Micromax A28 Bolt vs ZTE Grand S Flex

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: 41 g lighter

    A28 Bolt:
    89 g
    Grand S Flex:
    130 g
  • Width

    A28 Bolt: 7.5 mm narrower

    A28 Bolt:
    62.5 mm
    Grand S Flex:
    70 mm
  • Screen diagonal

    A28 Bolt: 1.5 in smaller diagonal

    A28 Bolt:
    3.5 in
    Grand S Flex:
    5 in
  • Depth

    Grand S Flex: 3.6 mm thinner

    A28 Bolt:
    12.5 mm
    Grand S Flex:
    8.9 mm
  • Height

    A28 Bolt: 26.1 mm shorter

    A28 Bolt:
    116.9 mm
    Grand S Flex:
    143 mm
  • Release year

    A28 Bolt:
    2014
    Grand S Flex:
    2013

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 +3.6 mm versus Grand S Flex
  2. 2. Grand S Flex

    Height:
    143 mm +26.1 mm versus A28 Bolt
    Width:
    70 mm +7.5 mm versus A28 Bolt
    Depth:
    8.9 mm

Weight

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

  1. 1. A28 Bolt

    89 g

  2. 2. Grand S Flex

    130 g

    +41 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. Grand S Flex

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

Grand S Flex has approximately 88.9% more rectangular screen area than A28 Bolt.

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 A28 Bolt, Grand S Flex, compared at the same storage capacity.
StorageA28 BoltGrand S Flex
16 GB Unknown 1 GB RAM
A28 Bolt: 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. A28 Bolt

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

2. Grand S Flex

NFC:
Unknown
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. A28 Bolt

    1500 mAh

  2. 2. Grand S Flex

    2300 mAh

    +800 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. Grand S Flex

Everyday essentials
Everyday essentials — specifications for A28 Bolt, Grand S Flex.
SpecificationA28 BoltGrand S Flex
Dimensions (HxWxD)
  • 116.9 Х 62.5 Х 12.5 mm
  • 143 Х 70 Х 8.9 mm
Weight
  • 89 g
  • 130 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 3.5" inch
  • 5" inch
Screen resolution
  • 320 x 480 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB
  • 256 MB RAM
  • 16 GB
  • 1 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
  • 2300 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 2.3 (Gingerbread)
  • Android 4.1 (Jelly Bean)
Chipset Unknown
  • Qualcomm MSM8930 Snapdragon 400 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A28 Bolt, Grand S Flex.
SpecificationA28 BoltGrand S Flex
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 36.5 cm2
  • 68.9 cm2
Screen format
  • 3:2 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 49.9%
  • 68.9%
PPI /points per inch/
  • 165 PPI
  • 294 PPI
Camera and Video
Camera and Video — specifications for A28 Bolt, Grand S Flex.
SpecificationA28 BoltGrand S Flex
Rear camera, main
  • 0.3 MP
  • Single
  • 8 MP
  • Single
Camera specs Unknown
  • 8 MP
  • AF
Functions Unknown
  • LED flash
Video
  • 320p
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 1 MP
  • Single
Specifications
  • VGA
  • 1 MP
Performance

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

Performance — specifications for A28 Bolt, Grand S Flex.
SpecificationA28 BoltGrand S Flex
Processor CPU
  • 1.0 GHz Cortex-A5
  • Dual-core 1.2 GHz Krait 200
Graphics processor GPU
  • Mali-300
  • Adreno 305
Antutu 7 score * Unknown
  • 15886
General specs
General specs — specifications for A28 Bolt, Grand S Flex.
SpecificationA28 BoltGrand S Flex
Release date
  • 2014
  • 2013
  • November
Colors
  • Black
  • Black/Silver
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 40 EUR
  • 310 EUR
Battery life
  • Stand by time- Up to 260 h Talking time- Up to 4 h
  • Stand by time- Up to 250 h Talking time- Up to 3 h
Communication and Connectivity
Communication and Connectivity — specifications for A28 Bolt, Grand S Flex.
SpecificationA28 BoltGrand S Flex
SIM card
  • Dual SIM (Mini-SIM)
  • Yes
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA -4G - LTE
Speed Unknown
  • HSPA
GPRS
  • Class 12
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 b/g/n
  • DLNA
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
USB
  • microUSB
  • microUSB 2.0
Bluetooth
  • 2.1
  • A2DP
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for A28 Bolt, Grand S Flex.
SpecificationA28 BoltGrand S Flex
Radio
  • FM radio
  • recording
  • FM radio
Other features
Other features — specifications for A28 Bolt, Grand S Flex.
SpecificationA28 BoltGrand S Flex
Dop Unknown
  • Sensors Accelerometer
  • proximity