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HTC J vs Karbonn A4

Compare recorded specifications, size and practical differences.

HTC J

HTC J

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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.

  • WeightA4: 62 g lighterA4: 75 g · J: 137 g
  • Screen diagonalA4: 0.3 in smaller diagonalA4: 4 in · J: 4.3 in
  • HeightA4: 6.7 mm shorterA4: 124.8 mm · J: 131.5 mm
  • Release year2012 / 2013J: 2012 · 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.

Front
J: 131.5 × 66 mm 1 A4: 124.8 × 66 mm 2
Side
J: 131.5 × 9.5 mm 1 A4: 124.8 × 9.5 mm 2
  1. 1. J
    Height
    131.5 mm+6.7 mm versus A4
    Width
    66 mm
    Depth
    9.5 mm
    Weight
    137 g
  2. 2. A4
    Height
    124.8 mm
    Width
    66 mm
    Depth
    9.5 mm
    Weight
    75 g
Weight

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

  1. 1. J137 g

    +62 g versus A4

  2. 2. A475 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.

Screen size
J: 4.3 in, 16:9, About 51 cm² rectangular area 1 A4: 4 in, 3:2, About 47.6 cm² rectangular area 2
  1. 1. J 4.3 in · 16:9 About 51 cm² rectangular area
  2. 2. A4 4 in · 3:2 About 47.6 cm² rectangular area

J has approximately 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 by storage capacity and phone
StorageJA4
16 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. J

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

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 capacity

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

  1. 1. J1810 mAh

    +410 mAh versus A4

  2. 2. A41400 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. J2. A4

Everyday essentials
Everyday essentials
SpecificationJA4
Dimensions (HxWxD)
  • 131.5 Х 66 Х 9.5 mm
  • 124.8 Х 66 Х 9.5 mm
Weight
  • 137 g
  • 75 g
Technology
  • AMOLED
  • TFT
Screen size
  • 4.3" inch
  • 4" inch
Screen resolution
  • 540 x 960 px
  • 320 x 480 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 1 GB RAM
  • 256 MB
  • 512 MB
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
BatteryCapacity is not battery life. No endurance test is implied.
  • 1810 mAh
  • Removable Li-Ion
  • 1400 mAh
  • Li-Ion
Operating system OS
  • Android 4.0.4 (Ice Cream Sandwich); Sense UI 4
  • Android 2.3.6 (Gingerbread)
Headphone jack
  • Yes
  • Yes
Display
Display
SpecificationJA4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 256K
Screen area
  • 51.0 cm2
  • 47.6 cm2
Screen format
  • 16:9 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 58.7%
  • 57.8%
PPI /points per inch/
  • 256 PPI
  • 144 PPI
Camera and Video
Camera and Video
SpecificationJA4
Rear camera, main
  • 8 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 3.15 MP
Functions
  • LED flash
Unknown
Video
  • 720p
  • Yes
Front camera, selfie
  • 1.3 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 1.3 MP
Unknown
Performance
Performance
SpecificationJA4
Processor CPU
  • Dual-core 1.5 GHz
Unknown
General specs
General specs
SpecificationJA4
Release date
  • 2012
  • April
  • 2013
  • March
Colors
  • Black
  • White
  • Red
  • white/black
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
  • 220 EUR
  • 70 EUR
Battery life Unknown
  • Stand by time- Up to 250 h Talking time- Up to 4 h 20 min
Communication and Connectivity
Communication and Connectivity
SpecificationJA4
SIM card
  • Mini-SIM
  • Dual SIM (Mini-SIM)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 CDMA 800
  • Show all network frequencies: -2G - GSM 850 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 - SIM 1 & SIM 2
Speed
  • HSPA
  • HSPA
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • DLNA
  • hotspot; WiMAX 802.16 e
  • 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
SpecificationJA4
Radio
  • No
  • FM radio
Others
  • Beats Audio -Active noise cancellation with dedicated mic
Unknown
Other features
Other features
SpecificationJA4
Dop
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - MP3/AAC+/WAV/WMA player -MP4/H.264/WMV player -Organizer -Document viewer -Photo viewer/editor -Voice memo/dial/commands -Predictive text input
  • Sensors Accelerometer