Micromax A87 Ninja 4.0 vs O2 XDA Atom Exec

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

    XDA Atom Exec: 6 mm narrower

    A87 Ninja 4.0:
    64 mm
    XDA Atom Exec:
    58 mm
  • Screen diagonal

    XDA Atom Exec: 1.3 in smaller diagonal

    A87 Ninja 4.0:
    4 in
    XDA Atom Exec:
    2.7 in
  • Depth

    A87 Ninja 4.0: 6.8 mm thinner

    A87 Ninja 4.0:
    11.7 mm
    XDA Atom Exec:
    18.5 mm
  • Height

    XDA Atom Exec: 22.8 mm shorter

    A87 Ninja 4.0:
    124.8 mm
    XDA Atom Exec:
    102 mm
  • Release year

    A87 Ninja 4.0:
    2012
    XDA Atom Exec:
    2006

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. A87 Ninja 4.0

    Height:
    124.8 mm +22.8 mm versus XDA Atom Exec
    Width:
    64 mm +6 mm versus XDA Atom Exec
    Depth:
    11.7 mm
    Weight:
    Unknown
  2. 2. XDA Atom Exec

    Height:
    102 mm
    Width:
    58 mm
    Depth:
    18.5 mm +6.8 mm versus A87 Ninja 4.0
    Weight:
    140 g

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. A87 Ninja 4.0

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²
  2. 2. XDA Atom Exec

    Screen diagonal:
    2.7 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    22.6 cm²

A87 Ninja 4.0 has approximately 101.7% more rectangular screen area than XDA Atom Exec.

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.

A87 Ninja 4.0: Original memory entry

130 MB · 256 MB RAM

XDA Atom Exec: Original memory entry

64 MB RAM · 192 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. A87 Ninja 4.0

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

2. XDA Atom Exec

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details miniSD

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. A87 Ninja 4.0

    1400 mAh

  2. 2. XDA Atom Exec

    1530 mAh

    +130 mAh versus A87 Ninja 4.0

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. A87 Ninja 4.02. XDA Atom Exec

Everyday essentials
Everyday essentials — specifications for A87 Ninja 4.0, XDA Atom Exec.
SpecificationA87 Ninja 4.0XDA Atom Exec
Dimensions (HxWxD)
  • 124.8 Х 64 Х 11.7 mm
  • 102 Х 58 Х 18.5 mm
Weight
  • 0 g
  • 140 g
Technology
  • TFT
  • TFT
Screen size
  • 4" inch
  • 2.7" inch
Screen resolution
  • 480 x 800 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 130 MB
  • 256 MB RAM
  • 64 MB RAM
  • 192 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • miniSD
Battery Capacity is not battery life. No endurance test is implied.
  • 1400 mAh
  • Removable Li-Ion
  • 1530 mAh
  • Removable Li-Po
Operating system OS
  • Android 2.3.5 (Gingerbread)
  • Microsoft Windows Mobile 5.0 PocketPC
Headphone jack
  • Yes
  • No
Display
Display — specifications for A87 Ninja 4.0, XDA Atom Exec.
SpecificationA87 Ninja 4.0XDA Atom Exec
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 256K
Unknown
Screen area
  • 45.5 cm2
  • 22.6 cm2
Screen format
  • 5:3 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 57.0%
  • 38.2%
PPI /points per inch/
  • 233 PPI
  • 148 PPI
Camera and Video
Camera and Video — specifications for A87 Ninja 4.0, XDA Atom Exec.
SpecificationA87 Ninja 4.0XDA Atom Exec
Rear camera, main
  • 2 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 2 MP
  • 2 MP
Functions Unknown
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 0 MP,
  • 0 MP,
Performance
Performance — specifications for A87 Ninja 4.0, XDA Atom Exec.
SpecificationA87 Ninja 4.0XDA Atom Exec
Processor CPU
  • 1.0 GHz
  • Intel XScale PXA 27x 520MHz
General specs
General specs — specifications for A87 Ninja 4.0, XDA Atom Exec.
SpecificationA87 Ninja 4.0XDA Atom Exec
Release date
  • 2012
  • September
  • 2006
  • June
Colors
  • Black
  • Silver
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 90 EUR
  • 310 EUR
Battery life
  • Stand by time- Up to 175 h Talking time- Up to 5 h
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for A87 Ninja 4.0, XDA Atom Exec.
SpecificationA87 Ninja 4.0XDA Atom Exec
SIM card
  • Dual SIM (Mini-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Unknown
Speed
  • HSPA 7.2/5.76 Mbps
Unknown
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11b
GPS
  • Yes
  • No
USB
  • microUSB 2.0
  • miniUSB
Bluetooth
  • 2.1
  • 1.2
Harmful irradiation
  • SAR - 0.66 W/kg (head) 1.24 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for A87 Ninja 4.0, XDA Atom Exec.
SpecificationA87 Ninja 4.0XDA Atom Exec
Radio
  • FM radio
  • FM radio
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for A87 Ninja 4.0, XDA Atom Exec.
SpecificationA87 Ninja 4.0XDA Atom Exec
Dop
  • Sensors Accelerometer
  • proximity - MP3/AAC/WMA/WAV player -MP4/WMV/H.264 player -Document viewer -Photo viewer/editor
  • Infrared port - Pocket Office -MP3/AAC/AAC+/WMA/OGG/AMR player -WMV/MP4 player