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BLU Studio X vs Karbonn A4

Compare recorded specifications, size and practical differences.

Karbonn A4

Karbonn A4

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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

    A4: 79 g lighter

    Studio X:
    154 g
    A4:
    75 g
  • Width

    A4: 6 mm narrower

    Studio X:
    72 mm
    A4:
    66 mm
  • Screen diagonal

    A4: 1 in smaller diagonal

    Studio X:
    5 in
    A4:
    4 in
  • Depth

    A4: 1 mm thinner

    Studio X:
    10.5 mm
    A4:
    9.5 mm
  • Height

    A4: 19.2 mm shorter

    Studio X:
    144 mm
    A4:
    124.8 mm
  • Release year

    Studio X:
    2015
    A4:
    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. Studio X

    Height:
    144 mm +19.2 mm versus A4
    Width:
    72 mm +6 mm versus A4
    Depth:
    10.5 mm +1 mm versus A4
  2. 2. A4

    Height:
    124.8 mm
    Width:
    66 mm
    Depth:
    9.5 mm

Weight

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

  1. 1. Studio X

    154 g

    +79 g versus A4

  2. 2. A4

    75 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. Studio X

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²
  2. 2. A4

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    47.6 cm²

Studio X has approximately 44.7% more rectangular screen area than A4.

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 Studio X, A4, compared at the same storage capacity.
StorageStudio XA4
8 GB 1 GB RAM Unknown
A4: Original memory entry

256 MB · 512 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. Studio X

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 GB

2. A4

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. Studio X

    2100 mAh

    +700 mAh versus A4

  2. 2. A4

    1400 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. Studio X2. A4

Everyday essentials
Everyday essentials — specifications for Studio X, A4.
SpecificationStudio XA4
Dimensions (HxWxD)
  • 144 Х 72 Х 10.5 mm
  • 124.8 Х 66 Х 9.5 mm
Weight
  • 154 g
  • 75 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5" inch
  • 4" inch
Screen resolution
  • 720 x 1280 px
  • 320 x 480 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 1 GB RAM
  • 256 MB
  • 512 MB
Memory card support
  • microSD
  • up to 64 GB
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2100 mAh
  • Removable Li-Ion
  • 1400 mAh
  • Li-Ion
Operating system OS
  • Android 4.4.2 (KitKat)
  • upgradable to 5.0 (Lollipop)
  • Android 2.3.6 (Gingerbread)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Studio X, A4.
SpecificationStudio XA4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 256K
Screen area
  • 68.9 cm2
  • 47.6 cm2
Screen format
  • 16:9 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 66.5%
  • 57.8%
PPI /points per inch/
  • 294 PPI
  • 144 PPI
Camera and Video
Camera and Video — specifications for Studio X, A4.
SpecificationStudio XA4
Rear camera, main
  • 8 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 3.15 MP
Functions
  • LED flash
Unknown
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 2 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 2 MP
Unknown
Performance
Performance — specifications for Studio X, A4.
SpecificationStudio XA4
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
Unknown
Graphics processor GPU
  • Mali-400
Unknown
General specs
General specs — specifications for Studio X, A4.
SpecificationStudio XA4
Release date
  • 2015
  • January
  • 2013
  • March
Colors
  • Black
  • White
  • Blue
  • Gold
  • Pink
  • white/black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 120 EUR
  • 70 EUR
Battery life
  • Stand by time- Up to 750 h (2G) / Up to 700 h (3G) Talking time- Up to 25 h (2G) / Up to 12 h (3G)
  • Stand by time- Up to 250 h Talking time- Up to 4 h 20 min
Communication and Connectivity
Communication and Connectivity — specifications for Studio X, A4.
SpecificationStudio XA4
SIM card
  • Dual SIM (Mini-SIM/ Micro-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 850 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 - SIM 1 & SIM 2
Speed
  • HSPA 21.1/5.76 Mbps
  • HSPA
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
  • hotspot
GPS
  • Yes
  • with A-GPS
  • No
USB
  • microUSB 2.0
  • Proprietary
Bluetooth
  • 4.0
  • A2DP
  • Yes
Music and Audio
Music and Audio — specifications for Studio X, A4.
SpecificationStudio XA4
Radio
  • Stereo FM radio
  • FM radio
Other features
Other features — specifications for Studio X, A4.
SpecificationStudio XA4
Dop
  • Sensors Accelerometer
  • gyro
  • proximity
  • Sensors Accelerometer