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BLU J2 vs Karbonn A15

Compare recorded specifications, size and practical differences.

BLU J2

BLU J2

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Karbonn A15

Karbonn A15

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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.

  • Screen diagonal

    A15: 1 in smaller diagonal

    J2:
    5 in
    A15:
    4 in
  • Release year

    J2:
    2019
    A15:
    2012

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. J2

    Height:
    144 mm
    Width:
    73.1 mm
    Depth:
    10.3 mm
    Weight:
    146 g
  2. 2. A15

    Height:
    Unknown
    Width:
    Unknown
    Depth:
    Unknown
    Weight:
    Unknown

    Unavailable dimensions are omitted from the drawing.

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. J2

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²
  2. 2. A15

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

J2 has approximately 51.3% more rectangular screen area than A15.

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 J2, A15, compared at the same storage capacity.
StorageJ2A15
32 GB 1 GB RAM Unknown
A15: Original memory entry

4 GB (2.5 GB user available) · 512 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. J2

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSDXC

2. A15

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (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. J2

    2000 mAh

    +580 mAh versus A15

  2. 2. A15

    1420 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. J22. A15

Everyday essentials
Everyday essentials — specifications for J2, A15.
SpecificationJ2A15
Dimensions (HxWxD)
  • 144 Х 73.1 Х 10.3 mm
  • Х Х mm
Weight
  • 146 g
  • 0 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5" inch
  • 4" inch
Screen resolution
  • 480 x 854 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32GB 1GB RAM
  • 4 GB (2.5 GB user available)
  • 512 MB RAM
Memory card support
  • microSDXC
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2000 mAh
  • Li-Po
  • 1420 mAh
  • Removable Li-Ion
Operating system OS
  • Android 8.1 Oreo (Go edition)
  • Android 4.0.4 (Ice Cream Sandwich)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for J2, A15.
SpecificationJ2A15
Touchscreen
  • capacitive touchscreen
  • touchscreen
Display colors
  • 16M
Unknown
Screen area
  • 68.9 cm2
  • 45.5 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 65.4%
Unknown
PPI /points per inch/
  • 196 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for J2, A15.
SpecificationJ2A15
Rear camera, main
  • 5 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 5 MP
  • 3.15 MP
Functions
  • LED flash
Unknown
Video
  • 720p@30fps
  • Yes
Front camera, selfie
  • 5 MP
  • Single
  • 0 MP,
Specifications
  • 5 MP
Unknown
Performance
Performance — specifications for J2, A15.
SpecificationJ2A15
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • 1.0 GHz
Graphics processor GPU
  • Mali-400
Unknown
General specs
General specs — specifications for J2, A15.
SpecificationJ2A15
Release date
  • 2019
  • December
  • 2012
Colors
  • Blue
  • Black
  • Brown
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 50 EUR
  • 80 EUR
Battery life Unknown
  • Stand by time- Up to 150 h
Communication and Connectivity
Communication and Connectivity — specifications for J2, A15.
SpecificationJ2A15
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (Mini-SIM)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed
  • HSPA 21.1/5.76 Mbps
  • HSPA 7.2/0.384 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.1
  • A2DP
  • LE
  • 2.0
Harmful irradiation Unknown
  • SAR - 0.59 W/kg (head)
Music and Audio
Music and Audio — specifications for J2, A15.
SpecificationJ2A15
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for J2, A15.
SpecificationJ2A15
Dop
  • Sensors Accelerometer For USA
  • Sensors Accelerometer