
Operating system OS
  • Android 2.3 (Gingerbread)
  • Danger 4.7
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A28 Bolt, Sidekick.
SpecificationA28 BoltSidekick
Touchscreen
  • capacitive touchscreen
Unknown
Display colors
  • 65K
  • 65K
Screen area
  • 36.5 cm2
  • 19.2 cm2
Screen format
  • 3:2 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 49.9%
  • 27.9%
PPI /points per inch/
  • 165 PPI
  • 179 PPI
Camera and Video
Camera and Video — specifications for A28 Bolt, Sidekick.
SpecificationA28 BoltSidekick
Rear camera, main
  • 0.3 MP
  • Single
  • 1.3 MP
  • Single
Camera specs Unknown
  • 1.3 MP
Video
  • 320p
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 0 MP,
Specifications
  • VGA
Unknown
Performance
Performance — specifications for A28 Bolt, Sidekick.
SpecificationA28 BoltSidekick
Processor CPU
  • 1.0 GHz Cortex-A5
Unknown
Graphics processor GPU
  • Mali-300
Unknown
General specs
General specs — specifications for A28 Bolt, Sidekick.
SpecificationA28 BoltSidekick
Release date
  • 2014
  • 2008
  • July
Colors
  • Black
  • Black
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 216 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity — specifications for A28 Bolt, Sidekick.
SpecificationA28 BoltSidekick
SIM card
  • Dual SIM (Mini-SIM)
  • Mini-SIM
GPRS
  • Class 12
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • No
GPS
  • No
  • No
USB
  • microUSB
  • miniUSB
Bluetooth
  • 2.1
  • A2DP
  • 2.0
  • A2DP
Music and Audio
Music and Audio — specifications for A28 Bolt, Sidekick.
SpecificationA28 BoltSidekick
Radio
  • FM radio
  • recording
  • No
Others Unknown
  • Swivel display
Other features
Other features — specifications for A28 Bolt, Sidekick.
SpecificationA28 BoltSidekick
Dop Unknown
  • MP3/WAV/WMA audio player -MP4 player -Voice memo -Predictive text input